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Merge tag 'v4.16-rc2' into next-general
Sync to Linux 4.16-rc2 for developers to work against.
Pull x86 Kconfig fixes from Thomas Gleixner:
"Three patchlets to correct HIGHMEM64G and CMPXCHG64 dependencies in
Kconfig when CPU selections are explicitely set to M586 or M686"
* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/Kconfig: Explicitly enumerate i686-class CPUs in Kconfig
x86/Kconfig: Exclude i586-class CPUs lacking PAE support from the HIGHMEM64G Kconfig group
x86/Kconfig: Add missing i586-class CPUs to the X86_CMPXCHG64 Kconfig group
Pull perf updates from Thomas Gleixner:
"Perf tool updates and kprobe fixes:
- perf_mmap overwrite mode fixes/overhaul, prep work to get 'perf
top' using it, making it bearable to use it in large core count
systems such as Knights Landing/Mill Intel systems (Kan Liang)
- s/390 now uses syscall.tbl, just like x86-64 to generate the
syscall table id -> string tables used by 'perf trace' (Hendrik
Brueckner)
- Use strtoull() instead of home grown function (Andy Shevchenko)
- Synchronize kernel ABI headers, v4.16-rc1 (Ingo Molnar)
- Document missing 'perf data --force' option (Sangwon Hong)
- Add perf vendor JSON metrics for ARM Cortex-A53 Processor (William
Cohen)
- Improve error handling and error propagation of ftrace based
kprobes so failures when installing kprobes are not silently
ignored and create disfunctional tracepoints"
* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (27 commits)
kprobes: Propagate error from disarm_kprobe_ftrace()
kprobes: Propagate error from arm_kprobe_ftrace()
Revert "tools include s390: Grab a copy of arch/s390/include/uapi/asm/unistd.h"
perf s390: Rework system call table creation by using syscall.tbl
perf s390: Grab a copy of arch/s390/kernel/syscall/syscall.tbl
tools/headers: Synchronize kernel ABI headers, v4.16-rc1
perf test: Fix test trace+probe_libc_inet_pton.sh for s390x
perf data: Document missing --force option
perf tools: Substitute yet another strtoull()
perf top: Check the latency of perf_top__mmap_read()
perf top: Switch default mode to overwrite mode
perf top: Remove lost events checking
perf hists browser: Add parameter to disable lost event warning
perf top: Add overwrite fall back
perf evsel: Expose the perf_missing_features struct
perf top: Check per-event overwrite term
perf mmap: Discard legacy interface for mmap read
perf test: Update mmap read functions for backward-ring-buffer test
perf mmap: Introduce perf_mmap__read_event()
perf mmap: Introduce perf_mmap__read_done()
...
Pull irq updates from Thomas Gleixner:
"A small set of updates mostly for irq chip drivers:
- MIPS GIC fix for spurious, masked interrupts
- fix for a subtle IPI bug in GICv3
- do not probe GICv3 ITSs that are marked as disabled
- multi-MSI support for GICv2m
- various small cleanups"
* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
irqdomain: Re-use DEFINE_SHOW_ATTRIBUTE() macro
irqchip/bcm: Remove hashed address printing
irqchip/gic-v2m: Add PCI Multi-MSI support
irqchip/gic-v3: Ignore disabled ITS nodes
irqchip/gic-v3: Use wmb() instead of smb_wmb() in gic_raise_softirq()
irqchip/gic-v3: Change pr_debug message to pr_devel
irqchip/mips-gic: Avoid spuriously handling masked interrupts
Pull core fix from Thomas Gleixner:
"A small fix which adds the missing for_each_cpu_wrap() stub for the UP
case to avoid build failures"
* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
cpumask: Make for_each_cpu_wrap() available on UP as well
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Merge tag 'for-linus-20180217' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
- NVMe pull request from Keith, with fixes all over the map for nvme.
From various folks.
- Classic polling fix, that avoids a latency issue where we still end
up waiting for an interrupt in some cases. From Nitesh Shetty.
- Comment typo fix from Minwoo Im.
