Fixes for recently merged code:
- a fix for the _PAGE_DEVMAP support, which was breaking KVM on Power9 radix
- avoid a (harmless) lockdep warning in the early SMP code
- return failure for some uses of dma_set_mask() rather than falling back to 32-bits
- fix stack setup in watchdog soft_nmi_common() to use emergency stack
- fix of_irq_to_resource() error check in of_fsl_spi_probe()
Two fixes going to stable:
- fix saving of Transactional Memory SPRs in core dump
- fix __check_irq_replay missing decrementer interrupt
And two misc:
- fix 64-bit boot wrapper build with non-biarch compiler
- work around a POWER9 PMU hang after state-loss idle
Thanks to:
Alistair Popple, Aneesh Kumar K.V, Cyril Bur, Gustavo Romero, Jose Ricardo
Ziviani, Laurent Vivier, Nicholas Piggin, Oliver O'Halloran, Sergei Shtylyov,
Suraj Jitindar Singh, Thomas Gleixner.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
iQIcBAABAgAGBQJZhEH/AAoJEFHr6jzI4aWA8GoP+wdtaBYZIElFMnPay/BY8lSQ
MODF6FlaexdNuVFo5In2BnMAs12bIXDO69wMziqc+uZIA+vI3K7lqsi+8p1R38Ts
FG5OFLzX/gx1ykoeDe0mC8GPUHGVBdMr6+rHzt/9M7PrQWApCoBJLakYIElOrN5B
EiAxunwJQISKNQYYmyVhjMVFq8ydMHSgtR7JVDHTh1AoStaO9M5hoJegD4Dnytaf
F0/0Y5U+NGGWwPIyDrjB4wE9L8NCk0JfvpBhjORMkFSpAOe4VhxZrAGDyaCzVKVh
YkxSirVKuVwEmvV2prmq4SAJi61EMUEPx2WL7hRN3ol/dF+2lU9nl2lyL3yRnGPY
9mtNHur07qoMqyXI8750ayTzbMG75aakJF2be9G+zwNc3Sw8dqJvs2PwpSVdnima
jWmWnRikws4qmEOEBV6nxtWf8qYACHevyK7YzIHDU8SVXLjAkX/u6LZGHAfTQ8Xo
jYcISpiA2ko8YnMR7yy9FZqs4KGqeOotMamgJRGUcSY/9Xn8WDIrtQ4tIuJtGjzW
XFOFafZOzyt6s1dNz01C4hzP60J+/CxPNRxx6zWnbijY6puADu/Mv1g+ai3nYdKA
e/CYt6O8tzooFHCHtVLUPgWA82heDwNtjmlnSikWTdT07KLRhP+0w9Qq8gBzztKT
7B/vPMjCMPQaJrrnj6GX
=Rdy8
-----END PGP SIGNATURE-----
Merge tag 'powerpc-4.13-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
"Fixes for recently merged code:
- a fix for the _PAGE_DEVMAP support, which was breaking KVM on
Power9 radix
- avoid a (harmless) lockdep warning in the early SMP code
- return failure for some uses of dma_set_mask() rather than falling
back to 32-bits
- fix stack setup in watchdog soft_nmi_common() to use emergency
stack
- fix of_irq_to_resource() error check in of_fsl_spi_probe()
Two fixes going to stable:
- fix saving of Transactional Memory SPRs in core dump
- fix __check_irq_replay missing decrementer interrupt
And two misc:
- fix 64-bit boot wrapper build with non-biarch compiler
- work around a POWER9 PMU hang after state-loss idle
Thanks to: Alistair Popple, Aneesh Kumar K.V, Cyril Bur, Gustavo
Romero, Jose Ricardo Ziviani, Laurent Vivier, Nicholas Piggin, Oliver
O'Halloran, Sergei Shtylyov, Suraj Jitindar Singh, Thomas Gleixner"
* tag 'powerpc-4.13-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/64: Fix __check_irq_replay missing decrementer interrupt
powerpc/perf: POWER9 PMU stops after idle workaround
powerpc/83xx/mpc832x_rdb: fix of_irq_to_resource() error check
powerpc/64s: Fix stack setup in watchdog soft_nmi_common()
powerpc/powernv/pci: Return failure for some uses of dma_set_mask()
powerpc/boot: Fix 64-bit boot wrapper build with non-biarch compiler
powerpc/smp: Call smp_ops->setup_cpu() directly on the boot CPU
powerpc/tm: Fix saving of TM SPRs in core dump
powerpc/mm: Fix pmd/pte_devmap() on non-leaf entries
Mikael Pettersson reported that some test programs in the strace-4.18
testsuite cause an OOPS.
After some debugging it turns out that garbage values are returned
when an exception occurs, causing the fixup memset() to be run with
bogus arguments.
The problem is that two of the exception handler stubs write the
successfully copied length into the wrong register.
Fixes: ee841d0aff ("sparc64: Convert U3copy_{from,to}_user to accurate exception reporting.")
Reported-by: Mikael Pettersson <mikpelinux@gmail.com>
Tested-by: Mikael Pettersson <mikpelinux@gmail.com>
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
The bitmask used to define these values produces overflow, as seen by
this compiler warning:
arch/arm64/kernel/head.S:47:8: warning:
integer overflow in preprocessor expression
#elif (PAGE_OFFSET & 0x1fffff) != 0
^~~~~~~~~~~
arch/arm64/include/asm/memory.h:52:46: note:
expanded from macro 'PAGE_OFFSET'
#define PAGE_OFFSET (UL(0xffffffffffffffff) << (VA_BITS -
1))
~~~~~~~~~~~~~~~~~~ ^
It would be preferrable to use GENMASK_ULL() instead, but it's not set
up to be used from assembly (the UL() macro token pastes UL suffixes
when not included in assembly sources).
Suggested-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Suggested-by: Yury Norov <ynorov@caviumnetworks.com>
Suggested-by: Matthias Kaehlcke <mka@chromium.org>
Signed-off-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
In a system with DBM (dirty bit management) capable agents there is a
possible race between a CPU executing ptep_set_access_flags() (maybe
non-DBM capable) and a hardware update of the dirty state (clearing of
PTE_RDONLY). The scenario:
a) the pte is writable (PTE_WRITE set), clean (PTE_RDONLY set) and old
(PTE_AF clear)
b) ptep_set_access_flags() is called as a result of a read access and it
needs to set the pte to writable, clean and young (PTE_AF set)
c) a DBM-capable agent, as a result of a different write access, is
marking the entry as young (setting PTE_AF) and dirty (clearing
PTE_RDONLY)
The current ptep_set_access_flags() implementation would set the
PTE_RDONLY bit in the resulting value overriding the DBM update and
losing the dirty state.
This patch fixes such race by setting PTE_RDONLY to the most permissive
(lowest value) of the current entry and the new one.
Fixes: 66dbd6e61a ("arm64: Implement ptep_set_access_flags() for hardware AF/DBM")
Cc: Will Deacon <will.deacon@arm.com>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Steve Capper <steve.capper@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
They should be used only when an actual
remote-endpoint is connected.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=rgNN
-----END PGP SIGNATURE-----
Merge tag 'davinci-fixes-for-v4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci into fixes
Pull "DaVinci fixes for v4.13" from Sekhar Nori:
Drop unused VPIF endpoints from device-tree.
They should be used only when an actual
remote-endpoint is connected.
* tag 'davinci-fixes-for-v4.13' of git://git.kernel.org/pub/scm/linux/kernel/git/nsekhar/linux-davinci:
ARM: dts: da850-lcdk: drop unused VPIF endpoints
ARM: dts: da850-evm: drop unused VPIF endpoints
Two fixes to correct the EMAC blocks memory region size to match the
datasheet. One that converts raw A83T clock indices to macros from the
clk dt-binding header, completing the A83T sunxi-ng clk driver.
-----BEGIN PGP SIGNATURE-----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=aFvT
-----END PGP SIGNATURE-----
Merge tag 'sunxi-fixes-for-4.13' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux into fixes
Pull "Allwinner fixes for 4.13" from Chen-Yu Tsai:
Two fixes to correct the EMAC blocks memory region size to match the
datasheet. One that converts raw A83T clock indices to macros from the
clk dt-binding header, completing the A83T sunxi-ng clk driver.
* tag 'sunxi-fixes-for-4.13' of https://git.kernel.org/pub/scm/linux/kernel/git/sunxi/linux:
ARM: dts: sun8i: a83t: Switch to CCU device tree binding macros
arm64: allwinner: sun50i-a64: Correct emac register size
ARM: dts: sunxi: h3/h5: Correct emac register size
Fix deadlock in regulator quirk for R-Car Gen 2 SoCs
The da9063/da9210 regulator quirk for R-Car Gen2 boards uses a bus
notifier, and unregisters the notifier when it is no longer needed.
However, a notifier must not be unregistered from within the call chain.
This bug went unnoticed, as blocking_notifier_chain_unregister() didn't
take the semaphore during early boot. This is no longer the case as of
upstream commit 1c3c5eab17 ("sched/core: Enable might_sleep() and
smp_processor_id() checks early") and a deadlock occurs.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=N5ig
-----END PGP SIGNATURE-----
Merge tag 'renesas-fixes3-for-v4.13' of https://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into fixes
Pull "Third Round of Renesas ARM Based SoC Fixes for v4.13" from Simon Horman:
Fix deadlock in regulator quirk for R-Car Gen 2 SoCs
The da9063/da9210 regulator quirk for R-Car Gen2 boards uses a bus
notifier, and unregisters the notifier when it is no longer needed.
However, a notifier must not be unregistered from within the call chain.
This bug went unnoticed, as blocking_notifier_chain_unregister() didn't
take the semaphore during early boot. This is no longer the case as of
upstream commit 1c3c5eab17 ("sched/core: Enable might_sleep() and
smp_processor_id() checks early") and a deadlock occurs.
