arch/x86 doesn't care (so far), but as Pratyush Anand pointed
out other architectures might want why arch_uretprobe_is_alive()
was called and use different checks depending on the context.
Add the new argument to distinguish 2 callers.
Tested-by: Pratyush Anand <panand@redhat.com>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Acked-by: Anton Arapov <arapov@gmail.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20150721134026.GA4779@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Add the x86 specific version of arch_uretprobe_is_alive()
helper. It returns true if the stack frame mangled by
prepare_uretprobe() is still on stack. So if it returns false,
we know that the probed function has already returned.
We add the new return_instance->stack member and change the
generic code to initialize it in prepare_uretprobe, but it
should be equally useful for other architectures.
TODO: this assumes that the probed application can't use
multiple stacks (say sigaltstack). We will try to improve
this logic later.
Tested-by: Pratyush Anand <panand@redhat.com>
Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Acked-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com>
Acked-by: Anton Arapov <arapov@gmail.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/20150721134018.GA4766@redhat.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull perf fix from Thomas Gleixner:
"A single fix for the intel cqm perf facility to prevent IPIs from
interrupt context"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf/x86/intel/cqm: Return cached counter value from IRQ context
Pull x86 fixes from Thomas Gleixner:
"This update contains:
- the manual revert of the SYSCALL32 changes which caused a
regression
- a fix for the MPX vma handling
- three fixes for the ioremap 'is ram' checks.
- PAT warning fixes
- a trivial fix for the size calculation of TLB tracepoints
- handle old EFI structures gracefully
This also contains a PAT fix from Jan plus a revert thereof. Toshi
explained why the code is correct"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/mm/pat: Revert 'Adjust default caching mode translation tables'
x86/asm/entry/32: Revert 'Do not use R9 in SYSCALL32' commit
x86/mm: Fix newly introduced printk format warnings
mm: Fix bugs in region_is_ram()
x86/mm: Remove region_is_ram() call from ioremap
x86/mm: Move warning from __ioremap_check_ram() to the call site
x86/mm/pat, drivers/media/ivtv: Move the PAT warning and replace WARN() with pr_warn()
x86/mm/pat, drivers/infiniband/ipath: Replace WARN() with pr_warn()
x86/mm/pat: Adjust default caching mode translation tables
x86/fpu: Disable dependent CPU features on "noxsave"
x86/mpx: Do not set ->vm_ops on MPX VMAs
x86/mm: Add parenthesis for TLB tracepoint size calculation
efi: Handle memory error structures produced based on old versions of standard
Toshi explains:
"No, the default values need to be set to the fallback types,
i.e. minimal supported mode. For WC and WT, UC is the fallback type.
When PAT is disabled, pat_init() does update the tables below to
enable WT per the default BIOS setup. However, when PAT is enabled,
but CPU has PAT -errata, WT falls back to UC per the default values."
Revert: ca1fec58bc 'x86/mm/pat: Adjust default caching mode translation tables'
Requested-by: Toshi Kani <toshi.kani@hp.com>
Cc: Jan Beulich <jbeulich@suse.de>
Link: http://lkml.kernel.org/r/1437577776.3214.252.camel@hp.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Here are a number of small serial and tty fixes for reported issues.
All have been in linux-next successfully.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Merge tag 'tty-4.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty
Pull tty/serial driver fixes from Greg KH:
"Here are a number of small serial and tty fixes for reported issues.