* tag 'for-linus-20180217' of git://git.kernel.dk/linux-block:
block: fix a typo in comment of BLK_MQ_POLL_STATS_BKTS
nvme-rdma: fix sysfs invoked reset_ctrl error flow
nvmet: Change return code of discard command if not supported
nvme-pci: Fix timeouts in connecting state
nvme-pci: Remap CMB SQ entries on every controller reset
nvme: fix the deadlock in nvme_update_formats
blk: optimization for classic polling
nvme: Don't use a stack buffer for keep-alive command
nvme_fc: cleanup io completion
nvme_fc: correct abort race condition on resets
nvme: Fix discard buffer overrun
nvme: delete NVME_CTRL_LIVE --> NVME_CTRL_CONNECTING transition
nvme-rdma: use NVME_CTRL_CONNECTING state to mark init process
nvme: rename NVME_CTRL_RECONNECTING state to NVME_CTRL_CONNECTING
- meson-gx: Revert to earlier tuning process
- bcm2835: Don't overwrite max frequency unconditionally
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Merge tag 'mmc-v4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc
Pull MMC fixes from Ulf Hansson:
- meson-gx: Revert to earlier tuning process
- bcm2835: Don't overwrite max frequency unconditionally
* tag 'mmc-v4.16-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/ulfh/mmc:
mmc: bcm2835: Don't overwrite max frequency unconditionally
Revert "mmc: meson-gx: include tx phase in the tuning process"
* Use the appropriate OOB layout in the VF610 driver
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Merge tag 'mtd/fixes-for-4.16-rc2' of git://git.infradead.org/linux-mtd
Pull mtd fixes from Boris Brezillon:
- add missing dependency to NAND_MARVELL Kconfig entry
- use the appropriate OOB layout in the VF610 driver
* tag 'mtd/fixes-for-4.16-rc2' of git://git.infradead.org/linux-mtd:
mtd: nand: MTD_NAND_MARVELL should depend on HAS_DMA
mtd: nand: vf610: set correct ooblayout
The main attraction is a fix for a bug in the new drmem code, which was causing
an oops on boot on some versions of Qemu.
There's also a fix for XIVE (Power9 interrupt controller) on KVM, as well as a
few other minor fixes.
Thanks to:
Corentin Labbe, Cyril Bur, Cédric Le Goater, Daniel Black, Nathan Fontenot,
Nicholas Piggin.
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Merge tag 'powerpc-4.16-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
"The main attraction is a fix for a bug in the new drmem code, which
was causing an oops on boot on some versions of Qemu.
There's also a fix for XIVE (Power9 interrupt controller) on KVM, as
well as a few other minor fixes.
Thanks to: Corentin Labbe, Cyril Bur, Cédric Le Goater, Daniel Black,
Nathan Fontenot, Nicholas Piggin"
* tag 'powerpc-4.16-3' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/pseries: Check for zero filled ibm,dynamic-memory property
powerpc/pseries: Add empty update_numa_cpu_lookup_table() for NUMA=n
powerpc/powernv: IMC fix out of bounds memory access at shutdown
powerpc/xive: Use hw CPU ids when configuring the CPU queues
powerpc: Expose TSCR via sysfs only on powernv
- Updated the page table accessors to use READ/WRITE_ONCE and prevent
compiler transformation that could lead to an apparent loss of
coherency
- Enabled branch predictor hardening for the Falkor CPU
- Fix interaction between kpti enabling and KASan causing the recursive
page table walking to take a significant time
- Fix some sparse warnings
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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:
"The bulk of this is the pte accessors annotation to READ/WRITE_ONCE
(we tried to avoid pushing this during the merge window to avoid
conflicts)
- Updated the page table accessors to use READ/WRITE_ONCE and prevent
compiler transformation that could lead to an apparent loss of
coherency
- Enabled branch predictor hardening for the Falkor CPU
- Fix interaction between kpti enabling and KASan causing the
recursive page table walking to take a significant time
- Fix some sparse warnings"
* tag 'arm64-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux:
arm64: cputype: Silence Sparse warnings
arm64: mm: Use READ_ONCE/WRITE_ONCE when accessing page tables
arm64: proc: Set PTE_NG for table entries to avoid traversing them twice
arm64: Add missing Falkor part number for branch predictor hardening
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Merge tag 'for-linus-4.16a-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip
Pull xen fixes from Juergen Gross:
- fixes for the Xen pvcalls frontend driver
- fix for booting Xen pv domains
- fix for the xenbus driver user interface
* tag 'for-linus-4.16a-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/xen/tip:
pvcalls-front: wait for other operations to return when release passive sockets
pvcalls-front: introduce a per sock_mapping refcount
x86/xen: Calculate __max_logical_packages on PV domains
xenbus: track caller request id
Passive sockets can have ongoing operations on them, specifically, we
have two wait_event_interruptable calls in pvcalls_front_accept.
Add two wake_up calls in pvcalls_front_release, then wait for the
potential waiters to return and release the sock_mapping refcount.
Signed-off-by: Stefano Stabellini <stefano@aporeto.com>
Acked-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Introduce a per sock_mapping refcount, in addition to the existing
global refcount. Thanks to the sock_mapping refcount, we can safely wait
for it to be 1 in pvcalls_front_release before freeing an active socket,
instead of waiting for the global refcount to be 1.
