| Age | Commit message (Collapse) | Author | Files | Lines |
|---|
|
This adds a new system call to enable the use of guarded storage for
user space processes. The system call takes two arguments, a command
and pointer to a guarded storage control block:
s390_guarded_storage(int command, struct gs_cb *gs_cb);
The second argument is relevant only for the GS_SET_BC_CB command.
The commands in detail:
0 - GS_ENABLE
Enable the guarded storage facility for the current task. The
initial content of the guarded storage control block will be
all zeros. After the enablement the user space code can use
load-guarded-storage-controls instruction (LGSC) to load an
arbitrary control block. While a task is enabled the kernel
will save and restore the current content of the guarded
storage registers on context switch.
1 - GS_DISABLE
Disables the use of the guarded storage facility for the current
task. The kernel will cease to save and restore the content of
the guarded storage registers, the task specific content of
these registers is lost.
2 - GS_SET_BC_CB
Set a broadcast guarded storage control block. This is called
per thread and stores a specific guarded storage control block
in the task struct of the current task. This control block will
be used for the broadcast event GS_BROADCAST.
3 - GS_CLEAR_BC_CB
Clears the broadcast guarded storage control block. The guarded-
storage control block is removed from the task struct that was
established by GS_SET_BC_CB.
4 - GS_BROADCAST
Sends a broadcast to all thread siblings of the current task.
Every sibling that has established a broadcast guarded storage
control block will load this control block and will be enabled
for guarded storage. The broadcast guarded storage control block
is used up, a second broadcast without a refresh of the stored
control block with GS_SET_BC_CB will not have any effect.
Signed-off-by: Martin Schwidefsky <[email protected]>
|
|
Before commit 452b94b8c8c7 ("mm/swap: don't BUG_ON() due to
uninitialized swap slot cache"), the following bug is reported,
------------[ cut here ]------------
kernel BUG at mm/swap_slots.c:270!
invalid opcode: 0000 [#1] SMP
CPU: 5 PID: 1745 Comm: (sd-pam) Not tainted 4.11.0-rc1-00243-g24c534bb161b #1
Hardware name: System manufacturer System Product Name/Z170-K, BIOS 1803 05/06/2016
RIP: 0010:free_swap_slot+0xba/0xd0
Call Trace:
swap_free+0x36/0x40
do_swap_page+0x360/0x6d0
__handle_mm_fault+0x880/0x1080
handle_mm_fault+0xd0/0x240
__do_page_fault+0x232/0x4d0
do_page_fault+0x20/0x70
page_fault+0x22/0x30
---[ end trace aefc9ede53e0ab21 ]---
This is raised by the BUG_ON(!swap_slot_cache_initialized) in
free_swap_slot(). This is incorrect, because even if the swap slots
cache fails to be initialized, the swap should operate properly without
the swap slots cache. And the use_swap_slot_cache check later in the
function will protect the uninitialized swap slots cache case.
In commit 452b94b8c8c7, the BUG_ON() is replaced by WARN_ON_ONCE(). In
the patch, the WARN_ON_ONCE() is removed too.
Reported-by: Linus Torvalds <[email protected]>
Acked-by: Tim Chen <[email protected]>
Cc: Michal Hocko <[email protected]>
Signed-off-by: "Huang, Ying" <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi
Pull SCSI fixes from James Bottomley:
"Nine small fixes: the biggest is probably finally sorting out Kconfig
issues with lpfc nvme. There are some performance fixes for megaraid
and hpsa and a static checker fix"
[ Johannes Thumshirn points out that there still seems to be more lpfc
vs nvme config issues. Oh well. - Linus ]
* tag 'scsi-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi:
scsi: lpfc: Finalize Kconfig options for nvme
scsi: ufs: don't check unsigned type for a negative value
scsi: hpsa: do not timeout reset operations
scsi: hpsa: limit outstanding rescans
scsi: hpsa: update check for logical volume status
scsi: megaraid_sas: Driver version upgrade
scsi: megaraid_sas: raid6 also require cpuSel check same as raid5
scsi: megaraid_sas: add correct return type check for ldio hint logic for raid1
scsi: megaraid_sas: enable intx only if msix request fails
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
Pull HID fixes from Jiri Kosina:
- regression fixes for Wacom devices, from Aaron Armstrong Skomra and
Ping Cheng
- memory leak in hid-sony driver from Roderick Colenbrander
- new device IDs support from Oscar Campos and Daniel Drake
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
HID: wacom: generic: Wacom mouse is only provided for opaque tablets
HID: corsair: Add driver Scimitar Pro RGB gaming mouse 1b1c:1b3e support to hid-corsair
HID: corsair: support for K65-K70 Rapidfire and Scimitar Pro RGB
HID: wacom: don't manually release resources for the EKR
HID: wacom: Correct Intuos Pro 2 resolution
HID: sony: Fix input device leak when connecting a DS4 twice using USB/BT
HID: chicony: Add support for another ASUS Zen AiO keyboard
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio
Pull GPIO fixes from Linus Walleij:
"Here is the first set of GPIO fixes for 4.11. It was delayed a bit
beacuse I was chicken when linux-next was not rotating last week.