* tag 'renesas-fixes3-for-v4.13' of https://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
ARM: shmobile: rcar-gen2: Fix deadlock in regulator quirk
All the fixes are for ARM64 mvebu:
- Fix the RTC interrupt on A7K/A8K which was missed when switching
from GIC to ICU
- Mark the A7K/A8K crypto engine as dma coherent
- Fix the number of GPIO on south bridge on Armada 3700
-----BEGIN PGP SIGNATURE-----
iIEEABECAEEWIQQYqXDMF3cvSLY+g9cLBhiOFHI71QUCWYHbmCMcZ3JlZ29yeS5j
bGVtZW50QGZyZWUtZWxlY3Ryb25zLmNvbQAKCRALBhiOFHI71ZhfAJ9Z9aMBG1xd
vbRYBDdqPdntruTudwCcDtM9jS2nL+207JfeMD0WMs7sDdU=
=XwFM
-----END PGP SIGNATURE-----
Merge tag 'mvebu-fixes-4.13-2' of git://git.infradead.org/linux-mvebu into fixes
Pull "mvebu fixes for 4.13 (part 2)" from Gregory CLEMENT:
All the fixes are for ARM64 mvebu:
- Fix the RTC interrupt on A7K/A8K which was missed when switching
from GIC to ICU
- Mark the A7K/A8K crypto engine as dma coherent
- Fix the number of GPIO on south bridge on Armada 3700
* tag 'mvebu-fixes-4.13-2' of git://git.infradead.org/linux-mvebu:
ARM64: dts: marvell: armada-37xx: Fix the number of GPIO on south bridge
arm64: dts: marvell: mark the cp110 crypto engine as dma coherent
arm64: dts: marvell: use ICU for the CP110 slave RTC
- 2 minor DT fixes
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2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=Z5d3
-----END PGP SIGNATURE-----
Merge tag 'amlogic-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-amlogic into fixes
Pull "Amlogic fixes for v4.13-rc" from Kevin Hilman:
- 2 minor DT fixes
* tag 'amlogic-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/khilman/linux-amlogic:
ARM64: dts: meson-gxl-s905x-libretech-cc: fixup board definition
ARM64: dts: meson-gx: use specific compatible for the AO pwms
showed a wrong value, so fix it before it gets copy-pasted
to much.
-----BEGIN PGP SIGNATURE-----
iQFEBAABCAAuFiEE7v+35S2Q1vLNA3Lx86Z5yZzRHYEFAlmEM5wQHGhlaWtvQHNu
dGVjaC5kZQAKCRDzpnnJnNEdgVn+B/9Xy9km3t8cFVQ//SjNm1MEfiyVrgCnH6TH
trLit6AKq19LTIfeyI2RQucEXB0Csw2+YNh4q9Td6utnc0S3OpzueFsfKfAD9xif
WpRR6MJjCSlIQfhd09XuKyWoDwwNmnidv+Xd/H3M83dTOzoPmy0aDkn/shc1I+Tw
gL0CbLPz1HuHuG55S5EkxcBNi/Mj34qI5e3O8hrqzpfzmc1CdQ38zblfkiyu94v7
f/sVUv8p2YHyfvIJ1n1DxQx7lvAxGzo3Q7fXqS9D1jJx4iDWWFaraLMPu3NztLcv
1XrawJTdGZ9vTJSmzcEwH7JeAUHX41wIWjf/jEx9iE2R9EY0lyLo
=B0nU
-----END PGP SIGNATURE-----
Merge tag 'v4.13-rockchip-dts32fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip into fixes
Pull "Rockchip dts32 fixes for 4.13" from Heiko Stübner:
Fix for the recently added mali dt support. The example
showed a wrong value, so fix it before it gets copy-pasted
to much.
* tag 'v4.13-rockchip-dts32fixes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip:
ARM: dts: rockchip: fix mali gpu node on rk3288
dt-bindings: gpu: drop wrong compatible from midgard binding example
If the decrementer wraps again and de-asserts the decrementer
exception while hard-disabled, __check_irq_replay() has a test to
notice the wrap when interrupts are re-enabled.
The decrementer check must be done when clearing the PACA_IRQ_HARD_DIS
flag, not when the PACA_IRQ_DEC flag is tested. Previously this worked
because the decrementer interrupt was always the first one checked
after clearing the hard disable flag, but HMI check was moved ahead of
that, which introduced this bug.
This can cause a missed decrementer interrupt if we soft-disable
interrupts then take an HMI which is recorded in irq_happened, then
hard-disable interrupts for > 4s to wrap the decrementer.
Fixes: e0e0d6b739 ("powerpc/64: Replay hypervisor maintenance interrupt first")
Cc: stable@vger.kernel.org # v4.9+
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
POWER9 DD2 PMU can stop after a state-loss idle in some conditions.
A solution is to set then clear MMCRA[60] after wake from state-loss
idle. MMCRA[60] is a non-architected bit, see the user manual for
details.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Acked-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Reviewed-by: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com>
Acked-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
- Fix the handling of the scaling_cur_freq cpufreq policy attribute
on x86 systems with the MPERF/APERF registers present to make it
behave more as expected after recent changes (Rafael Wysocki).
- Drop a leftover callback from the intel_pstate driver which also
prevents the cpuinfo_cur_freq cpufreq policy attribute from being
incorrectly exposed when intel_pstate works in the active mode
(Rafael Wysocki).
- Add a missing piece describing the cpuinfo_cur_freq policy
attribute to cpufreq documentation (Rafael Wysocki).
- Fix up a recently added part of the Thunderbolt driver to avoid
aborting system suspends if its mailbox commands time out (Rafael
Wysocki).
- Update device runtime PM framework documentation to reflect the
current behavior of the code (Johan Hovold).
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2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=j2UJ
-----END PGP SIGNATURE-----
Merge tag 'pm-4.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"These fix two cpufreq issues, one introduced recently and one related
to recent changes, fix cpufreq documentation, fix up recently added
code in the Thunderbolt driver and update runtime PM framework
documentation.
Specifics:
- Fix the handling of the scaling_cur_freq cpufreq policy attribute
on x86 systems with the MPERF/APERF registers present to make it
behave more as expected after recent changes (Rafael Wysocki).
- Drop a leftover callback from the intel_pstate driver which also
prevents the cpuinfo_cur_freq cpufreq policy attribute from being
incorrectly exposed when intel_pstate works in the active mode
(Rafael Wysocki).
- Add a missing piece describing the cpuinfo_cur_freq policy
attribute to cpufreq documentation (Rafael Wysocki).
- Fix up a recently added part of the Thunderbolt driver to avoid
aborting system suspends if its mailbox commands time out (Rafael
Wysocki).
- Update device runtime PM framework documentation to reflect the
current behavior of the code (Johan Hovold)"
* tag 'pm-4.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
thunderbolt: icm: Ignore mailbox errors in icm_suspend()
cpufreq: x86: Make scaling_cur_freq behave more as expected
PM / runtime: Document new pm_runtime_set_suspended() constraint
cpufreq: docs: Add missing cpuinfo_cur_freq description
cpufreq: intel_pstate: Drop ->get from intel_pstate structure
- Yet another race with VM destruction plugged
- A set of small vgic fixes
-----BEGIN PGP SIGNATURE-----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=TMR9
-----END PGP SIGNATURE-----
Merge tag 'kvm-arm-for-v4.13-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/kvmarm/kvmarm
KVM/ARM Fixes for v4.13-rc4
- Yet another race with VM destruction plugged
- A set of small vgic fixes
------------[ cut here ]------------
WARNING: CPU: 5 PID: 2288 at arch/x86/kvm/vmx.c:11124 nested_vmx_vmexit+0xd64/0xd70 [kvm_intel]
CPU: 5 PID: 2288 Comm: qemu-system-x86 Not tainted 4.13.0-rc2+ #7
RIP: 0010:nested_vmx_vmexit+0xd64/0xd70 [kvm_intel]
Call Trace:
vmx_check_nested_events+0x131/0x1f0 [kvm_intel]
? vmx_check_nested_events+0x131/0x1f0 [kvm_intel]
kvm_arch_vcpu_ioctl_run+0x5dd/0x1be0 [kvm]
? vmx_vcpu_load+0x1be/0x220 [kvm_intel]
? kvm_arch_vcpu_load+0x62/0x230 [kvm]
kvm_vcpu_ioctl+0x340/0x700 [kvm]
? kvm_vcpu_ioctl+0x340/0x700 [kvm]
? __fget+0xfc/0x210
do_vfs_ioctl+0xa4/0x6a0
? __fget+0x11d/0x210
SyS_ioctl+0x79/0x90
do_syscall_64+0x8f/0x750
? trace_hardirqs_on_thunk+0x1a/0x1c
entry_SYSCALL64_slow_path+0x25/0x25
This can be reproduced by booting L1 guest w/ 'noapic' grub parameter, which
means that tells the kernel to not make use of any IOAPICs that may be present
in the system.
Actually external_intr variable in nested_vmx_vmexit() is the req_int_win
variable passed from vcpu_enter_guest() which means that the L0's userspace
requests an irq window. I observed the scenario (!kvm_cpu_has_interrupt(vcpu) &&
L0's userspace reqeusts an irq window) is true, so there is no interrupt which
L1 requires to inject to L2, we should not attempt to emualte "Acknowledge
interrupt on exit" for the irq window requirement in this scenario.
This patch fixes it by not attempt to emulate "Acknowledge interrupt on exit"
if there is no L1 requirement to inject an interrupt to L2.
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com>
[Added code comment to make it obvious that the behavior is not correct.
We should do a userspace exit with open interrupt window instead of the
nested VM exit. This patch still improves the behavior, so it was
accepted as a (temporary) workaround.]
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
The host physical addresses of L1's Virtual APIC Page and Posted
Interrupt descriptor are loaded into the VMCS02. The CPU may write
to these pages via their host physical address while L2 is running,
bypassing address-translation-based dirty tracking (e.g. EPT write
protection). Mark them dirty on every exit from L2 to prevent them
from getting out of sync with dirty tracking.
Also mark the virtual APIC page and the posted interrupt descriptor
dirty when KVM is virtualizing posted interrupt processing.
Signed-off-by: David Matlack <dmatlack@google.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
According to the Intel SDM, software cannot rely on the current VMCS to be
coherent after a VMXOFF or shutdown. So this is a valid way to handle VMCS12
flushes.