Signed-off-by: Stefano Stabellini <stefano@aporeto.com>
Acked-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Commit fd8aa9095a ("xen: optimize xenbus driver for multiple concurrent
xenstore accesses") optimized xenbus concurrent accesses but in doing so
broke UABI of /dev/xen/xenbus. Through /dev/xen/xenbus applications are in
charge of xenbus message exchange with the correct header and body. Now,
after the mentioned commit the replies received by application will no
longer have the header req_id echoed back as it was on request (see
specification below for reference), because that particular field is being
overwritten by kernel.
struct xsd_sockmsg
{
uint32_t type; /* XS_??? */
uint32_t req_id;/* Request identifier, echoed in daemon's response. */
uint32_t tx_id; /* Transaction id (0 if not related to a transaction). */
uint32_t len; /* Length of data following this. */
/* Generally followed by nul-terminated string(s). */
};
Before there was only one request at a time so req_id could simply be
forwarded back and forth. To allow simultaneous requests we need a
different req_id for each message thus kernel keeps a monotonic increasing
counter for this field and is written on every request irrespective of
userspace value.
Forwarding again the req_id on userspace requests is not a solution because
we would open the possibility of userspace-generated req_id colliding with
kernel ones. So this patch instead takes another route which is to
artificially keep user req_id while keeping the xenbus logic as is. We do
that by saving the original req_id before xs_send(), use the private kernel
counter as req_id and then once reply comes and was validated, we restore
back the original req_id.
Cc: <stable@vger.kernel.org> # 4.11
Fixes: fd8aa9095a ("xen: optimize xenbus driver for multiple concurrent xenstore accesses")
Reported-by: Bhavesh Davda <bhavesh.davda@oracle.com>
Signed-off-by: Joao Martins <joao.m.martins@oracle.com>
Reviewed-by: Juergen Gross <jgross@suse.com>
Signed-off-by: Juergen Gross <jgross@suse.com>
Sparse makes a fair bit of noise about our MPIDR mask being implicitly
long - let's explicitly describe it as such rather than just relying on
the value forcing automatic promotion.
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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Merge tag 'dma-mapping-4.16-2' of git://git.infradead.org/users/hch/dma-mapping
Pull dma-mapping fixes from Christoph Hellwig:
"A few dma-mapping fixes for the fallout from the changes in rc1"
* tag 'dma-mapping-4.16-2' of git://git.infradead.org/users/hch/dma-mapping:
powerpc/macio: set a proper dma_coherent_mask
dma-mapping: fix a comment typo
dma-direct: comment the dma_direct_free calling convention
dma-direct: mark as is_phys
ia64: fix build failure with CONFIG_SWIOTLB
In many cases, page tables can be accessed concurrently by either another
CPU (due to things like fast gup) or by the hardware page table walker
itself, which may set access/dirty bits. In such cases, it is important
to use READ_ONCE/WRITE_ONCE when accessing page table entries so that
entries cannot be torn, merged or subject to apparent loss of coherence
due to compiler transformations.
Whilst there are some scenarios where this cannot happen (e.g. pinned
kernel mappings for the linear region), the overhead of using READ_ONCE
/WRITE_ONCE everywhere is minimal and makes the code an awful lot easier
to reason about. This patch consistently uses these macros in the arch
code, as well as explicitly namespacing pointers to page table entries
from the entries themselves by using adopting a 'p' suffix for the former
(as is sometimes used elsewhere in the kernel source).
Tested-by: Yury Norov <ynorov@caviumnetworks.com>
Tested-by: Richard Ruigrok <rruigrok@codeaurora.org>
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
We get a warning about some slow configurations in randconfig kernels:
mm/memory.c:83:2: error: #warning Unfortunate NUMA and NUMA Balancing config, growing page-frame for last_cpupid. [-Werror=cpp]
The warning is reasonable by itself, but gets in the way of randconfig
build testing, so I'm hiding it whenever CONFIG_COMPILE_TEST is set.
The warning was added in 2013 in commit 75980e97da ("mm: fold
page->_last_nid into page->flags where possible").
Cc: stable@vger.kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
A few fixes for outstanding MIPS issues:
- An __init section mismatch warning when brcmstb_pm is enabled.
- A regression handling multiple mem=X@Y arguments (4.11).
- A USB Kconfig select warning, and related sparc cleanup (4.16).
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Merge tag 'mips_fixes_4.16_2' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/mips
Pull MIPS fixes from James Hogan:
"A few fixes for outstanding MIPS issues:
- an __init section mismatch warning when brcmstb_pm is enabled
- a regression handling multiple mem=X@Y arguments (4.11)
- a USB Kconfig select warning, and related sparc cleanup (4.16)"
* tag 'mips_fixes_4.16_2' of git://git.kernel.org/pub/scm/linux/kernel/git/jhogan/mips:
sparc,leon: Select USB_UHCI_BIG_ENDIAN_{MMIO,DESC}
usb: Move USB_UHCI_BIG_ENDIAN_* out of USB_SUPPORT
MIPS: Fix incorrect mem=X@Y handling
MIPS: BMIPS: Fix section mismatch warning
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Merge tag 'for-4.16-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
Pull btrfs fixes from David Sterba:
"We have a few assorted fixes, some of them show up during fstests so I
gave them more testing"
* tag 'for-4.16-rc1-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux:
btrfs: Fix use-after-free when cleaning up fs_devs with a single stale device
Btrfs: fix null pointer dereference when replacing missing device
btrfs: remove spurious WARN_ON(ref->count < 0) in find_parent_nodes
btrfs: Ignore errors from btrfs_qgroup_trace_extent_post
Btrfs: fix unexpected -EEXIST when creating new inode
Btrfs: fix use-after-free on root->orphan_block_rsv
Btrfs: fix btrfs_evict_inode to handle abnormal inodes correctly
Btrfs: fix extent state leak from tree log
Btrfs: fix crash due to not cleaning up tree log block's dirty bits
Btrfs: fix deadlock in run_delalloc_nocow
non-zero error with 0). This is particularly important given DM
core's increased use of chained bios.