All have been in linux-next successfully"
* tag 'tty-4.2-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty:
tty: vt: Fix !TASK_RUNNING diagnostic warning from paste_selection()
serial: core: Fix crashes while echoing when closing
m32r: Add ioreadXX/iowriteXX big-endian mmio accessors
Revert "serial: imx: initialized DMA w/o HW flow enabled"
sc16is7xx: fix FIFO address of secondary UART
sc16is7xx: fix Kconfig dependencies
serial: etraxfs-uart: Fix release etraxfs_uart_ports
tty/vt: Fix the memory leak in visual_init
serial: amba-pl011: Fix devm_ioremap_resource return value check
n_tty: signal and flush atomically
- Fix a reference inbalance issue for power_ro_lock_show() sysfs handler
MMC host:
- omap_hsmmc: Fix IRQ errorhandling for CD, DTO, and CRC
- sdhci: Prevent a kernel panic while using DMA
- mtk-sd: Let it depend on HAS_DMA to prevent build errors
- sdhci-esdhc: Make 8BIT bus work
- sdhci-esdhc-imx: Fix some regressions for DT based platforms
- sdhci-pxav3: Fix a regression for DT based platforms
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Merge tag 'mmc-4.2-rc3' of git://git.linaro.org/people/ulf.hansson/mmc
Pull MMC fixes from Ulf Hansson:
"Here are some mmc fixes intended for v4.2 rc4.
Note, most of the changes are for the sdhci-esdhc-imx controller,
which also required us to modify some related DTS files. Those
changes have been acked by the SoC maintainer.
MMC core:
- Fix a reference inbalance issue for power_ro_lock_show() sysfs handler
MMC host:
- omap_hsmmc: Fix IRQ errorhandling for CD, DTO, and CRC
- sdhci: Prevent a kernel panic while using DMA
- mtk-sd: Let it depend on HAS_DMA to prevent build errors
- sdhci-esdhc: Make 8BIT bus work
- sdhci-esdhc-imx: Fix some regressions for DT based platforms
- sdhci-pxav3: Fix a regression for DT based platforms"
* tag 'mmc-4.2-rc3' of git://git.linaro.org/people/ulf.hansson/mmc:
mmc: sdhci-pxav3: fix platform_data is not initialized
dts: mmc: fsl-imx-esdhc: remove fsl,cd-controller support
mmc: sdhci-esdhc-imx: clear f_max in boarddata
mmc: sdhci-esdhc-imx: remove duplicated dts parsing
mmc: sdhci: make max-frequency property in device tree work
mmc: sdhci-esdhc-imx: move all non dt probe code into one function
mmc: sdhci-esdhc-imx: fix cd regression for dt platform
dts: imx7: fix sd card gpio polarity specified in device tree
dts: imx25: fix sd card gpio polarity specified in device tree
dts: imx6: fix sd card gpio polarity specified in device tree
dts: imx53: fix sd card gpio polarity specified in device tree
dts: imx51: fix sd card gpio polarity specified in device tree
mmc: sdhci-esdhc: Make 8BIT bus work
mmc: block: Add missing mmc_blk_put() in power_ro_lock_show()
mmc: MMC_MTK should depend on HAS_DMA
mmc: sdhci check parameters before call dma_free_coherent
mmc: omap_hsmmc: Handle BADA, DEB and CEB interrupts
mmc: omap_hsmmc: Fix DTO and DCRC handling
Pull arch/tile bugfix from Chris Metcalf:
"This fixes a bug in freeing the initramfs memory"
* 'stable' of git://git.kernel.org/pub/scm/linux/kernel/git/cmetcalf/linux-tile:
tile: use free_bootmem_late() for initrd
This change reverts most of commit 53e9accf0f 'Do not use R9 in
SYSCALL32'. I don't yet understand how, but code in that commit
sometimes fails to preserve EBP.
See https://bugzilla.kernel.org/show_bug.cgi?id=101061
"Problems while executing 32-bit code on AMD64"
Reported-and-tested-by: Krzysztof A. Sobiecki <sobkas@gmail.com>
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Alexei Starovoitov <ast@plumgrid.com>
Cc: Will Drewry <wad@chromium.org>
Cc: Kees Cook <keescook@chromium.org>
CC: x86@kernel.org
Link: http://lkml.kernel.org/r/1437740203-11552-1-git-send-email-dvlasenk@redhat.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
cd-gpios polarity should be changed to GPIO_ACTIVE_LOW and wp-gpios
should be changed to GPIO_ACTIVE_HIGH.