This hits the ST serial driver in drivers/tty/serial and that has an
ACK from Greg, he suggested to keep the old GPIO fwnode API around to
smoothen things in the merge Windod and those have now served their
purpose so we take them out and convert the last driver to the new
API.
Apart from that it's fixes as usual.
Summary:
- set the parent on the Altera A10SR driver, also fix high level
IRQs.
- fix error path on the mockup driver.
- compilation noise about unused functions fixed.
- fix missed interrupts on the MCP23S08 expander, this is also tagged
for stable.
- retire the interrim helpers devm_get_gpiod_from_child() used to
smoothen merging in the merge window"
* tag 'gpio-v4.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio:
gpio:mcp23s08 Fixed missing interrupts
serial: st-asc: Use new GPIOD API to obtain RTS pin
gpio: altera: Use handle_level_irq when configured as a level_high
gpio: xgene: mark PM functions as __maybe_unused
gpio: mockup: return -EFAULT if copy_from_user() fails
gpio: altera-a10sr: Set gpio_chip parent property
|
|
Pull remoteproc fix from Bjorn Andersson:
"This fixes a Kbuild dependency issue related to the Qualcomm
remoteproc drivers"
* tag 'rproc-v4.11-fixes' of git://github.com/andersson/remoteproc:
remoteproc: qcom: fix QCOM_SMD dependencies
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs
Pull f2fs fixes from Jaegeuk Kim:
- fix performance regression reported by lkp-rebot
- fix potential data lost after power-cut due to SSR reallocation
* tag 'for-f2fs-4.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/jaegeuk/f2fs:
f2fs: combine nat_bits and free_nid_bitmap cache
f2fs: skip scanning free nid bitmap of full NAT blocks
f2fs: use __set{__clear}_bit_le
f2fs: declare static functions
f2fs: don't overwrite node block by SSR
|
|
When releasing the bus, let's clear the bus pointers to mark it out. If
any further device unregister happens on this bus, we know that we're
done if we found the bus being released already.
Signed-off-by: Peter Xu <[email protected]>
Signed-off-by: Radim Krčmář <[email protected]>
|
|
Commit f85c9dc ("Support tool ID and additional tool types") introduced mouse
and lens cursor tools to generic codepath, which covers both display (direct)
and opaque tablets (indirect devices). However, mouse and lens cursor tools are
only provided for opaque tablets. This patch ignores mouse and lens cursor tools
if the device is a display tablet.
Signed-off-by: Ping Cheng <[email protected]>
Reviewed-by: Jason Gerecke <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>
|
|
hid-corsair
This mouse sold by Corsair as Scimitar PRO RGB defines two consecutive
Logical Minimum items in its Application (Consumer.0001) report making
it non parseable. This patch fixes the report descriptor overriding
byte 77 in rdesc from 0x16 (Logical Minimum with 16 bits value) to 0x26
(Logical Maximum with 16 bits value).
Signed-off-by: Oscar Campos <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>
|
|
Add quirks for several corsair gaming devices to avoid long delays on
report initialization
Supported devices:
- Corsair K65RGB Rapidfire Gaming Keyboard
- Corsair K70RGB Rapidfire Gaming Keyboard
- Corsair Scimitar Pro RGB Gaming Mouse
Signed-off-by: Oscar Campos <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>
|
|
Commit 5b779fc introduces the manual release of resources in wacom_remove() as
an addition to the driver's use of devm. The EKR resources can only be
released through wacom_remote_destroy_one() so we skip the manual release for
it.
Fixes: 5b779fc ("HID: wacom: release the resources before leaving despite devm")
Signed-off-by: Aaron Armstrong Skomra <[email protected]>
Reviewed-by: Benjamin Tissoires <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>
|
|
The features struct for the second gen Intuos Pro uses the wrong constant for
the resolution. This fix is for commit 4922cd2.
Fixes: 4922cd2 ("HID: wacom: Support 2nd-gen Intuos Pro's Bluetooth classic interface")
Signed-off-by: Aaron Armstrong Skomra <[email protected]>
Reviewed-by: Benjamin Tissoires <[email protected]>
Signed-off-by: Jiri Kosina <[email protected]>
|
|
Let's use #define values for better readability.
Signed-off-by: Farhan Ali <[email protected]>
Reviewed-by: Cornelia Huck <[email protected]>
Signed-off-by: Christian Borntraeger <[email protected]>
|
|
The recent arch_prctl rework added a bracket instead of a comma. Fix it.
Fixes: 17a6e1b8e8e8 ("x86/arch_prctl/64: Rename do_arch_prctl() to do_arch_prctl_64()")
Signed-off-by: Kyle Huey <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: [email protected]
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>
|
|
qcom_smd_register_edge() is provided by either QCOM_SMD or RPMSG_QCOM_SMD,
and if both of them are disabled, it does nothing.