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Merge tag 'for-4.16/dm-chained-bios-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm
Pull device mapper fix from Mike Snitzer:
"Fix for DM core to properly propagate errors (avoids overriding
non-zero error with 0). This is particularly important given DM core's
increased use of chained bios"
* tag 'for-4.16/dm-chained-bios-fix' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
dm: correctly handle chained bios in dec_pending()
Regression fix in keyboard support for Dell laptops.
Prevent out-of-boundary write in WMI bus driver.
Increase timeout to read functional key status on Lenovo laptops.
The following is an automated git shortlog grouped by driver:
dell-laptop:
- Removed duplicates in DMI whitelist
- fix kbd_get_state's request value
ideapad-laptop:
- Increase timeout to wait for EC answer
wmi:
- fix off-by-one write in wmi_dev_probe()
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Merge tag 'platform-drivers-x86-v4.16-4' of git://git.infradead.org/linux-platform-drivers-x86
Pull x86 platform driver fixes from Andy Shevchenko:
- regression fix in keyboard support for Dell laptops
- prevent out-of-boundary write in WMI bus driver
- increase timeout to read functional key status on Lenovo laptops
* tag 'platform-drivers-x86-v4.16-4' of git://git.infradead.org/linux-platform-drivers-x86:
platform/x86: dell-laptop: Removed duplicates in DMI whitelist
platform/x86: dell-laptop: fix kbd_get_state's request value
platform/x86: ideapad-laptop: Increase timeout to wait for EC answer
platform/x86: wmi: fix off-by-one write in wmi_dev_probe()
A collection of usual suspects:
- A handful USB-audio and HD-audio device-specific quirks
- Some trivial fixes for the new AC97 bus stuff
- Another race fix in ALSA sequencer core
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Merge tag 'sound-4.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound
Pull sound fixes from Takashi Iwai:
"A collection of usual suspects:
- a handful USB-audio and HD-audio device-specific quirks
- some trivial fixes for the new AC97 bus stuff
- another race fix in ALSA sequencer core"
* tag 'sound-4.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound:
ALSA: hda/realtek: PCI quirk for Fujitsu U7x7
ALSA: seq: Fix racy pool initializations
ALSA: usb: add more device quirks for USB DSD devices
ALSA: usb-audio: Fix UAC2 get_ctl request with a RANGE attribute
ALSA: ac97: Fix copy and paste typo in documentation
ALSA: usb-audio: add implicit fb quirk for Behringer UFX1204
ALSA: ac97: kconfig: Remove select of undefined symbol AC97
ALSA: hda/realtek - Enable Thinkpad Dock device for ALC298 platform
ALSA: hda/realtek - Add headset mode support for Dell laptop
ALSA: hda - Fix headset mic detection problem for two Dell machines
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Merge tag 'drm-fixes-for-v4.16-rc2' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
"One nouveau regression fix, one AMD quirk and a full set of i915
fixes.
The i915 fixes are mostly for things caught by their CI system, main
ones being DSI panel fixes and GEM fixes"
* tag 'drm-fixes-for-v4.16-rc2' of git://people.freedesktop.org/~airlied/linux:
drm/nouveau: Make clock gate support conditional
drm/i915: Fix DSI panels with v1 MIPI sequences without a DEASSERT sequence v3
drm/i915: Free memdup-ed DSI VBT data structures on driver_unload
drm/i915: Add intel_bios_cleanup() function
drm/i915/vlv: Add cdclk workaround for DSI
drm/i915/gvt: fix one typo of render_mmio trace
drm/i915/gvt: Support BAR0 8-byte reads/writes
drm/i915/gvt: add 0xe4f0 into gen9 render list
drm/i915/pmu: Fix building without CONFIG_PM
drm/i915/pmu: Fix sleep under atomic in RC6 readout
drm/i915/pmu: Fix PMU enable vs execlists tasklet race
drm/i915: Lock out execlist tasklet while peeking inside for busy-stats
drm/i915/breadcrumbs: Ignore unsubmitted signalers
drm/i915: Don't wake the device up to check if the engine is asleep
drm/i915: Avoid truncation before clamping userspace's priority value
drm/i915/perf: Fix compiler warning for string truncation
drm/i915/perf: Fix compiler warning for string truncation
drm/amdgpu: add new device to use atpx quirk
dec_pending() is given an error status (possibly 0) to be recorded
against a bio. It can be called several times on the one 'struct
dm_io', and it is careful to only assign a non-zero error to
io->status. However when it then assigned io->status to bio->bi_status,
it is not careful and could overwrite a genuine error status with 0.