Otherwise, the SD may not work properly due to wrong polarity inversion
specified in DT after switch to common parsing function mmc_of_parse().
Signed-off-by: Dong Aisheng <aisheng.dong@freescale.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
cd-gpios polarity should be changed to GPIO_ACTIVE_LOW and wp-gpios
should be changed to GPIO_ACTIVE_HIGH.
Otherwise, the SD may not work properly due to wrong polarity inversion
specified in DT after switch to common parsing function mmc_of_parse().
Signed-off-by: Dong Aisheng <aisheng.dong@freescale.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
cd-gpios polarity should be changed to GPIO_ACTIVE_LOW and wp-gpios
should be changed to GPIO_ACTIVE_HIGH.
Otherwise, the SD may not work properly due to wrong polarity inversion
specified in DT after switch to common parsing function mmc_of_parse().
Signed-off-by: Dong Aisheng <aisheng.dong@freescale.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
cd-gpios polarity should be changed to GPIO_ACTIVE_LOW and wp-gpios
should be changed to GPIO_ACTIVE_HIGH.
Otherwise, the SD may not work properly due to wrong polarity inversion
specified in DT after switch to common parsing function mmc_of_parse().
Signed-off-by: Dong Aisheng <aisheng.dong@freescale.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
cd-gpios polarity should be changed to GPIO_ACTIVE_LOW and wp-gpios
should be changed to GPIO_ACTIVE_HIGH.
Otherwise, the SD may not work properly due to wrong polarity inversion
specified in DT after switch to common parsing function mmc_of_parse().
Signed-off-by: Dong Aisheng <aisheng.dong@freescale.com>
Acked-by: Shawn Guo <shawnguo@kernel.org>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
commit c627f2ceb6 ("serial: 8250: Add support for big-endian MMIO accesses")
added support for 32-bit big-endian mmio to the 8250 driver. Support for
ioreadXXbe/iowriteXXbe io accessors was missing from m32r arch, which caused
build errors.
Add trivial macro mmio accessors.
Reported-by: Fengguang Wu <fengguang.wu@intel.com>
Cc: Kevin Cernekee <cernekee@gmail.com>
Signed-off-by: Peter Hurley <peter@hurleysoftware.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
We were previously using free_bootmem() and just getting lucky
that nothing too bad happened.
Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>
Cc: stable@vger.kernel.org
Make them clearly architecture-dependent; the capability is valid for
all architectures, but the argument is not.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
OVMF depends on WB to boot fast, because it only clears caches after
it has set up MTRRs---which is too late.
Let's do writeback if CR0.CD is set to make it happy, similar to what
SVM is already doing.
Signed-off-by: Xiao Guangrong <guangrong.xiao@intel.com>
Tested-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
The logic of the disabled_quirks field usually results in a double
negation. Wrap it in a simple function that checks the bit and
negates it.
Based on a patch from Xiao Guangrong.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
kvm_mtrr_get_guest_memory_type never returns -1 which is implied
in the current code since if @type = -1 (means no MTRR contains the
range), iter.partial_map must be true
Simplify the code to indicate this fact
Signed-off-by: Xiao Guangrong <guangrong.xiao@intel.com>
Tested-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Currently code uses default memory type if MTRR is fully disabled,
fix it by using UC instead.
Signed-off-by: Xiao Guangrong <guangrong.xiao@intel.com>
Tested-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Pull networking fixes from David Miller:
1) Don't use shared bluetooth antenna in iwlwifi driver for management
frames, from Emmanuel Grumbach.
2) Fix device ID check in ath9k driver, from Felix Fietkau.
3) Off by one in xen-netback BUG checks, from Dan Carpenter.
4) Fix IFLA_VF_PORT netlink attribute validation, from Daniel Borkmann.
5) Fix races in setting peeked bit flag in SKBs during datagram
receive. If it's shared we have to clone it otherwise the value can
easily be corrupted. Fix from Herbert Xu.
6) Revert fec clock handling change, causes regressions. From Fabio
Estevam.