24.11.1 Software Use of Virtual-Machine Control Structures
...
If a logical processor leaves VMX operation, any VMCSs active on
that logical processor may be corrupted (see below). To prevent
such corruption of a VMCS that may be used either after a return
to VMX operation or on another logical processor, software should
execute VMCLEAR for that VMCS before executing the VMXOFF instruction
or removing power from the processor (e.g., as part of a transition
to the S3 and S4 power states).
...
This fixes a "suspicious rcu_dereference_check() usage!" warning during
kvm_vm_release() because nested_release_vmcs12() calls
kvm_vcpu_write_guest_page() without holding kvm->srcu.
Signed-off-by: David Matlack <dmatlack@google.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Since the current implementation of VMCS12 does a memcpy in and out
of guest memory, we do not need current_vmcs12 and current_vmcs12_page
anymore. current_vmptr is enough to read and write the VMCS12.
And David Matlack noted:
This patch also fixes dirty tracking (memslot->dirty_bitmap) of the
VMCS12 page by using kvm_write_guest. nested_release_page() only marks
the struct page dirty.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
[Added David Matlack's note and nested_release_page_clean() fix.]
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
'lapic_irq' is a local variable and its 'level' field isn't
initialized, so 'level' is random, it doesn't matter but
makes UBSAN unhappy:
UBSAN: Undefined behaviour in .../lapic.c:...
load of value 10 is not a valid value for type '_Bool'
...
Call Trace:
[<ffffffff81f030b6>] dump_stack+0x1e/0x20
[<ffffffff81f03173>] ubsan_epilogue+0x12/0x55
[<ffffffff81f03b96>] __ubsan_handle_load_invalid_value+0x118/0x162
[<ffffffffa1575173>] kvm_apic_set_irq+0xc3/0xf0 [kvm]
[<ffffffffa1575b20>] kvm_irq_delivery_to_apic_fast+0x450/0x910 [kvm]
[<ffffffffa15858ea>] kvm_irq_delivery_to_apic+0xfa/0x7a0 [kvm]
[<ffffffffa1517f4e>] kvm_emulate_hypercall+0x62e/0x760 [kvm]
[<ffffffffa113141a>] handle_vmcall+0x1a/0x30 [kvm_intel]
[<ffffffffa114e592>] vmx_handle_exit+0x7a2/0x1fa0 [kvm_intel]
...
Signed-off-by: Longpeng(Mike) <longpeng2@huawei.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
When SMP VM start, AP may lost INIT because of receiving INIT between
kvm_vcpu_ioctl_x86_get/set_vcpu_events.
vcpu 0 vcpu 1
kvm_vcpu_ioctl_x86_get_vcpu_events
events->smi.latched_init = 0
send INIT to vcpu1
set vcpu1's pending_events
kvm_vcpu_ioctl_x86_set_vcpu_events
if (events->smi.latched_init == 0)
clear INIT in pending_events
This patch fixes it by just update SMM related flags if we are in SMM.
Thanks Peng Hao for the report and original commit message.
Reported-by: Peng Hao <peng.hao2@zte.com.cn>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
The number of pins in South Bridge is 30 and not 29. There is a fix for
the driver for the pinctrl, but a fix is also need at device tree level
for the GPIO.
Fixes: afda007fed ("ARM64: dts: marvell: Add pinctrl nodes for Armada
3700")
Cc: <stable@vger.kernel.org>
Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com>
of_irq_to_resource() has recently been fixed to return negative error #'s
along with 0 in case of failure, however the Freescale MPC832x RDB board
code still only regards 0 as a failure indication -- fix it up.
Fixes: 7a4228bbff ("of: irq: use of_irq_get() in of_irq_to_resource()")
Signed-off-by: Sergei Shtylyov <sergei.shtylyov@cogentembedded.com>
Acked-by: Scott Wood <oss@buserror.net>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
WARNING: CPU: 5 PID: 1242 at kernel/rcu/tree_plugin.h:323 rcu_note_context_switch+0x207/0x6b0
CPU: 5 PID: 1242 Comm: unity-settings- Not tainted 4.13.0-rc2+ #1
RIP: 0010:rcu_note_context_switch+0x207/0x6b0
Call Trace:
__schedule+0xda/0xba0
? kvm_async_pf_task_wait+0x1b2/0x270
schedule+0x40/0x90
kvm_async_pf_task_wait+0x1cc/0x270
? prepare_to_swait+0x22/0x70
do_async_page_fault+0x77/0xb0
? do_async_page_fault+0x77/0xb0
async_page_fault+0x28/0x30
RIP: 0010:__d_lookup_rcu+0x90/0x1e0
I encounter this when trying to stress the async page fault in L1 guest w/
L2 guests running.
Commit 9b132fbe54 (Add rcu user eqs exception hooks for async page
fault) adds rcu_irq_enter/exit() to kvm_async_pf_task_wait() to exit cpu
idle eqs when needed, to protect the code that needs use rcu. However,
we need to call the pair even if the function calls schedule(), as seen
from the above backtrace.
This patch fixes it by informing the RCU subsystem exit/enter the irq
towards/away from idle for both n.halted and !n.halted.
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: stable@vger.kernel.org
Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com>
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
There are three issues in nested_vmx_check_exception:
1) it is not taking PFEC_MATCH/PFEC_MASK into account, as reported
by Wanpeng Li;
2) it should rebuild the interruption info and exit qualification fields
from scratch, as reported by Jim Mattson, because the values from the
L2->L0 vmexit may be invalid (e.g. if an emulated instruction causes
a page fault, the EPT misconfig's exit qualification is incorrect).
3) CR2 and DR6 should not be written for exception intercept vmexits
(CR2 only for AMD).
This patch fixes the first two and adds a comment about the last,
outlining the fix.
Cc: Jim Mattson <jmattson@google.com>
Cc: Wanpeng Li <wanpeng.li@hotmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Do this in the caller of nested_vmx_vmexit instead.
nested_vmx_check_exception was doing a vmwrite to the vmcs02's
VM_EXIT_INTR_ERROR_CODE field, so that prepare_vmcs12 would move
the field to vmcs12->vm_exit_intr_error_code. However that isn't
possible on pre-Haswell machines. Moving the vmcs12 write to the
callers fixes it.
Reported-by: Jim Mattson <jmattson@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
[Changed nested_vmx_reflect_vmexit() return type to (int)1 from (bool)1,
thanks to fengguang.wu@intel.com]
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com>
Functions clear_user_highpage, copy_user_highpage, flush_dcache_page,
local_flush_cache_range and local_flush_cache_page may be used from
modules. Export them.
Cc: stable@vger.kernel.org
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
csum_partial and csum_partial_copy_generic are defined unconditionally
and are available even when CONFIG_NET is disabled. They are used not
only by the network drivers, but also by scsi and media.
Don't limit these functions export by CONFIG_NET.
Cc: stable@vger.kernel.org
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
In an ideal world, CNTFRQ_EL0 always contains the timer frequency
for the kernel to use. Sadly, we get quite a few broken systems
where the firmware authors cannot be bothered to program that
register on all CPUs, and rely on DT to provide that frequency.
So when trapping CNTFRQ_EL0, make sure to return the actual rate
(as known by the kernel), and not CNTFRQ_EL0.
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
The HPET resume path abuses irq_domain_[de]activate_irq() to restore the
MSI message in the HPET chip for the boot CPU on resume and it relies on an
implementation detail of the interrupt core code, which magically makes the
HPET unmask call invoked via a irq_disable/enable pair. This worked as long
as the irq code did unconditionally invoke the unmask() callback. With the
recent changes which keep track of the masked state to avoid expensive
hardware access, this does not longer work. As a consequence the HPET timer
interrupts are not unmasked which breaks resume as the boot CPU waits
forever that a timer interrupt arrives.
Make the restore of the MSI message explicit and invoke the unmask()
function directly. While at it get rid of the pointless affinity setting as
nothing can change the affinity of the interrupt and the vector across
suspend/resume. The restore of the MSI message reestablishes the previous
affinity setting which is the correct one.
Fixes: bf22ff45be ("genirq: Avoid unnecessary low level irq function calls")
Reported-and-tested-by: Tomi Sarvela <tomi.p.sarvela@intel.com>
Reported-by: Martin Peres <martin.peres@linux.intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Cc: jeffy.chen@rock-chips.com
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Link: http://lkml.kernel.org/r/alpine.DEB.2.20.1707312158590.2287@nanos
While working on enabling queued rwlock on SPARC, found this following
code in include/asm-generic/qrwlock.h which uses CONFIG_CPU_BIG_ENDIAN
to clear a byte.
static inline u8 *__qrwlock_write_byte(struct qrwlock *lock)
{
return (u8 *)lock + 3 * IS_BUILTIN(CONFIG_CPU_BIG_ENDIAN);
}
Problem is many of the fixed big endian architectures don't define
CPU_BIG_ENDIAN and clears the wrong byte.
Define CPU_BIG_ENDIAN for parisc architecture to fix it.
Signed-off-by: Babu Moger <babu.moger@oracle.com>
Signed-off-by: Helge Deller <deller@gmx.de>
The watchdog soft-NMI exception stack setup loads a stack pointer
twice, which is an obvious error. It ends up using the system reset
interrupt (true-NMI) stack, which is also a bug because the watchdog
could be preempted by a system reset interrupt that overwrites the
NMI stack.
Change the soft-NMI to use the "emergency stack". The current kernel
stack is not used, because of the longer-term goal to prevent
asynchronous stack access using soft-disable.