This can happen when chained bios are in use. If a bio is chained
beneath the bio that this dm_io is handling, the child bio might
complete and set bio->bi_status before the dm_io completes.
This has been possible since chained bios were introduced in 3.14, and
has become a lot easier to trigger with commit 18a25da843 ("dm: ensure
bio submission follows a depth-first tree walk") as that commit caused
dm to start using chained bios itself.
A particular failure mode is that if a bio spans an 'error' target and a
working target, the 'error' fragment will complete instantly and set the
->bi_status, and the other fragment will normally complete a little
later, and will clear ->bi_status.
The fix is simply to only assign io_error to bio->bi_status when
io_error is not zero.
Reported-and-tested-by: Milan Broz <gmazyland@gmail.com>
Cc: stable@vger.kernel.org (v3.14+)
Signed-off-by: NeilBrown <neilb@suse.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
- a MIPS GIC fix for spurious, masked interrupts
- a fix for a subtle IPI bug in GICv3
- do no probe GICv3 ITSs that are marked as disabled
- multi-MSI support for GICv2m
- various cleanups
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Merge tag 'irqchip-4.16-2' of git://git.kernel.org/pub/scm/linux/kernel/git/maz/arm-platforms into irq/urgent
Pull irqchip updates for 4.16-rc2 from Marc Zyngier
- A MIPS GIC fix for spurious, masked interrupts
- A fix for a subtle IPI bug in GICv3
- Do not probe GICv3 ITSs that are marked as disabled
- Multi-MSI support for GICv2m
- Various cleanups
...instead of open coding file operations followed by custom ->open()
callbacks per each attribute.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Since commit ad67b74d24 ("printk: hash addresses printed with %p")
pointers are being hashed when printed. Displaying the virtual memory at
bootup time is not helpful. so delete the prints.
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jaedon Shin <jaedon.shin@gmail.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
We'd never implemented Multi-MSI support with GICv2m, because
it is weird and clunky, and you'd think people would rather use
MSI-X.
Turns out there is still plenty of devices out there that rely
on Multi-MSI. Oh well, let's teach that trick to the v2m widget,
it is not a big deal anyway.
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
On some platforms there's an ITS available but it's not enabled
because reading or writing the registers is denied by the
firmware. In fact, reading or writing them will cause the system
to reset. We could remove the node from DT in such a case, but
it's better to skip nodes that are marked as "disabled" in DT so
that we can describe the hardware that exists and use the status
property to indicate how the firmware has configured things.
Cc: Stuart Yoder <stuyoder@gmail.com>
Cc: Laurentiu Tudor <laurentiu.tudor@nxp.com>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Cc: Rajendra Nayak <rnayak@codeaurora.org>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
A DMB instruction can be used to ensure the relative order of only
memory accesses before and after the barrier. Since writes to system
registers are not memory operations, barrier DMB is not sufficient
for observability of memory accesses that occur before ICC_SGI1R_EL1
writes.
A DSB instruction ensures that no instructions that appear in program
order after the DSB instruction, can execute until the DSB instruction
has completed.
Cc: stable@vger.kernel.org
Acked-by: Will Deacon <will.deacon@arm.com>,
Signed-off-by: Shanker Donthineni <shankerd@codeaurora.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Commit 7778c4b27c ("irqchip: mips-gic: Use pcpu_masks to avoid reading
GIC_SH_MASK*") removed the read of the hardware mask register when
handling shared interrupts, instead using the driver's shadow pcpu_masks
entry as the effective mask. Unfortunately this did not take account of
the write to pcpu_masks during gic_shared_irq_domain_map, which
effectively unmasks the interrupt early. If an interrupt is asserted,
gic_handle_shared_int decodes and processes the interrupt even though it
has not yet been unmasked via gic_unmask_irq, which also sets the
appropriate bit in pcpu_masks.
On the MIPS Boston board, when a console command line of
"console=ttyS0,115200n8r" is passed, the modem status IRQ is enabled in
the UART, which is immediately raised to the GIC. The interrupt has been
mapped, but no handler has yet been registered, nor is it expected to be
unmasked. However, the write to pcpu_masks in gic_shared_irq_domain_map
has effectively unmasked it, resulting in endless reports of:
[ 5.058454] irq 13, desc: ffffffff80a7ad80, depth: 1, count: 0, unhandled: 0
[ 5.062057] ->handle_irq(): ffffffff801b1838,
[ 5.062175] handle_bad_irq+0x0/0x2c0
Where IRQ 13 is the UART interrupt.
To fix this, just remove the write to pcpu_masks in
gic_shared_irq_domain_map. The existing write in gic_unmask_irq is the
correct place for what is now the effective unmasking.