7) Fix use after free in fq_codel and sfq packet schedulers, from WANG
Cong.
8) ipvlan bug fixes (memory leaks, missing rcu_dereference_bh, etc.)
from WANG Cong and Konstantin Khlebnikov.
9) Memory leak in act_bpf packet action, from Alexei Starovoitov.
10) ARM bpf JIT bug fixes from Nicolas Schichan.
11) Fix backwards compat of ANY_LAYOUT in virtio_net driver, from
Michael S Tsirkin.
12) Destruction of bond with different ARP header types not handled
correctly, fix from Nikolay Aleksandrov.
13) Revert GRO receive support in ipv6 SIT tunnel driver, causes
regressions because the GRO packets created cannot be processed
properly on the GSO side if we forward the frame. From Herbert Xu.
14) TCCR update race and other fixes to ravb driver from Sergei
Shtylyov.
15) Fix SKB leaks in caif_queue_rcv_skb(), from Eric Dumazet.
16) Fix panics on packet scheduler filter replace, from Daniel Borkmann.
17) Make sure AF_PACKET sees properly IP headers in defragmented frames
(via PACKET_FANOUT_FLAG_DEFRAG option), from Edward Hyunkoo Jee.
18) AF_NETLINK cannot hold mutex in RCU callback, fix from Florian
Westphal.
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (84 commits)
ravb: fix ring memory allocation
net: phy: dp83867: Fix warning check for setting the internal delay
openvswitch: allocate nr_node_ids flow_stats instead of num_possible_nodes
netlink: don't hold mutex in rcu callback when releasing mmapd ring
ARM: net: fix vlan access instructions in ARM JIT.
ARM: net: handle negative offsets in BPF JIT.
ARM: net: fix condition for load_order > 0 when translating load instructions.
tcp: suppress a division by zero warning
drivers: net: cpsw: remove tx event processing in rx napi poll
inet: frags: fix defragmented packet's IP header for af_packet
net: mvneta: fix refilling for Rx DMA buffers
stmmac: fix setting of driver data in stmmac_dvr_probe
sched: cls_flow: fix panic on filter replace
sched: cls_flower: fix panic on filter replace
sched: cls_bpf: fix panic on filter replace
net/mdio: fix mdio_bus_match for c45 PHY
net: ratelimit warnings about dst entry refcount underflow or overflow
caif: fix leaks and race in caif_queue_rcv_skb()
qmi_wwan: add the second QMI/network interface for Sierra Wireless MC7305/MC7355
ravb: fix race updating TCCR
...
task_struct and the asm offsets becoming too large for the AArch64 ISA
- preparatory patch for moving irq_data struct members (applied now to
reduce dependency for the next merging window)
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Merge tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux
Pull ARM64 fixes from Catalin Marinas:
- arm64 build fix following the move of the thread_struct to the end of
task_struct and the asm offsets becoming too large for the AArch64
ISA
- preparatory patch for moving irq_data struct members (applied now to
reduce dependency for the next merging window)
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
ARM64/irq: Use access helper irq_data_get_affinity_mask()
arm64: switch_to: calculate cpu context pointer using separate register
__ioremap_caller() calls region_is_ram() to walk through the
iomem_resource table to check if a target range is in RAM, which was
added to improve the lookup performance over page_is_ram() (commit
906e36c5c7 "x86: use optimized ioresource lookup in ioremap
function"). page_is_ram() was no longer used when this change was
added, though.
__ioremap_caller() then calls walk_system_ram_range(), which had
replaced page_is_ram() to improve the lookup performance (commit
c81c8a1eee "x86, ioremap: Speed up check for RAM pages").
Since both checks walk through the same iomem_resource table for
the same purpose, there is no need to call both functions.
Aside of that walk_system_ram_range() is the only useful check at the
moment because region_is_ram() always returns -1 due to an
implementation bug. That bug in region_is_ram() cannot be fixed
without breaking existing ioremap callers, which rely on the subtle
difference of walk_system_ram_range() versus non page aligned ranges.