Fixes: 2104180a53 ("powerpc/64s: implement arch-specific hardlockup watchdog")
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
-----BEGIN PGP SIGNATURE-----
iQEcBAABAgAGBQJZapWhAAoJEHm+PkMAQRiGKb0IAJM6b7SbWaw69Og7+qiFB+zZ
xp29iXqbE9fPISC6a5BRQV1ONjeDM6opGixGHqGC8Hla6k2IYz25VDNoF8wd0MXN
cz/Ih20vd3C5afxXGe5cTT8lsPAlV0mWXxForlu6j8jPeL62FPfq6RhEkw7AcrYL
yfYy3k3qSdOrrvBdII0WAAUi46UfIs+we9BQgbsMbkHOiqV2K0MOrzKE84Xbgepq
RAy2xg6P4b4+hTx8xTrYc1MXwpnqjRc0oJ08gdmiwW3AOOU7LxYFn7zDkLPWi9Rr
g4x6r4YhBTGxT4wNvovLIiqd9QFs//dMCuPWYwEtTICG48umIqqq24beQ0mvCdg=
=08Ic
-----END PGP SIGNATURE-----
Merge tag 'v4.13-rc1' into fixes
The fixes branch is based off a random pre-rc1 commit, because we had
some fixes that needed to go in before rc1 was released.
However we now need to fix some code that went in after that point, but
before rc1, so merge rc1 to get that code into fixes so we can fix it!
Since kernel 4.11 the thread and irq stacks on parisc randomly overflow
the default size of 16k. The reason why stack usage suddenly grew is yet
unknown.
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org # 4.11+
Signed-off-by: Helge Deller <deller@gmx.de>
In testing James' patch to drivers/parisc/pdc_stable.c, I hit the BUG
statement in flush_cache_range() during a system shutdown:
kernel BUG at arch/parisc/kernel/cache.c:595!
CPU: 2 PID: 6532 Comm: kworker/2:0 Not tainted 4.13.0-rc2+ #1
Workqueue: events free_ioctx
IAOQ[0]: flush_cache_range+0x144/0x148
IAOQ[1]: flush_cache_page+0x0/0x1a8
RP(r2): flush_cache_range+0xec/0x148
Backtrace:
[<00000000402910ac>] unmap_page_range+0x84/0x880
[<00000000402918f4>] unmap_single_vma+0x4c/0x60
[<0000000040291a18>] zap_page_range_single+0x110/0x160
[<0000000040291c34>] unmap_mapping_range+0x174/0x1a8
[<000000004026ccd8>] truncate_pagecache+0x50/0xa8
[<000000004026cd84>] truncate_setsize+0x54/0x70
[<000000004033d534>] put_aio_ring_file+0x44/0xb0
[<000000004033d5d8>] aio_free_ring+0x38/0x140
[<000000004033d714>] free_ioctx+0x34/0xa8
[<00000000401b0028>] process_one_work+0x1b8/0x4d0
[<00000000401b04f4>] worker_thread+0x1b4/0x648
[<00000000401b9128>] kthread+0x1b0/0x208
[<0000000040150020>] end_fault_vector+0x20/0x28
[<0000000040639518>] nf_ip_reroute+0x50/0xa8
[<0000000040638ed0>] nf_ip_route+0x10/0x78
[<0000000040638c90>] xfrm4_mode_tunnel_input+0x180/0x1f8
CPU: 2 PID: 6532 Comm: kworker/2:0 Not tainted 4.13.0-rc2+ #1
Workqueue: events free_ioctx
Backtrace:
[<0000000040163bf0>] show_stack+0x20/0x38
[<0000000040688480>] dump_stack+0xa8/0x120
[<0000000040163dc4>] die_if_kernel+0x19c/0x2b0
[<0000000040164d0c>] handle_interruption+0xa24/0xa48
This patch modifies flush_cache_range() to handle non current contexts.
In as much as this occurs infrequently, the simplest approach is to
flush the entire cache when this happens.
Signed-off-by: John David Anglin <dave.anglin@bell.net>
Cc: stable@vger.kernel.org # 4.9+
Signed-off-by: Helge Deller <deller@gmx.de>
Pull x86 fixes from Thomas Gleixner:
"A small set of x86 fixes:
- prevent the kernel from using the EFI reboot method when EFI is
disabled.
- two patches addressing clang issues"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/boot: Disable the address-of-packed-member compiler warning
x86/efi: Fix reboot_mode when EFI runtime services are disabled
x86/boot: #undef memcpy() et al in string.c
Pull perf fixes from Thomas Gleixner:
"A couple of fixes for performance counters and kprobes:
- a series of small patches which make the uncore performance
counters on Skylake server systems work correctly
- add a missing instruction slot release to the failure path of
kprobes"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
kprobes/x86: Release insn_slot in failure path
perf/x86/intel/uncore: Fix missing marker for skx_uncore_cha_extra_regs
perf/x86/intel/uncore: Fix SKX CHA event extra regs
perf/x86/intel/uncore: Remove invalid Skylake server CHA filter field
perf/x86/intel/uncore: Fix Skylake server CHA LLC_LOOKUP event umask
perf/x86/intel/uncore: Fix Skylake server PCU PMU event format
perf/x86/intel/uncore: Fix Skylake UPI PMU event masks
After commit f8475cef90 "x86: use common aperfmperf_khz_on_cpu() to
calculate KHz using APERF/MPERF" the scaling_cur_freq policy attribute
in sysfs only behaves as expected on x86 with APERF/MPERF registers
available when it is read from at least twice in a row. The value
returned by the first read may not be meaningful, because the
computations in there use cached values from the previous iteration
of aperfmperf_snapshot_khz() which may be stale.
To prevent that from happening, modify arch_freq_get_on_cpu() to
call aperfmperf_snapshot_khz() twice, with a short delay between
these calls, if the previous invocation of aperfmperf_snapshot_khz()
was too far back in the past (specifically, more that 1s ago).
Also, as pointed out by Doug Smythies, aperf_delta is limited now
and the multiplication of it by cpu_khz won't overflow, so simplify
the s->khz computations too.
Fixes: f8475cef90 "x86: use common aperfmperf_khz_on_cpu() to calculate KHz using APERF/MPERF"
Reported-by: Doug Smythies <dsmythies@telus.net>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Simon Horman reported that Koelsch and Lager hang during boot, and
bisected this to commit 1c3c5eab17 ("sched/core: Enable
might_sleep() and smp_processor_id() checks early").
The da9063/da9210 regulator quirk for R-Car Gen2 boards uses a bus
notifier, and unregisters the notifier when it is no longer needed.
However, a notifier must not be unregistered from within the call chain.
This bug went unnoticed, as blocking_notifier_chain_unregister() didn't
take the semaphore during early boot. The aforementioned commit changed
that behavior, leading to a deadlock.
Fix this by removing the call to bus_unregister_notifier(), and keeping
local completion state instead.
Reported-by: Simon Horman <horms+renesas@verge.net.au>
Fixes: 663fbb5215 ("ARM: shmobile: R-Car Gen2: Add da9063/da9210 regulator quirk")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Currently building kernel for xtensa core with aliasing WT cache fails
with the following messages:
mm/memory.c:2152: undefined reference to `flush_dcache_page'
mm/memory.c:2332: undefined reference to `local_flush_cache_page'
mm/memory.c:1919: undefined reference to `local_flush_cache_range'
mm/memory.c:4179: undefined reference to `copy_to_user_page'
mm/memory.c:4183: undefined reference to `copy_from_user_page'
This happens because implementation of these functions is only compiled
when data cache is WB, which looks wrong: even when data cache doesn't
need flushing it still needs invalidation. The functions like
__flush_[invalidate_]dcache_* are correctly defined for both WB and WT
caches (and even if they weren't that'd still be ok, just slower).
Fix this by providing the same implementation of the above functions for
both WB and WT cache.
Cc: stable@vger.kernel.org
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
PPC: host crash fixes.
x86: bugfixes, including making nested posted interrupts really work.
Generic: tweaks to kvm_stat and to uevents
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.22 (GNU/Linux)
iQEcBAABAgAGBQJZe2EYAAoJEL/70l94x66D4JYH/AnvioKWTsplhUKt4Y4JlpJX
EXYjQd/CIZ+MHNNUH+U+XEj6tKQymKrz4TeZSs1o0nyxCeyparR3gK27OYVpPspN
GkPSit3hyRgW9r5uXp6pZCJuFCAMpMZ6z4sKbT1FxDhnWnpWayV9w8KA+yQT/UUX
dNQ9JJPUxApcM4NCaj2OCQ8K1koNIDCc52+jATf0iK/Heiaf6UGqCcHXUIy5I5wM
OWk05Qm32VBAYb6P6FfoyGdLMNAAkJtr1fyOJDkxX730CYgwpjIP0zifnJ1bt8V2
YRnjvPO5QciDHbZ8VynwAkKi0ZAd8psjwXh0KbyahPL/2/sA2xCztMH25qweriI=
=fsfr
-----END PGP SIGNATURE-----
Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm
Pull KVM fixes from Paolo Bonzini:
"s390:
- SRCU fix
PPC:
- host crash fixes
x86:
- bugfixes, including making nested posted interrupts really work
Generic:
- tweaks to kvm_stat and to uevents"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm:
KVM: LAPIC: Fix reentrancy issues with preempt notifiers
tools/kvm_stat: add '-f help' to get the available event list
tools/kvm_stat: use variables instead of hard paths in help output
KVM: nVMX: Fix loss of L2's NMI blocking state
KVM: nVMX: Fix posted intr delivery when vcpu is in guest mode
x86: irq: Define a global vector for nested posted interrupts
KVM: x86: do mask out upper bits of PAE CR3
KVM: make pid available for uevents without debugfs
KVM: s390: take srcu lock when getting/setting storage keys
KVM: VMX: remove unused field
KVM: PPC: Book3S HV: Fix host crash on changing HPT size
KVM: PPC: Book3S HV: Enable TM before accessing TM registers
- Ensure we have a guard page after the kernel image in vmalloc
- Fix incorrect prefetch stride in copy_page
- Ensure irqs are disabled in die()
- Fix for event group validation in QCOM L2 PMU driver
- Fix requesting of PMU IRQs on AMD Seattle
- Minor cleanups and fixes
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1
iQEcBAABCgAGBQJZey1iAAoJELescNyEwWM0w/0H/1RaHFUSoFUIoL+qFD0eGXcp
hORI0sIHrUlHRONTFYMTyNko7kxELz5aDm6pc87dzBUNoUq3gxhqeEa0zsmwOPsQ
m4iDa7r9xXT+nBITe2auAg6miEMX7Ym448dDrIyKNcRK+2SyZoFqS0vr8UVqs1P/
NwdFGgpKHbV4r1Jeoosom+n7VnuyE0vYBKo8TlRks6NvQJoh2duiPkL+AsBgCfBq
fznck7jIPL4z4kf4Fp/Yz1QsmMhkDSidPmGD/m97Bj4wvEbMwf0u8Dnv1tySK5wx
NwKeN0Dn7JphtL5c5j+OGiri7gTcswjxHJ9f6d0Ez+2TwnjWFM6JNQ+xdVqFcxc=
=EpS9
-----END PGP SIGNATURE-----
Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull arm64 fixes from Will Deacon:
"I'd been collecting these whilst we debugged a CPU hotplug failure,
but we ended up diagnosing that one to tglx, who has taken a fix via
the -tip tree separately.