Cc: stable@vger.kernel.org
Fixes: 7778c4b27c ("irqchip: mips-gic: Use pcpu_masks to avoid reading GIC_SH_MASK*")
Signed-off-by: Matt Redfearn <matt.redfearn@mips.com>
Reviewed-by: Paul Burton <paul.burton@mips.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Some versions of QEMU will produce an ibm,dynamic-reconfiguration-memory
node with a ibm,dynamic-memory property that is zero-filled. This
causes the drmem code to oops trying to parse this property.
The fix for this is to validate that the property does contain LMB
entries before trying to parse it and bail if the count is zero.
Oops: Kernel access of bad area, sig: 11 [#1]
DAR: 0000000000000010
NIP read_drconf_v1_cell+0x54/0x9c
LR read_drconf_v1_cell+0x48/0x9c
Call Trace:
__param_initcall_debug+0x0/0x28 (unreliable)
drmem_init+0x144/0x2f8
do_one_initcall+0x64/0x1d0
kernel_init_freeable+0x298/0x38c
kernel_init+0x24/0x160
ret_from_kernel_thread+0x5c/0xb4
The ibm,dynamic-reconfiguration-memory device tree property generated
that causes this:
ibm,dynamic-reconfiguration-memory {
ibm,lmb-size = <0x0 0x10000000>;
ibm,memory-flags-mask = <0xff>;
ibm,dynamic-memory = <0x0 0x0 0x0 0x0 0x0 0x0>;
linux,phandle = <0x7e57eed8>;
ibm,associativity-lookup-arrays = <0x1 0x4 0x0 0x0 0x0 0x0>;
ibm,memory-preservation-time = <0x0>;
};
Signed-off-by: Nathan Fontenot <nfont@linux.vnet.ibm.com>
Reviewed-by: Cyril Bur <cyrilbur@gmail.com>
Tested-by: Daniel Black <daniel@linux.vnet.ibm.com>
[mpe: Trim oops report]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
for_each_cpu_wrap() was originally added in the #else half of a
large "#if NR_CPUS == 1" statement, but was omitted in the #if
half. This patch adds the missing #if half to prevent compile
errors when NR_CPUS is 1.
Reported-by: kbuild test robot <fengguang.wu@intel.com>
Signed-off-by: Michael Kelley <mhkelley@outlook.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: kys@microsoft.com
Cc: martin.petersen@oracle.com
Cc: mikelley@microsoft.com
Fixes: c743f0a5c5 ("sched/fair, cpumask: Export for_each_cpu_wrap()")
Link: http://lkml.kernel.org/r/SN6PR1901MB2045F087F59450507D4FCC17CBF50@SN6PR1901MB2045.namprd19.prod.outlook.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
The X86_P6_NOP config class leaves out many i686-class CPUs. Instead,
explicitly enumerate all these CPUs.
Using a configuration with M686 currently sets X86_MINIMUM_CPU_FAMILY=5
instead of the correct value of 6.
Booting on an i586 it will fail to generate the "This kernel
requires an i686 CPU, but only detected an i586 CPU" message and
intentional halt as expected. It will instead just silently hang
when it hits i686-specific instructions.
Signed-off-by: Matthew Whitehead <tedheadster@gmail.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.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/1518713696-11360-3-git-send-email-tedheadster@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
i586-class machines also lack support for Physical Address Extension (PAE),
so add them to the exclusion list.
Signed-off-by: Matthew Whitehead <tedheadster@gmail.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.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/1518713696-11360-2-git-send-email-tedheadster@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Several i586-class CPUs supporting this instruction are missing from
the X86_CMPXCHG64 config group.
Using a configuration with either M586TSC or M586MMX currently sets
X86_MINIMUM_CPU_FAMILY=4 instead of the correct value of 5.
Booting on an i486 it will fail to generate the "This kernel
requires an i586 CPU, but only detected an i486 CPU" message and
intentional halt as expected. It will instead just silently hang
when it hits i586-specific instructions.
The M586 CPU is not in this list because at least the Cyrix 5x86
lacks this instruction, and perhaps others.
Signed-off-by: Matthew Whitehead <tedheadster@gmail.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.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/1518713696-11360-1-git-send-email-tedheadster@gmail.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Improve error handling when disarming ftrace-based kprobes. Like with
arm_kprobe_ftrace(), propagate any errors from disarm_kprobe_ftrace() so
that we do not disable/unregister kprobes that are still armed. In other
words, unregister_kprobe() and disable_kprobe() should not report success
if the kprobe could not be disarmed.
disarm_all_kprobes() keeps its current behavior and attempts to
disarm all kprobes. It returns the last encountered error and gives a
warning if not all probes could be disarmed.
This patch is based on Petr Mladek's original patchset (patches 2 and 3)
back in 2015, which improved kprobes error handling, found here:
https://lkml.org/lkml/2015/2/26/452
However, further work on this had been paused since then and the patches
were not upstreamed.