Once these offending callers are fixed we can use region_is_ram() and
remove walk_system_ram_range().
[ tglx: Massaged changelog ]
Signed-off-by: Toshi Kani <toshi.kani@hp.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Cc: Roland Dreier <roland@purestorage.com>
Cc: Mike Travis <travis@sgi.com>
Cc: Luis R. Rodriguez <mcgrof@suse.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: linux-mm@kvack.org
Link: http://lkml.kernel.org/r/1437088996-28511-3-git-send-email-toshi.kani@hp.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
__ioremap_check_ram() has a WARN_ONCE() which is emitted when the
given pfn range is not RAM. The warning is bogus in two aspects:
- it never triggers since walk_system_ram_range() only calls
__ioremap_check_ram() for RAM ranges.
- the warning message is wrong as it says: "ioremap on RAM' after it
established that the pfn range is not RAM.
Move the WARN_ONCE() to __ioremap_caller(), and update the message to
include the address range so we get an actual warning when something
tries to ioremap system RAM.
[ tglx: Massaged changelog ]
Signed-off-by: Toshi Kani <toshi.kani@hp.com>
Reviewed-by: Dan Williams <dan.j.williams@intel.com>
Cc: Roland Dreier <roland@purestorage.com>
Cc: Luis R. Rodriguez <mcgrof@suse.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: linux-mm@kvack.org
Link: http://lkml.kernel.org/r/1437088996-28511-2-git-send-email-toshi.kani@hp.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This is a preparatory patch for moving irq_data struct members.
Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Reviewed-by: Hanjun Guo <hanjun.guo@linaro.org>
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Commit 0c8c0f03e3 ("x86/fpu, sched: Dynamically allocate 'struct fpu'")
moved the thread_struct to the bottom of task_struct. As a result, the
offset is now too large to be used in an immediate add on arm64 with
some kernel configs:
arch/arm64/kernel/entry.S: Assembler messages:
arch/arm64/kernel/entry.S:588: Error: immediate out of range
arch/arm64/kernel/entry.S:597: Error: immediate out of range
This patch calculates the offset using an additional register instead of
an immediate offset.
Fixes: 0c8c0f03e3 ("x86/fpu, sched: Dynamically allocate 'struct fpu'")
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Olof Johansson <olof@lixom.net>
Cc: Ingo Molnar <mingo@kernel.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This makes BPF_ANC | SKF_AD_VLAN_TAG and BPF_ANC | SKF_AD_VLAN_TAG_PRESENT
have the same behaviour as the in kernel VM and makes the test_bpf LD_VLAN_TAG
and LD_VLAN_TAG_PRESENT tests pass.
Signed-off-by: Nicolas Schichan <nschichan@freebox.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Previously, the JIT would reject negative offsets known during code
generation and mishandle negative offsets provided at runtime.
Fix that by calling bpf_internal_load_pointer_neg_helper()
appropriately in the jit_get_skb_{b,h,w} slow path helpers and by forcing
the execution flow to the slow path helpers when the offset is
negative.
Signed-off-by: Nicolas Schichan <nschichan@freebox.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
To check whether the load should take the fast path or not, the code
would check that (r_skb_hlen - load_order) is greater than the offset
of the access using an "Unsigned higher or same" condition. For
halfword accesses and an skb length of 1 at offset 0, that test is
valid, as we end up comparing 0xffffffff(-1) and 0, so the fast path
is taken and the filter allows the load to wrongly succeed. A similar
issue exists for word loads at offset 0 and an skb length of less than
4.
Fix that by using the condition "Signed greater than or equal"
condition for the fast path code for load orders greater than 0.
Signed-off-by: Nicolas Schichan <nschichan@freebox.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
Make WT really mean WT (rather than UC).
I can't see why commit 9cd25aac1f ("x86/mm/pat: Emulate PAT when
it is disabled") didn't make this to match its changes to
pat_init().