We're seeing some NFS issues that we haven't gotten to the bottom of
yet, and we've uncovered some issues with our backtracing too so there
might be another fixes pull before we're done.
Summary:
- Ensure we have a guard page after the kernel image in vmalloc
- Fix incorrect prefetch stride in copy_page
- Ensure irqs are disabled in die()
- Fix for event group validation in QCOM L2 PMU driver
- Fix requesting of PMU IRQs on AMD Seattle
- Minor cleanups and fixes"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: mmu: Place guard page after mapping of kernel image
drivers/perf: arm_pmu: Request PMU SPIs with IRQF_PER_CPU
arm64: sysreg: Fix unprotected macro argmuent in write_sysreg
perf: qcom_l2: fix column exclusion check
arm64/lib: copy_page: use consistent prefetch stride
arm64/numa: Drop duplicate message
perf: Convert to using %pOF instead of full_name
arm64: Convert to using %pOF instead of full_name
arm64: traps: disable irq in die()
arm64: atomics: Remove '&' from '+&' asm constraint in lse atomics
arm64: uaccess: Remove redundant __force from addr cast in __range_ok
The highlight is Ben's patch to work around a host killing bug when running KVM
guests with the Radix MMU on Power9. See the long change log of that commit for
more detail.
And then three fairly minor fixes:
- Fix of_node_put() underflow during reconfig remove, using old DLPAR tools.
- Fix recently introduced ld version check with 64-bit LE-only toolchain.
- Free the subpage_prot_table correctly, avoiding a memory leak.
Thanks to:
Aneesh Kumar K.V, Benjamin Herrenschmidt, Laurent Vivier.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=Z6uF
-----END PGP SIGNATURE-----
Merge tag 'powerpc-4.13-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
"The highlight is Ben's patch to work around a host killing bug when
running KVM guests with the Radix MMU on Power9. See the long change
log of that commit for more detail.
And then three fairly minor fixes:
- fix of_node_put() underflow during reconfig remove, using old DLPAR
tools.
- fix recently introduced ld version check with 64-bit LE-only
toolchain.
- free the subpage_prot_table correctly, avoiding a memory leak.
Thanks to: Aneesh Kumar K.V, Benjamin Herrenschmidt, Laurent Vivier"
* tag 'powerpc-4.13-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/mm/hash: Free the subpage_prot_table correctly
powerpc/Makefile: Fix ld version check with 64-bit LE-only toolchain
powerpc/pseries: Fix of_node_put() underflow during reconfig remove
powerpc/mm/radix: Workaround prefetch issue with KVM
- sunxi: Correct time phase settings
- omap_hsmmc: Clean up some dead code
- dw_mmc: Fix message printed for deprecated num-slots DT binding
- dw_mmc: Fix DT documentation
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=xWHL
-----END PGP SIGNATURE-----
Merge tag 'mmc-v4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC fixes from Ulf Hansson:
"Here are a couple of mmc fixes intended for v4.13-rc1.
I have also included a couple of cleanup patches in this pull request
for OMAP2+, related to the omap_hsmmc driver. The reason is because of
the changes are also depending on OMAP SoC specific code, so this
simplifies how to deal with this.
Summary:
MMC host:
- sunxi: Correct time phase settings
- omap_hsmmc: Clean up some dead code
- dw_mmc: Fix message printed for deprecated num-slots DT binding
- dw_mmc: Fix DT documentation"
* tag 'mmc-v4.13-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
Documentation: dw-mshc: deprecate num-slots
mmc: dw_mmc: fix the wrong condition check of getting num-slots from DT
mmc: host: omap_hsmmc: remove unused platform callbacks
ARM: OMAP2+: hsmmc.c: Remove dead code
mmc: sunxi: Keep default timing phase settings for new timing mode
Commit 8e3f1b1d82 ("powerpc/powernv/pci: Enable 64-bit devices to access
>4GB DMA space") introduced the ability for PCI device drivers to request a
DMA mask between 64 and 32 bits and actually get a mask greater than
32-bits. However currently if certain machine configuration dependent
conditions are not meet the code silently falls back to a 32-bit mask.
This makes it hard for device drivers to detect which mask they actually
got. Instead we should return an error when the request could not be
fulfilled which allows drivers to either fallback or implement other
workarounds as documented in DMA-API-HOWTO.txt.
Signed-off-by: Alistair Popple <alistair@popple.id.au>
Acked-by: Russell Currey <ruscur@russell.cc>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Historically the boot wrapper was always built 32-bit big endian, even
for 64-bit kernels. That was because old firmwares didn't necessarily
support booting a 64-bit image. Because of that arch/powerpc/boot/Makefile
uses CROSS32CC for compilation.
However when we added 64-bit little endian support, we also added
support for building the boot wrapper 64-bit. However we kept using
CROSS32CC, because in most cases it is just CC and everything works.
However if the user doesn't specify CROSS32_COMPILE (which no one ever
does AFAIK), and CC is *not* biarch (32/64-bit capable), then CROSS32CC
becomes just "gcc". On native systems that is probably OK, but if we're
cross building it definitely isn't, leading to eg:
gcc ... -m64 -mlittle-endian -mabi=elfv2 ... arch/powerpc/boot/cpm-serial.c
gcc: error: unrecognized argument in option ‘-mabi=elfv2’
gcc: error: unrecognized command line option ‘-mlittle-endian’
make: *** [zImage] Error 2
To fix it, stop using CROSS32CC, because we may or may not be building
32-bit. Instead setup a BOOTCC, which defaults to CC, and only use
CROSS32_COMPILE if it's set and we're building for 32-bit.
Fixes: 147c05168f ("powerpc/boot: Add support for 64bit little endian wrapper")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Reviewed-by: Cyril Bur <cyrilbur@gmail.com>
In smp_cpus_done() we need to call smp_ops->setup_cpu() for the boot
CPU, which means it has to run *on* the boot CPU.
In the past we ensured it ran on the boot CPU by changing the CPU
affinity mask of current directly. That was removed in commit
6d11b87d55 ("powerpc/smp: Replace open coded task affinity logic"),
and replaced with a work queue call.
Unfortunately using a work queue leads to a lockdep warning, now that
the CPU hotplug lock is a regular semaphore:
======================================================
WARNING: possible circular locking dependency detected
...
kworker/0:1/971 is trying to acquire lock:
(cpu_hotplug_lock.rw_sem){++++++}, at: [<c000000000100974>] apply_workqueue_attrs+0x34/0xa0
but task is already holding lock:
((&wfc.work)){+.+.+.}, at: [<c0000000000fdb2c>] process_one_work+0x25c/0x800
...
CPU0 CPU1
---- ----
lock((&wfc.work));
lock(cpu_hotplug_lock.rw_sem);
lock((&wfc.work));
lock(cpu_hotplug_lock.rw_sem);
Although the deadlock can't happen in practice, because
smp_cpus_done() only runs in early boot before CPU hotplug is allowed,
lockdep can't tell that.
Luckily in commit 8fb12156b8 ("init: Pin init task to the boot CPU,
initially") tglx changed the generic code to pin init to the boot CPU
to begin with. The unpinning of init from the boot CPU happens in
sched_init_smp(), which is called after smp_cpus_done().
So smp_cpus_done() is always called on the boot CPU, which means we
don't need the work queue call at all - and the lockdep warning goes
away.
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
The vast majority of virtual allocations in the vmalloc region are followed
by a guard page, which can help to avoid overruning on vma into another,
which may map a read-sensitive device.
This patch adds a guard page to the end of the kernel image mapping (i.e.
following the data/bss segments).
Cc: Mark Rutland <mark.rutland@arm.com>
Reviewed-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
The clang warning 'address-of-packed-member' is disabled for the general
kernel code, also disable it for the x86 boot code.
This suppresses a bunch of warnings like this when building with clang:
./arch/x86/include/asm/processor.h:535:30: warning: taking address of
packed member 'sp0' of class or structure 'x86_hw_tss' may result in an
unaligned pointer value [-Waddress-of-packed-member]
return this_cpu_read_stable(cpu_tss.x86_tss.sp0);
^~~~~~~~~~~~~~~~~~~
./arch/x86/include/asm/percpu.h:391:59: note: expanded from macro
'this_cpu_read_stable'
#define this_cpu_read_stable(var) percpu_stable_op("mov", var)
^~~
./arch/x86/include/asm/percpu.h:228:16: note: expanded from macro
'percpu_stable_op'
: "p" (&(var)));
^~~
Signed-off-by: Matthias Kaehlcke <mka@chromium.org>
Cc: Doug Anderson <dianders@chromium.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20170725215053.135586-1-mka@chromium.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Currently flush_tmregs_to_thread() does not save the TM SPRs (TFHAR,
TFIAR, TEXASR) to the thread struct, unless the process is currently
inside a suspended transaction.
If the process is core dumping, and the TM SPRs have changed since the
last time the process was context switched, then we will save stale
values of the TM SPRs to the core dump.
Fix it by saving the live register state to the thread struct in that
case.
Fixes: 08e1c01d6a ("powerpc/ptrace: Enable support for TM SPR state")
Cc: stable@vger.kernel.org # v4.8+
Signed-off-by: Gustavo Romero <gromero@linux.vnet.ibm.com>
Reviewed-by: Cyril Bur <cyrilbur@gmail.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
The Radix MMU translation tree as defined in ISA v3.0 contains two
different types of entry, directories and leaves. Leaves are
identified by _PAGE_PTE being set.