Based-on-patches-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Jessica Yu <jeyu@kernel.org>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: David S . Miller <davem@davemloft.net>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: Joe Lawrence <joe.lawrence@redhat.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Miroslav Benes <mbenes@suse.cz>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: live-patching@vger.kernel.org
Link: http://lkml.kernel.org/r/20180109235124.30886-3-jeyu@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Improve error handling when arming ftrace-based kprobes. Specifically, if
we fail to arm a ftrace-based kprobe, register_kprobe()/enable_kprobe()
should report an error instead of success. Previously, this has lead to
confusing situations where register_kprobe() would return 0 indicating
success, but the kprobe would not be functional if ftrace registration
during the kprobe arming process had failed. We should therefore take any
errors returned by ftrace into account and propagate this error so that we
do not register/enable kprobes that cannot be armed. This can happen if,
for example, register_ftrace_function() finds an IPMODIFY conflict (since
kprobe_ftrace_ops has this flag set) and returns an error. Such a conflict
is possible since livepatches also set the IPMODIFY flag for their ftrace_ops.
arm_all_kprobes() keeps its current behavior and attempts to arm all
kprobes. It returns the last encountered error and gives a warning if
not all probes could be armed.
This patch is based on Petr Mladek's original patchset (patches 2 and 3)
back in 2015, which improved kprobes error handling, found here:
https://lkml.org/lkml/2015/2/26/452
However, further work on this had been paused since then and the patches
were not upstreamed.
Based-on-patches-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Jessica Yu <jeyu@kernel.org>
Acked-by: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Ananth N Mavinakayanahalli <ananth@linux.vnet.ibm.com>
Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Cc: David S . Miller <davem@davemloft.net>
Cc: Jiri Kosina <jikos@kernel.org>
Cc: Joe Lawrence <joe.lawrence@redhat.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Miroslav Benes <mbenes@suse.cz>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Petr Mladek <pmladek@suse.com>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: live-patching@vger.kernel.org
Link: http://lkml.kernel.org/r/20180109235124.30886-2-jeyu@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
- perf_mmap overwrite mode overhaul, prep work to get 'perf top'
using it, making it bearable to use it in large core count systems
such as Knights Landing/Mill Intel systems (Kan Liang)
- s/390 now uses syscall.tbl, just like x86-64 to generate the syscall
table id -> string tables used by 'perf trace' (Hendrik Brueckner)
- Add perf vendor JSON metrics for ARM Cortex-A53 Processor (William Cohen)
- Use strtoull() instead of home grown function (Andy Shevchenko)
- Synchronize kernel ABI headers, v4.16-rc1 (Ingo Molnar)
- Document missing 'perf data --force' option (Sangwon Hong)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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Merge tag 'perf-core-for-mingo-4.17-20180215' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent
Pull perf/core fixes from Arnaldo Carvalho de Melo:
- perf_mmap overwrite mode fixes/overhaul, prep work to get 'perf top'
using it, making it bearable to use it in large core count systems
such as Knights Landing/Mill Intel systems (Kan Liang)
- s/390 now uses syscall.tbl, just like x86-64 to generate the syscall
table id -> string tables used by 'perf trace' (Hendrik Brueckner)
- Use strtoull() instead of home grown function (Andy Shevchenko)
- Synchronize kernel ABI headers, v4.16-rc1 (Ingo Molnar)
- Document missing 'perf data --force' option (Sangwon Hong)
- Add perf vendor JSON metrics for ARM Cortex-A53 Processor (William Cohen)
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
The recently introduced clock gate support breaks on Tegra chips because
no thermal support is enabled for those devices. Conditionalize the code
on the existence of thermal support to fix this.
Fixes: b138eca661 ("drm/nouveau: Add support for basic clockgating on Kepler1")
Cc: Martin Peres <martin.peres@free.fr>
Cc: Lyude Paul <lyude@redhat.com>
Signed-off-by: Thierry Reding <treding@nvidia.com>
Reviewed-by: Lyude Paul <lyude@redhat.com>
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
2 clean-up patches needed for this MIPI/DSI fix,
and many fixes for GEM including fixes for Perf OA and PMU,
and fixes on scheduler and preemption.
This also includes GVT fixes: "This has one to fix GTT mmio 8b
access from guest and two simple ones for mmio switch and typo fix"
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Merge tag 'drm-intel-fixes-2018-02-14-1' of git://anongit.freedesktop.org/drm/drm-intel into drm-fixes
There are important fixes for VLV with MIPI/DSI panels,
2 clean-up patches needed for this MIPI/DSI fix,
and many fixes for GEM including fixes for Perf OA and PMU,
and fixes on scheduler and preemption.