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@suse.de>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Toshi Kani <toshi.kani@hp.com>
Link: http://lkml.kernel.org/r/55ACC3660200007800092E62@mail.emea.novell.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Complete the set of dependent features that need disabling at
once: XSAVEC, AVX-512 and all currently known to the kernel
extensions to it, as well as MPX need to be disabled too.
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/55ACC40D0200007800092E6C@mail.emea.novell.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
MPX setups private anonymous mapping, but uses vma->vm_ops too.
This can confuse core VM, as it relies on vm->vm_ops to
distinguish file VMAs from anonymous.
As result we will get SIGBUS, because handle_pte_fault() thinks
it's file VMA without vm_ops->fault and it doesn't know how to
handle the situation properly.
Let's fix that by not setting ->vm_ops.
We don't really need ->vm_ops here: MPX VMA can be detected with
VM_MPX flag. And vma_merge() will not merge MPX VMA with non-MPX
VMA, because ->vm_flags won't match.
The only thing left is name of VMA. I'm not sure if it's part of
ABI, or we can just drop it. The patch keep it by providing
arch_vma_name() on x86.
Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc: <stable@vger.kernel.org> # Fixes: 6b7339f4 (mm: avoid setting up anonymous pages into file mapping)
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: dave@sr71.net
Link: http://lkml.kernel.org/r/20150720212958.305CC3E9@viggo.jf.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
flush_tlb_info->flush_start/end are both normal virtual
addresses. When calculating 'nr_pages' (only used for the
tracepoint), I neglected to put parenthesis in.
Thanks to David Koufaty for pointing this out.
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: dave@sr71.net
Cc: <stable@vger.kernel.org>
Link: http://lkml.kernel.org/r/20150720230153.9E834081@viggo.jf.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Pull s390 fix from Martin Schwidefsky:
"Fast path fix for the thread_struct breakage"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
s390: adapt entry.S to the move of thread_struct
git commit 0c8c0f03e3
"x86/fpu, sched: Dynamically allocate 'struct fpu'"
moved the thread_struct to the end of the task_struct.
This causes some of the offsets used in entry.S to overflow their
instruction operand field. To fix this use aghi to create a
dedicated pointer for the thread_struct.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Migrate avr32 driver to the new 'set-state' interface provided by
clockevents core, the earlier 'set-mode' interface is marked obsolete
now.
This also enables us to implement callbacks for new states of clockevent
devices, for example: ONESHOT_STOPPED.
We want to call cpu_idle_poll_ctrl() in shutdown only if we were in
oneshot or resume state earlier. Create another variable to save this
information and check that in shutdown callback.
Cc: Haavard Skinnemoen <hskinnemoen@gmail.com>
Cc: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org>
Acked-by: Hans-Christian Egtvedt <egtvedt@samfundet.no>
Pull MIPS fixes from Ralf Baechle:
"Another round of MIPS fixes for 4.2.
Things are looking quite decent at this stage but the recent work on
the FPU support took its toll:
- fix an incorrect overly restrictive ifdef
- select O32 64-bit FP support for O32 binary compatibility
- remove workarounds for Sibyte SB1250 Pass1 parts. There are rare
fixing the workarounds is not worth the effort.
- patch up an outdated and now incorrect comment"
* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus:
MIPS: fpu.h: Allow 64-bit FPU on a 64-bit MIPS R6 CPU
MIPS: SB1: Remove support for Pass 1 parts.
MIPS: Require O32 FP64 support for MIPS64 with O32 compat
MIPS: asm-offset.c: Patch up various comments refering to the old filename.
Pull parisc fix from Helge Deller:
"A memory leak fix from Christophe Jaillet which was introduced with
kernel 4.0 and which leads to kernel crashes on parisc after 1-3 days"
* 'parisc-4.2-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: mm: Fix a memory leak related to pmd not attached to the pgd
By far most of the fixes here are updates to DTS files to deal with some
mostly minor bugs.
There's also a fix to deal with non-PM kernel configs on i.MX, a
regression fix for ethernet on PXA platforms and a dependency fix for OMAP.