The formats of the two entries are different, with the directory
entries containing no spare bits for use by software. In particular
the bit we use for _PAGE_DEVMAP is not reserved for software, and is
part of the NLB (Next Level Base) field, essentially the address of
the next level in the tree.
Note that the Linux pte_t is not == _PAGE_PTE. A huge page pmd
entry (or devmap!) is also a leaf and so has _PAGE_PTE set, even
though we use a pmd_t for it in Linux.
The fix is to ensure that the pmd/pte_devmap() confirm they are
looking at a leaf entry (_PAGE_PTE) as well as checking _PAGE_DEVMAP.
Fixes: ebd3119793 ("powerpc/mm: Add devmap support for ppc64")
Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
Tested-by: Laurent Vivier <lvivier@redhat.com>
Tested-by: Jose Ricardo Ziviani <joserz@linux.vnet.ibm.com>
Reviewed-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com>
Reviewed-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
[mpe: Add a comment in the code and flesh out change log]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
The hardware spinlock drivers now depend on HWSPINLOCK (instead of
selecting it), so we need to explicitly enable it after commit
35fc8a07d7 ("Make HWSPINLOCK a menuconfig to ease disabling")
Without HWSPINLOCK, various drivers are left with unsatisfied
dependencies and Qcom boards using shared memory based communication
to request regulators are failing to boot and mount rootfs.
Fix this by explicitly enabling HWSPINLOCK in defconfig.
Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org>
Signed-off-by: Andy Gross <andy.gross@linaro.org>
We get a link error trying to access the w100fb_gpio_read/write
functions from the platform when the driver is a loadable module
or not built-in, so the platform already uses 'select' to hard-enable
the driver.
However, that fails if the framebuffer subsystem is disabled
altogether.
I've considered various ways to fix this properly, but they
all seem like too much work or too risky, so this simply
adds another 'select' to force the subsystem on as well.
Fixes: 82427de2c7 ("ARM: pxa: PXA_ESERIES depends on FB_W100.")
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
An empty macro definition can cause unexpected behavior, in
case of the ixp4xx ioport_unmap, we get two warnings:
drivers/net/wireless/marvell/libertas/if_cs.c: In function 'if_cs_release':
drivers/net/wireless/marvell/libertas/if_cs.c:826:3: error: suggest braces around empty body in an 'if' statement [-Werror=empty-body]
ioport_unmap(card->iobase);
drivers/vfio/pci/vfio_pci_rdwr.c: In function 'vfio_pci_vga_rw':
drivers/vfio/pci/vfio_pci_rdwr.c:230:15: error: the omitted middle operand in ?: will always be 'true', suggest explicit middle operand [-Werror=parentheses]
is_ioport ? ioport_unmap(iomem) : iounmap(iomem);
This uses an inline function to define the macro in a safer way.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Krzysztof Halasa <khalasa@piap.pl>
Just like ARCH_MULTIPLATFORM, we want to use ARM_PATCH_PHYS_VIRT
when possible, but that fails for NOMMU or XIP_KERNEL configurations.
Using 'imply' instead of 'select' gets this right and only uses
the symbol when we don't have to hardcode the address anyway.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
This variable may be used by some devices that each have their
on Kconfig symbol, or by none of them, and that causes a build
warning:
arch/arm/mach-mmp/devices.c:241:12: error: 'usb_dma_mask' defined but not used [-Werror=unused-variable]
Marking it __maybe_unused avoids the warning.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
The omap_generic_init() and omap_hwmod_init_postsetup() functions are
used in the initialization for all OMAP2+ SoC types, but in the
extreme case that those are all disabled, we get a warning about
unused code:
arch/arm/mach-omap2/io.c:412:123: error: 'omap_hwmod_init_postsetup' defined but not used [-Werror=unused-function]
arch/arm/mach-omap2/board-generic.c:30:123: error: 'omap_generic_init' defined but not used [-Werror=unused-function]
This annotates both as __maybe_unused to shut up that warning.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Tony Lindgren <tony@atomide.com>
Reviewed-by: Sebastian Reichel <sebastian.reichel@collabora.co.uk>
The osk_mistral_init() contains code that is only compiled when
CONFIG_PM is set, but it uses a variable that is declared outside
of the #ifdef:
arch/arm/mach-omap1/board-osk.c: In function 'osk_mistral_init':
arch/arm/mach-omap1/board-osk.c:513:7: warning: unused variable 'ret' [-Wunused-variable]
This removes the #ifdef around the user of the variable,
make it always used.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Suggested-by: Tony Lindgren <tony@atomide.com>
Acked-by: Aaro Koskinen <aaro.koskinen@iki.fi>
sirfsoc_init_late is called by each of the three individual
SoC definitions, but in a randconfig build, we can encounter
a situation where they are all disabled:
arch/arm/mach-prima2/common.c:18:123: warning: 'sirfsoc_init_late' defined but not used [-Wunused-function]
While that is not a useful configuration, the warning also
doesn't help, so this patch marks the function as __maybe_unused
to let the compiler know it is there intentionally.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
ixp4xx defines the arguments to its __indirect_writesb() and other
functions as pointers to fixed-size data. This is not necessarily
wrong, and it works most of the time, but it causes warnings in
at least one driver:
drivers/net/ethernet/smsc/smc91x.c: In function 'smc_rcv':
drivers/net/ethernet/smsc/smc91x.c:495:21: error: passing argument 2 of '__indirect_readsw' from incompatible pointer type [-Werror=incompatible-pointer-types]
SMC_PULL_DATA(lp, data, packet_len - 4);
All other definitions of the same functions pass void pointers,
so doing the same here avoids the warnings.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Krzysztof Halasa <khalasa@piap.pl>
The modem pm handler in the ams-delta board uses regulator_enable()
but does not check for a successful return code:
board-ams-delta.c:521:3: error: ignoring return value of 'regulator_enable', declared with attribute warn_unused_result [-Werror=unused-result]
It is not easy to propagate that return code to the callers in
uart_configure_port/uart_suspend_port/uart_resume_port, unless
we change all UART drivers, and it is unclear what those would
do with the return code.
Instead, this patch uses a runtime warning to replace the
compiletime warning. I have checked that the regulator in question
is hardcoded to a fixed-voltage GPIO regulator, and that should
never fail to get enabled if I understand the code right.
Acked-by: Tony Lindgren <tony@atomide.com>
Acked-by: Aaro Koskinen <aaro.koskinen@iki.fi>
Link: https://patchwork.kernel.org/patch/8391981/
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
The RAM_SIZE macro in mach/hardware.h conflicts with macros of
the same name in multiple drivers, leading to annoying build warnings:
In file included from drivers/net/ethernet/cirrus/cs89x0.c:79:0:
drivers/net/ethernet/cirrus/cs89x0.h:324:0: error: "RAM_SIZE" redefined [-Werror]
#define RAM_SIZE 0x1000 /* The card has 4k bytes or RAM */
^
In file included from /git/arm-soc/arch/arm/mach-rpc/include/mach/io.h:16:0,
from /git/arm-soc/arch/arm/include/asm/io.h:194,
from /git/arm-soc/include/linux/scatterlist.h:8,
from /git/arm-soc/include/linux/dmaengine.h:24,
from /git/arm-soc/include/linux/netdevice.h:38,
from /git/arm-soc/drivers/net/ethernet/cirrus/cs89x0.c:54:
arch/arm/mach-rpc/include/mach/hardware.h:28:0: note: this is the location of the previous definition
#define RAM_SIZE 0x10000000
We don't use RAM_SIZE/RAM_START at all, so we could just remove
them, but it might be nice to leave them for documentation purposes,
so this renames them to RPC_RAM_SIZE/RPC_RAM_START in order to
avoid the build warnings
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
w90x900 still provides its own variant of the clk API rather than using
the generic COMMON_CLK API. This generally works, but it causes some link
errors with drivers using the clk_set_rate, clk_get_parent, clk_set_parent
or clk_round_rate functions when a platform lacks those interfaces.
This adds empty stub implementations for each of them, and I don't even
try to do something useful here but instead just print a WARN() message
to make it obvious what is going on if they ever end up being called.
The drivers that call these won't be used on these platforms (otherwise
we'd get a link error today), so the added code is harmless bloat and
will warn about accidental use.
A while ago there was a proposal to change w90x900 to use the common-clk
implementation, which would be the way it should be handled properly.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
It's a combination of the patch from Arnd Bergmann, which added empty stubs
for clk_round_rate() and clk_set_parent() and a working trivial
implementation of clk_get_parent(). The later is required for ADC driver.
Signed-off-by: Alexander Sverdlin <alexander.sverdlin@gmail.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Pull parisc fixes from Helge Deller:
- The majority of lines changed are due to regenerated defconfig files.
- The support for the Page Deallocation Table (PDT) which was merged in
the merge window for 4.13 contained a bug which crashes the kernel if
a bad page is reported by firmware. This is now fixed and the kernel
messages will show which memory slot holds the broken DIMM.
- Commit 3a166fc2d4 ("kbuild: handle libs-y archives separately from
built-in.o archives") broke linking the parisc kernel due to
millicode symbols which can't be reached then any longer. This was
fixed by modifying the parisc vmlinux.lds linker script.
- If the stack checker panics on stack overflow, avoid recursive
panics.
- Some parisc machines can't physically power off and thus instead
start after some time to flood the console by presumably detected
soft lockups. Avoid this by disabling the lockup detectors before
entering the endless for-next loop.
- Dave Anglin provided fixes which prevents TLB speculation on flushed
pages on PA8800/PA9000 CPUs.
- Arvind Yadav sent a trivial patch to constify the attribute_group
structure in our firmware on-board-flash storage driver
(pdc_stable.c)
* 'parisc-4.13-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Extend disabled preemption in copy_user_page
parisc: Prevent TLB speculation on flushed pages on CPUs that only support equivalent aliases
parisc: Suspend lockup detectors before system halt
parisc: Show DIMM slot number which holds broken memory module
parisc: Add function to return DIMM slot of physical address
parisc: Fix crash when calling PDC_PAT_MEM PDT firmware function
parisc: regenerate defconfig files
parisc: pdc_stable: constify attribute_group structures.
parisc: Merge millicode routines via linker script
parisc: Disable further stack checks when panic occurs during stack check
Pull ARM fixes from Russell King:
"Two areas addressed by these fixes:
- Fixes from Dave Martin for the signal frames that were broken with
certain configurations. No one noticed until recently.