This also includes GVT fixes: "This has one to fix GTT mmio 8b
access from guest and two simple ones for mmio switch and typo fix"
* tag 'drm-intel-fixes-2018-02-14-1' of git://anongit.freedesktop.org/drm/drm-intel:
drm/i915: Fix DSI panels with v1 MIPI sequences without a DEASSERT sequence v3
drm/i915: Free memdup-ed DSI VBT data structures on driver_unload
drm/i915: Add intel_bios_cleanup() function
drm/i915/vlv: Add cdclk workaround for DSI
drm/i915/gvt: fix one typo of render_mmio trace
drm/i915/gvt: Support BAR0 8-byte reads/writes
drm/i915/gvt: add 0xe4f0 into gen9 render list
drm/i915/pmu: Fix building without CONFIG_PM
drm/i915/pmu: Fix sleep under atomic in RC6 readout
drm/i915/pmu: Fix PMU enable vs execlists tasklet race
drm/i915: Lock out execlist tasklet while peeking inside for busy-stats
drm/i915/breadcrumbs: Ignore unsubmitted signalers
drm/i915: Don't wake the device up to check if the engine is asleep
drm/i915: Avoid truncation before clamping userspace's priority value
drm/i915/perf: Fix compiler warning for string truncation
drm/i915/perf: Fix compiler warning for string truncation
- Revert a problematic EC driver change from the 4.13 cycle that
introduced a system resume regression on Thinkpad X240 (Rafael
Wysocki).
- Clean up device tables handling in the ACPI core and the related
part of the device properties framework (Andy Shevchenko).
- Update the sysfs ABI documentatio of the dock and the INT3407
special device drivers (Aishwarya Pant).
- Add an expected switch fall-through marker to the SPCR table
parsing code (Gustavo Silva).
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Merge tag 'acpi-4.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull ACPI fixes from Rafael Wysocki:
"These fix a system resume regression from the 4.13 cycle, clean up
device table handling in the ACPI core, update sysfs ABI documentation
of a couple of drivers and add an expected switch fall-through marker
to the SPCR table parsing code.
Specifics:
- Revert a problematic EC driver change from the 4.13 cycle that
introduced a system resume regression on Thinkpad X240 (Rafael
Wysocki).
- Clean up device tables handling in the ACPI core and the related
part of the device properties framework (Andy Shevchenko).
- Update the sysfs ABI documentatio of the dock and the INT3407
special device drivers (Aishwarya Pant).
- Add an expected switch fall-through marker to the SPCR table
parsing code (Gustavo Silva)"
* tag 'acpi-4.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
ACPI: dock: document sysfs interface
ACPI / DPTF: Document dptf_power sysfs atttributes
device property: Constify device_get_match_data()
ACPI / bus: Rename acpi_get_match_data() to acpi_device_get_match_data()
ACPI / bus: Remove checks in acpi_get_match_data()
ACPI / bus: Do not traverse through non-existed device table
ACPI: SPCR: Mark expected switch fall-through in acpi_parse_spcr
ACPI / EC: Restore polling during noirq suspend/resume phases
- Fix a recently introduced build issue related to cpuidle by
covering all of the relevant combinations of Kconfig options
in its header (Rafael Wysocki).
- Add missing invocation of pm_runtime_drop_link() to the
!CONFIG_SRCU variant of __device_link_del() (Lukas Wunner).
- Fix unbalanced IRQ enable in the wakeup interrupts framework
(Tony Lindgren).
- Update cpuidle sysfs ABI documentation (Aishwarya Pant).
- Use GFP_KERNEL instead of GFP_ATOMIC for allocating memory
in dev_pm_opp_init_cpufreq_table() (Jia-Ju Bai).
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Merge tag 'pm-4.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Pull power management fixes from Rafael Wysocki:
"These fix a recently introduced build issue related to cpuidle and two
bugs in the PM core, update cpuidle documentation and clean up memory
allocations in the operating performance points (OPP) framework.
Specifics:
- Fix a recently introduced build issue related to cpuidle by
covering all of the relevant combinations of Kconfig options
in its header (Rafael Wysocki).
- Add missing invocation of pm_runtime_drop_link() to the
!CONFIG_SRCU variant of __device_link_del() (Lukas Wunner).
- Fix unbalanced IRQ enable in the wakeup interrupts framework
(Tony Lindgren).
- Update cpuidle sysfs ABI documentation (Aishwarya Pant).
- Use GFP_KERNEL instead of GFP_ATOMIC for allocating memory
in dev_pm_opp_init_cpufreq_table() (Jia-Ju Bai)"
* tag 'pm-4.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
PM: cpuidle: Fix cpuidle_poll_state_init() prototype
PM / runtime: Update links_count also if !CONFIG_SRCU
PM / wakeirq: Fix unbalanced IRQ enable for wakeirq
Documentation/ABI: update cpuidle sysfs documentation
opp: cpu: Replace GFP_ATOMIC with GFP_KERNEL in dev_pm_opp_init_cpufreq_table
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Merge tag 'hwmon-for-linus-v4.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging
Pull hwmon fix from Guenter Roeck:
"Fix bad temperature display on Ryzen/Threadripper"
* tag 'hwmon-for-linus-v4.16-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/groeck/linux-staging:
hwmon: (k10temp) Only apply temperature offset if result is positive