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Merge tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC fixes from Olof Johansson:
"By far most of the fixes here are updates to DTS files to deal with
some mostly minor bugs.
There's also a fix to deal with non-PM kernel configs on i.MX, a
regression fix for ethernet on PXA platforms and a dependency fix for
OMAP"
* tag 'armsoc-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
ARM: keystone: dts: rename pcie nodes to help override status
ARM: keystone: dts: fix dt bindings for PCIe
ARM: pxa: fix dm9000 platform data regression
ARM: dts: Correct audio input route & set mic bias for am335x-pepper
ARM: OMAP2+: Add HAVE_ARM_SCU for AM43XX
MAINTAINERS: digicolor: add dts files
ARM: ux500: fix MMC/SD card regression
ARM: ux500: define serial port aliases
ARM: dts: OMAP5: Add #iommu-cells property to IOMMUs
ARM: dts: OMAP4: Add #iommu-cells property to IOMMUs
ARM: dts: Fix frequency scaling on Gumstix Pepper
ARM: dts: configure regulators for Gumstix Pepper
ARM: dts: omap3: overo: Update LCD panel names
ARM: dts: cros-ec-keyboard: Add support for some Japanese keys
ARM: imx6: gpc: always enable PU domain if CONFIG_PM is not set
ARM: dts: imx53-qsb: fix TVE entry
ARM: dts: mx23: fix iio-hwmon support
ARM: dts: imx27: Adjust the GPT compatible string
ARM: socfpga: dts: Fix entries order
ARM: socfpga: dts: Fix adxl34x formating and compatible string
Commit 6134d94923 ("MIPS: asm: fpu: Allow 64-bit FPU on MIPS32 R6")
added support for 64-bit FPU on a 32-bit MIPS R6 processor but it missed
the 64-bit CPU case leading to FPU failures when requesting FR=1 mode
(which is always the case for MIPS R6 userland) when running a 32-bit
kernel on a 64-bit CPU. We also fix the MIPS R2 case.
Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>
Fixes: 6134d94923 ("MIPS: asm: fpu: Allow 64-bit FPU on MIPS32 R6")
Reviewed-by: Paul Burton <paul.burton@imgtec.com>
Cc: <stable@vger.kernel.org> # 4.0+
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/10734/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Commit 0e0da48dee ("parisc: mm: don't count preallocated pmds")
introduced a memory leak.
After this commit, the 'return' statement in pmd_free is executed in all
cases. Even for pmd that are not attached to the pgd. So 'free_pages'
can never be called anymore, leading to a memory leak.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Acked-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Mikulas Patocka <mpatocka@redhat.com>
Acked-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org # v4.0+
Signed-off-by: Helge Deller <deller@gmx.de>
This single fix reenables ethernet cards for several pxa boards,
broken by regulator addition to dm9000 driver.
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Merge tag 'pxa-fixes-v4.2-rc2' of https://github.com/rjarzmik/linux into fixesD
Merge "pxa fixes for v4.2" from Robert Jarzmik:
ARM: pxa: fixes for v4.2-rc2
This single fix reenables ethernet cards for several pxa boards,
broken by regulator addition to dm9000 driver.
* tag 'pxa-fixes-v4.2-rc2' of https://github.com/rjarzmik/linux:
ARM: pxa: fix dm9000 platform data regression
Pull ARM fixes from Russell King:
"A small set of ARM fixes for -rc3, most of them not far off
one-liners, with the exception of fixing the V7 cache invalidation for
incoming SMP processors which was causing problems for SoCFPGA
devices"
* 'fixes' of git://ftp.arm.linux.org.uk/~rmk/linux-arm:
ARM: fix __virt_to_idmap build error on !MMU
ARM: invalidate L1 before enabling coherency
ARM: 8404/1: dma-mapping: fix off-by-one error in bitmap size check
ARM: 8402/1: perf: Don't use of_node after putting it
ARM: 8400/1: use virt_to_idmap to get phys_reset address
Pull x86 fixes from Ingo Molnar:
"Two families of fixes:
- Fix an FPU context related boot crash on newer x86 hardware with
larger context sizes than what most people test. To fix this
without ugly kludges or extensive reverts we had to touch core task
allocator, to allow x86 to determine the task size dynamically, at
boot time.