- More kexec fixes to ensure that the crashkernel region is correctly
allocated, and a fix for the location of the device tree when
several kexec kernels are loaded"
* 'fixes' of git://git.armlinux.org.uk/~rmk/linux-arm:
ARM: 8687/1: signal: Fix unparseable iwmmxt_sigframe in uc_regspace[]
ARM: 8686/1: iwmmxt: Add missing __user annotations to sigframe accessors
ARM: kexec: fix failure to boot crash kernel
ARM: kexec: avoid allocating crashkernel region outside lowmem
Now that the CCU device tree binding headers have been merged, we can
use the properly named macros in the device tree, instead of raw
numbers.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
The datasheet said that emac register size is 0x10000 not 0x100
Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
[wens@csie.org: Fixed commit subject prefix]
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
The datasheet said that emac register size is 0x10000 not 0x104
Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
[wens@csie.org: Fixed commit subject prefix]
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Since the PMU register interface is banked per CPU, CPU PMU interrrupts
cannot be handled by a CPU other than the one with the PMU asserting the
interrupt. This means that migrating PMU SPIs, as we do during a CPU
hotplug operation doesn't make any sense and can lead to the IRQ being
disabled entirely if we route a spurious IRQ to the new affinity target.
This has been observed in practice on AMD Seattle, where CPUs on the
non-boot cluster appear to take a spurious PMU IRQ when coming online,
which is routed to CPU0 where it cannot be handled.
This patch passes IRQF_PERCPU for PMU SPIs and forcefully sets their
affinity prior to requesting them, ensuring that they cannot
be migrated during hotplug events. This interacts badly with the DB8500
erratum workaround that ping-pongs the interrupt affinity from the handler,
so we avoid passing IRQF_PERCPU in that case by allowing the IRQ flags
to be overridden in the platdata.
Fixes: 3cf7ee98b8 ("drivers/perf: arm_pmu: move irq request/free into probe")
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
sa1100 provides its own variant of the clk API rather than using the
generic COMMON_CLK API. This generally works, but it causes some link
errors with drivers using the clk_set_rate, clk_get_parent, clk_set_parent
or clk_round_rate functions when a platform lacks those interfaces.
This adds trivial stub implementations for each of them, based on
the behavior of the COMMON_CLK implementation:
- set_rate() and set_parent() report success without doing anything
- round_rate() returns the clk rate
- get_parent() returns NULL.
This adds the minimal bloat and should do the right thing for
the simple clock hardware in this SoC.
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
davinci still has its own clk implementation, but lacks
a clk_get_parent() helper, which can lead to link errors
in randconfig builds.
This adds the usual implementation.
Acked-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
In commit 3169663ac5 "ARM: sa11x0/pxa: convert OS timer registers
to IOMEM", the definition of the OSCR macro was changed to be an
__iomem pointer, but the same register is also used by the XIP
code. This patch does the corresponding change here as well.
On PXA, the IRQ register definitions were removed even earlier, in
commit 5d284e353e ("ARM: pxa: avoid accessing interrupt registers
directly"). This patch unfortunately brings some of that back. An
earlier version of my patch moved the code into an external function,
which could not work for CONFIG_XIP_KERNEL+CONFIG_MTD_XIP, so this
restores something close to the original code.
Link: http://lists.infradead.org/pipermail/linux-arm-kernel/2014-March/241716.html
Acked-by: Robert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
A change to the platform data definitions caused a warning in the board code:
arch/arm/mach-davinci/board-da850-evm.c:1221:13: warning: initialization discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]
arch/arm/mach-davinci/board-da850-evm.c:1231:13: warning: initialization discards ‘const’ qualifier from pointer target type [-Wdiscarded-qualifiers]
This is a bit unfortunate, since we generally like structure definitions to
be const, but as this is legacy code, the easiest way out is still to
remove the 'const' annotation here.
Fixes: 4a5f8ae50b ("[media] davinci: vpif_capture: get subdevs from DT when available")
Fixes: 231ce279e6 ("ARM: davinci: fix const warnings")
Acked-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Drop the unused endpoints. They should only be used when there is an
actual remote-endpoint connected.
Cc: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Drop the unused endpoints. They should only be used when there is
an actual remote-endpoint connected.
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
- Fix wrong irq type for gpio expeander on Armada 388 GP
- Use __pa_symbol instead of virt_to_phys in the mv98dx3236 platform
SMP code
-----BEGIN PGP SIGNATURE-----
iIEEABECAEEWIQQYqXDMF3cvSLY+g9cLBhiOFHI71QUCWW3X4iMcZ3JlZ29yeS5j
bGVtZW50QGZyZWUtZWxlY3Ryb25zLmNvbQAKCRALBhiOFHI71e78AJ4+wNdgOn6C
8PVxz97Ngx2L0O44AgCfXWXbhHye3y4p2wfLfFTBT1prMZ4=
=gydP
-----END PGP SIGNATURE-----
Merge tag 'mvebu-fixes-4.13-1' of git://git.infradead.org/linux-mvebu into fixes
Pull "mvebu fixes for 4.13 (part 1)" from Gregory CLEMENT:
- Fix wrong irq type for gpio expeander on Armada 388 GP
- Use __pa_symbol instead of virt_to_phys in the mv98dx3236 platform
SMP code
* tag 'mvebu-fixes-4.13-1' of git://git.infradead.org/linux-mvebu:
ARM: dts: armada-38x: Fix irq type for pca955
ARM: mvebu: use __pa_symbol in the mv98dx3236 platform SMP code
Add necessary parent clocks for audss (Audio SubSystem, MAUDIO) clock
controller block.
This allows driver to keep EPLL enabled before accessing any MAUDIO
registers thus fixing silent hang. This silent hang appeared with
commit 6edfa11cb3 ("clk: samsung: Add enable/disable operation for
PLL36XX clocks"), e.g. on Odroid U3 usually with last (but unrelated)
messages:
[ 2.382741] input: gpio_keys as /devices/platform/gpio_keys/input/input0
[ 2.405686] usb 1-3: new high-speed USB device number 3 using exynos-ehci
[ 2.419843] max77686-rtc max77686-rtc: setting system clock to 2017-06-21 17:04:13 UTC (1498064653)
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Correct order of sound clock frequencies for ULCB boards
used by r8a7795 and r8a7796 SoCs.
These sounds clock frequencies are used as the ADG clock (output clocks
for audio module) initial setting and sound codec's initial system clock
which needs the maximum clock frequency. Thus, descending order is
required.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=bjUb
-----END PGP SIGNATURE-----
Merge tag 'renesas-fixes2-for-v4.13' of https://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into fixes
Pull "Second Round of Renesas ARM Based SoC Fixes for v4.13" from Simon Horman:
Correct order of sound clock frequencies for ULCB boards
used by r8a7795 and r8a7796 SoCs.
These sounds clock frequencies are used as the ADG clock (output clocks
for audio module) initial setting and sound codec's initial system clock
which needs the maximum clock frequency. Thus, descending order is
required.
* tag 'renesas-fixes2-for-v4.13' of https://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
arm64: dts: renesas: ulcb: sound clock-frequency needs descending order
- Fix disable_irq related shared IRQ warnings for omap3 PRM
- Fix omap4 legacy code regression that accidentally removed code that
we still need for PRM interrupts
- Fix dm8168-evm NAND pins and MMC write protect pin direction
- Fix dra71-evm mdio impedance values
-----BEGIN PGP SIGNATURE-----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=ibLi
-----END PGP SIGNATURE-----
Merge tag 'omap-for-v4.13/fixes-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into fixes
Pull "Few fixes for omaps for issues found recently" from Tony Lindgren:
- Fix disable_irq related shared IRQ warnings for omap3 PRM
- Fix omap4 legacy code regression that accidentally removed code that
we still need for PRM interrupts
- Fix dm8168-evm NAND pins and MMC write protect pin direction
- Fix dra71-evm mdio impedance values
* tag 'omap-for-v4.13/fixes-merge-window' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
ARM: dts: dra71-evm: mdio: Fix impedance values
ARM: dts: dm816x: Correct the state of the write protect pin
ARM: dts: dm816x: Correct NAND support nodes
ARM: OMAP4: Fix legacy code clean-up regression
ARM: OMAP2+: Fix omap3 prm shared irq
Correct order of sound clock frequencies for Salvator boards
used by r8a7795 and r8a7796 SoCs.
These sounds clock frequencies are used as the ADG clock (output clocks
for audio module) initial setting and sound codec's initial system clock
which needs the maximum clock frequency. Thus, descending order is
required.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1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=t800
-----END PGP SIGNATURE-----
Merge tag 'renesas-fixes-for-v4.13' of https://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas into fixes
Pull "Renesas ARM Based SoC Fixes for v4.13" from Simon Horman:
Correct order of sound clock frequencies for Salvator boards
used by r8a7795 and r8a7796 SoCs.
These sounds clock frequencies are used as the ADG clock (output clocks
for audio module) initial setting and sound codec's initial system clock
which needs the maximum clock frequency. Thus, descending order is
required.
* tag 'renesas-fixes-for-v4.13' of https://git.kernel.org/pub/scm/linux/kernel/git/horms/renesas:
arm64: renesas: salvator-common: sound clock-frequency needs descending order
Fixes: dad6f37c26 ("powerpc: subpage_protect: Increase the array size to take care of 64TB")
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Tested-by: Ram Pai <linuxram@us.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
-----BEGIN PGP SIGNATURE-----
iQEcBAABAgAGBQJZdS4PAAoJEHm+PkMAQRiGbEYH/2mukTPOUAfNoWaVjO2YHxuL
5yI3n1838tKIJm967IUmGdckN/RYGPjJxvZ+muXN2/rv23+9j3LVq9vQcsYqRQop
vrWP+hvGGJvOGJ2NYBDB+4AUrPPdeX9stolwyAcYvyCZ8AilPIovm4s2poA+fuQX
D78c8JSfpse32oc93dy4bUz3mRFKTeufstrWEuzqXI691mthF2G9EpA0R3hlbqv+
GiUnNcZVOnOuCt/47GnpWVKsyv91l3CkGq3bV1GSUi8a/1PnyFxHQxQI/qgbkLXs
NuswRupSeLDQKRgiDLgWF/BpdHEp4dpFFWXm00KWlgxeGSQnKat9bpW/d5OgnhA=
=mv3H
-----END PGP SIGNATURE-----
Backmerge tag 'v4.13-rc2' into drm-next
Linux 4.13-rc2
This is required for drm-misc fixing.