I've tested it on a number of x86 platforms, and I cross-built it
to a handful of architectures:
(warns) (warns)
testing x86-64: -git: pass ( 0), -tip: pass ( 0)
testing x86-32: -git: pass ( 0), -tip: pass ( 0)
testing arm: -git: pass ( 1359), -tip: pass ( 1359)
testing cris: -git: pass ( 1031), -tip: pass ( 1031)
testing m32r: -git: pass ( 1135), -tip: pass ( 1135)
testing m68k: -git: pass ( 1471), -tip: pass ( 1471)
testing mips: -git: pass ( 1162), -tip: pass ( 1162)
testing mn10300: -git: pass ( 1058), -tip: pass ( 1058)
testing parisc: -git: pass ( 1846), -tip: pass ( 1846)
testing sparc: -git: pass ( 1185), -tip: pass ( 1185)
... so I hope the cross-arch impact 'none', as intended.
(by Dave Hansen)
- Fix various NMI handling related bugs unearthed by the big asm code
rewrite and generally make the NMI code more robust and more
maintainable while at it. These changes are a bit late in the
cycle, I hope they are still acceptable.
(by Andy Lutomirski)"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/fpu, sched: Introduce CONFIG_ARCH_WANTS_DYNAMIC_TASK_STRUCT and use it on x86
x86/fpu, sched: Dynamically allocate 'struct fpu'
x86/entry/64, x86/nmi/64: Add CONFIG_DEBUG_ENTRY NMI testing code
x86/nmi/64: Make the "NMI executing" variable more consistent
x86/nmi/64: Minor asm simplification
x86/nmi/64: Use DF to avoid userspace RSP confusing nested NMI detection
x86/nmi/64: Reorder nested NMI checks
x86/nmi/64: Improve nested NMI comments
x86/nmi/64: Switch stacks on userspace NMI entry
x86/nmi/64: Remove asm code that saves CR2
x86/nmi: Enable nested do_nmi() handling for 64-bit kernels
Pull perf fixes from Ingo Molnar:
"Mostly tooling fixes, plus a static key fix fixing /sys/devices/cpu/rdpmc"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
perf tools: Really allow to specify custom CC, AR or LD
perf auxtrace: Fix misplaced check for HAVE_SYNC_COMPARE_AND_SWAP_SUPPORT
perf hists browser: Take the --comm, --dsos, etc filters into account
perf symbols: Store if there is a filter in place
x86, perf: Fix static_key bug in load_mm_cr4()
tools: Copy lib/hweight.c from the kernel sources
perf tools: Fix the detached tarball wrt rbtree copy
perf thread_map: Fix the sizeof() calculation for map entries
tools lib: Improve clean target
perf stat: Fix shadow declaration of close
perf tools: Fix lockup using 32-bit compat vdso
Pull irq fixes from Ingo Molnar:
"Misc irq fixes:
- two driver fixes
- a Xen regression fix
- a nested irq thread crash fix"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqchip/gicv3-its: Fix mapping of LPIs to collections
genirq: Prevent resend to interrupts marked IRQ_NESTED_THREAD
genirq: Revert sparse irq locking around __cpu_up() and move it to x86 for now
gpio/davinci: Fix race in installing chained irq handler
Don't burden architectures without dynamic task_struct sizing
with the overhead of dynamic sizing.
Also optimize the x86 code a bit by caching task_struct_size.
Acked-and-Tested-by: Dave Hansen <dave.hansen@linux.intel.com>
Cc: Andy Lutomirski <luto@amacapital.net>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Dave Hansen <dave@sr71.net>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Oleg Nesterov <oleg@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/1437128892-9831-3-git-send-email-mingo@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