We need to hold the srcu lock when accessing memory slots
during migration
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v2.0.14 (GNU/Linux)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=PjH2
-----END PGP SIGNATURE-----
Merge tag 'kvm-s390-master-4.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD
KVM: s390: fixup missing srcu lock
We need to hold the srcu lock when accessing memory slots
during migration
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Run kvm-unit-tests/eventinj.flat in L1 w/ ept=0 on both L0 and L1:
Before NMI IRET test
Sending NMI to self
NMI isr running stack 0x461000
Sending nested NMI to self
After nested NMI to self
Nested NMI isr running rip=40038e
After iret
After NMI to self
FAIL: NMI
Commit 4c4a6f790e (KVM: nVMX: track NMI blocking state separately
for each VMCS) tracks NMI blocking state separately for vmcs01 and
vmcs02. However it is not enough:
- The L2 (kvm-unit-tests/eventinj.flat) generates NMI that will fault
on IRET, so the L2 can generate #PF which can be intercepted by L0.
- L0 walks L1's guest page table and sees the mapping is invalid, it
resumes the L1 guest and injects the #PF into L1. At this point the
vmcs02 has nmi_known_unmasked=true.
- L1 sets set bit 3 (blocking by NMI) in the interruptibility-state field
of vmcs12 (and fixes the shadow page table) before resuming L2 guest.
- L1 executes VMRESUME to resume L2, causing a vmexit to L0
- during VMRESUME emulation, prepare_vmcs02 sets bit 3 in the
interruptibility-state field of vmcs02, but nmi_known_unmasked is
still true.
- L2 immediately exits to L0 with another page fault, because L0 still has
not updated the NGVA->HPA page tables. However, nmi_known_unmasked is
true so vmx_recover_nmi_blocking does not do anything.
The fix is to update nmi_known_unmasked when preparing vmcs02 from vmcs12.
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The PI vector for L0 and L1 must be different. If dest vcpu0
is in guest mode while vcpu1 is delivering a non-nested PI to
vcpu0, there wont't be any vmexit so that the non-nested interrupt
will be delayed.
Signed-off-by: Wincy Van <fanwenyi0529@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
We are using the same vector for nested/non-nested posted
interrupts delivery, this may cause interrupts latency in
L1 since we can't kick the L2 vcpu out of vmx-nonroot mode.
This patch introduces a new vector which is only for nested
posted interrupts to solve the problems above.
Signed-off-by: Wincy Van <fanwenyi0529@gmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This reverts the change of commit f85c758dbe,
as the behavior it modified was intended.
The VM is running in 32-bit PAE mode, and Table 4-7 of the Intel manual
says:
Table 4-7. Use of CR3 with PAE Paging
Bit Position(s) Contents
4:0 Ignored
31:5 Physical address of the 32-Byte aligned
page-directory-pointer table used for linear-address
translation
63:32 Ignored (these bits exist only on processors supporting
the Intel-64 architecture)
To placate the static checker, write the mask explicitly as an
unsigned long constant instead of using a 32-bit unsigned constant.
Cc: Dan Carpenter <dan.carpenter@oracle.com>
Fixes: f85c758dbe
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
write_sysreg() may misparse the value argument because it is used
without parentheses to protect it.
This patch adds the ( ) in order to avoid any surprises.
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Dave Martin <Dave.Martin@arm.com>
[will: same change to write_sysreg_s]
Signed-off-by: Will Deacon <will.deacon@arm.com>
In commit efe0160cfd ("powerpc/64: Linker on-demand sfpr functions
for modules"), we added an ld version check early in the powerpc
top-level Makefile.
Because the Makefile runs before the kernel config is setup, the
checks for CONFIG_CPU_LITTLE_ENDIAN etc. all take the default case. So
we end up configuring ld for 32-bit big endian.
That would be OK, except that for historical (or perhaps no) reason,
we use 'override LD' to add the endian flags to the LD variable
itself, rather than the normal approach of adding them to LDFLAGS.
The end result is that when we check the ld version we run it as:
$(CROSS_COMPILE)ld -EB -m elf32ppc --version
This often works, unless you are using a 64-bit only and/or little
endian only, toolchain. In which case you see something like:
$ make defconfig
powerpc64le-linux-ld: unrecognised emulation mode: elf32ppc
Supported emulations: elf64lppc elf32lppc elf32lppclinux elf32lppcsim
/bin/sh: 1: [: -ge: unexpected operator
The proper fix is to stop using 'override LD', but that will require a
fair bit of testing. Instead we can fix it for now just by reordering
the Makefile to do the version check earlier.
Fixes: efe0160cfd ("powerpc/64: Linker on-demand sfpr functions for modules")
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
As for commit 68baf692c4 ("powerpc/pseries: Fix of_node_put()
underflow during DLPAR remove"), the call to of_node_put() must be
removed from pSeries_reconfig_remove_node().
dlpar_detach_node() and pSeries_reconfig_remove_node() both call
of_detach_node(), and thus the node should not be released in both
cases.
Fixes: 0829f6d1f6 ("of: device_node kobject lifecycle fixes")
Cc: stable@vger.kernel.org # v3.15+
Signed-off-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
There's a somewhat architectural issue with Radix MMU and KVM.
When coming out of a guest with AIL (Alternate Interrupt Location, ie,
MMU enabled), we start executing hypervisor code with the PID register
still containing whatever the guest has been using.
The problem is that the CPU can (and will) then start prefetching or
speculatively load from whatever host context has that same PID (if
any), thus bringing translations for that context into the TLB, which
Linux doesn't know about.
This can cause stale translations and subsequent crashes.
Fixing this in a way that is neither racy nor a huge performance
impact is difficult. We could just make the host invalidations always
use broadcast forms but that would hurt single threaded programs for
example.
We chose to fix it instead by partitioning the PID space between guest
and host. This is possible because today Linux only use 19 out of the
20 bits of PID space, so existing guests will work if we make the host
use the top half of the 20 bits space.
We additionally add support for a property to indicate to Linux the
size of the PID register which will be useful if we eventually have
processors with a larger PID space available.
There is still an issue with malicious guests purposefully setting the
PID register to a value in the hosts PID range. Hopefully future HW
can prevent that, but in the meantime, we handle it with a pair of
kludges:
- On the way out of a guest, before we clear the current VCPU in the
PACA, we check the PID and if it's outside of the permitted range
we flush the TLB for that PID.
- When context switching, if the mm is "new" on that CPU (the
corresponding bit was set for the first time in the mm cpumask), we
check if any sibling thread is in KVM (has a non-NULL VCPU pointer
in the PACA). If that is the case, we also flush the PID for that
CPU (core).
This second part is needed to handle the case where a process is
migrated (or starts a new pthread) on a sibling thread of the CPU
coming out of KVM, as there's a window where stale translations can
exist before we detect it and flush them out.
A future optimization could be added by keeping track of whether the
PID has ever been used and avoid doing that for completely fresh PIDs.
We could similarily mark PIDs that have been the subject of a global
invalidation as "fresh". But for now this will do.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
[mpe: Rework the asm to build with CONFIG_PPC_RADIX_MMU=n, drop
unneeded include of kvm_book3s_asm.h]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
- split the global dma coherent pool from the per-device pool.
This fixes a regression in the earlier 4.13 pull requests where the
global pool would override a per-device CMA pool. (Vladimir Murzin).
-----BEGIN PGP SIGNATURE-----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=fJWP
-----END PGP SIGNATURE-----
Merge tag 'dma-mapping-4.13-2' of git://git.infradead.org/users/hch/dma-mapping
Pull dma mapping fixes from Christoph Hellwig:
"split the global dma coherent pool from the per-device pool.
This fixes a regression in the earlier 4.13 pull requests where the
global pool would override a per-device CMA pool (Vladimir Murzin)"
* tag 'dma-mapping-4.13-2' of git://git.infradead.org/users/hch/dma-mapping:
ARM: NOMMU: Wire-up default DMA interface
dma-coherent: introduce interface for default DMA pool
It's always bothered me that we only disable preemption in
copy_user_page around the call to flush_dcache_page_asm.
This patch extends this to after the copy.
Signed-off-by: John David Anglin <dave.anglin@bell.net>
Cc: stable@vger.kernel.org # 4.9+
Signed-off-by: Helge Deller <deller@gmx.de>
Helge noticed that we flush the TLB page in flush_cache_page but not in
flush_cache_range or flush_cache_mm.
For a long time, we have had random segmentation faults building
packages on machines with PA8800/8900 processors. These machines only
support equivalent aliases. We don't see these faults on machines that
don't require strict coherency. So, it appears TLB speculation
sometimes leads to cache corruption on machines that require coherency.
This patch adds TLB flushes to flush_cache_range and flush_cache_mm when
coherency is required. We only flush the TLB in flush_cache_page when
coherency is required.
The patch also optimizes flush_cache_range. It turns out we always have
the right context to use flush_user_dcache_range_asm and
flush_user_icache_range_asm.
The patch has been tested for some time on rp3440, rp3410 and A500-44.
It's been boot tested on c8000. No random segmentation faults were
observed during testing.
Signed-off-by: John David Anglin <dave.anglin@bell.net>
Cc: stable@vger.kernel.org # 4.9+
Signed-off-by: Helge Deller <deller@gmx.de>
Some machines can't power off the machine, so disable the lockup detectors to
avoid this watchdog BUG to show up every few seconds:
watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [systemd-shutdow:1]
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org # 4.9+