The check for the PIL drivers however only checks for QCOM_SMD, so it breaks
with QCOM_SMD=n && RPMSG_QCOM_SMD=m:
drivers/remoteproc/built-in.o: In function `smd_subdev_remove':
qcom_wcnss_iris.c:(.text+0x231c): undefined reference to `qcom_smd_unregister_edge'
drivers/remoteproc/built-in.o: In function `smd_subdev_probe':
qcom_wcnss_iris.c:(.text+0x2344): undefined reference to `qcom_smd_register_edge'
drivers/remoteproc/built-in.o: In function `smd_subdev_probe':
qcom_q6v5_pil.c:(.text+0x3538): undefined reference to `qcom_smd_register_edge'
qcom_q6v5_pil.c:(.text+0x3538): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `qcom_smd_register_edge'
This clarifies the Kconfig dependency.
Fixes: 4b48921a8f74 ("remoteproc: qcom: Use common SMD edge handler")
Signed-off-by: Arnd Bergmann <[email protected]>
Signed-off-by: Bjorn Andersson <[email protected]>
|
|
Signed-off-by: Luiz Capitulino <[email protected]>
Reviewed-by: David Hildenbrand <[email protected]>
Signed-off-by: Radim Krčmář <[email protected]>
|
|
kvm mmu is reset once successfully loading CR3 as part of emulating vmentry
in nested_vmx_load_cr3(). We should not reset kvm mmu twice.
Cc: Paolo Bonzini <[email protected]>
Cc: Radim Krčmář <[email protected]>
Signed-off-by: Wanpeng Li <[email protected]>
Signed-off-by: Radim Krčmář <[email protected]>
|
|
drivers/ptp/ptp_kvm.c:229:1-3: WARNING: PTR_ERR_OR_ZERO can be used
Use PTR_ERR_OR_ZERO rather than if(IS_ERR(...)) + PTR_ERR
Generated by: scripts/coccinelle/api/ptr_ret.cocci
CC: Marcelo Tosatti <[email protected]>
Signed-off-by: Fengguang Wu <[email protected]>
Signed-off-by: Radim Krčmář <[email protected]>
|
|
If avic is not enabled, avic_vm_init() does nothing and returns early.
However, avic_vm_destroy() still tries to destroy what hasn't been created.
The only bad consequence of this now is that avic_vm_destroy() uses
svm_vm_data_hash_lock that hasn't been initialized (and is not meant
to be used at all if avic is not enabled).
Return early from avic_vm_destroy() if avic is not enabled.
It has nothing to destroy.
Signed-off-by: Dmitry Vyukov <[email protected]>
Cc: Joerg Roedel <[email protected]>
Cc: Paolo Bonzini <[email protected]>
Cc: "Radim Krčmář" <[email protected]>
Cc: David Hildenbrand <[email protected]>
Cc: [email protected]
Cc: [email protected]
Reviewed-by: David Hildenbrand <[email protected]>
Signed-off-by: Radim Krčmář <[email protected]>
|
|
We never needed the call trace and we better rate-limit if it can be
triggered by a guest.
Signed-off-by: Radim Krčmář <[email protected]>
|
|
Intel supports faulting on the CPUID instruction beginning with Ivy Bridge.
When enabled, the processor will fault on attempts to execute the CPUID
instruction with CPL>0. Exposing this feature to userspace will allow a
ptracer to trap and emulate the CPUID instruction.
When supported, this feature is controlled by toggling bit 0 of
MSR_MISC_FEATURES_ENABLES. It is documented in detail in Section 2.3.2 of
https://bugzilla.kernel.org/attachment.cgi?id=243991
Implement a new pair of arch_prctls, available on both x86-32 and x86-64.
ARCH_GET_CPUID: Returns the current CPUID state, either 0 if CPUID faulting
is enabled (and thus the CPUID instruction is not available) or 1 if
CPUID faulting is not enabled.
ARCH_SET_CPUID: Set the CPUID state to the second argument. If
cpuid_enabled is 0 CPUID faulting will be activated, otherwise it will
be deactivated. Returns ENODEV if CPUID faulting is not supported on
this system.
The state of the CPUID faulting flag is propagated across forks, but reset
upon exec.
Signed-off-by: Kyle Huey <[email protected]>
Cc: Grzegorz Andrejczuk <[email protected]>
Cc: [email protected]
Cc: Radim Krčmář <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: [email protected]
Cc: Nadav Amit <[email protected]>
Cc: Robert O'Callahan <[email protected]>
Cc: Richard Weinberger <[email protected]>
Cc: "Rafael J. Wysocki" <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Len Brown <[email protected]>
Cc: Shuah Khan <[email protected]>
Cc: [email protected]
Cc: Jeff Dike <[email protected]>
Cc: Alexander Viro <[email protected]>
Cc: [email protected]
Cc: David Matlack <[email protected]>
Cc: Boris Ostrovsky <[email protected]>
Cc: Dmitry Safonov <[email protected]>
Cc: [email protected]
Cc: Paolo Bonzini <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>
|
|
Intel supports faulting on the CPUID instruction beginning with Ivy Bridge.
When enabled, the processor will fault on attempts to execute the CPUID
instruction with CPL>0. This will allow a ptracer to emulate the CPUID
instruction.
Bit 31 of MSR_PLATFORM_INFO advertises support for this feature. It is
documented in detail in Section 2.3.2 of
https://bugzilla.kernel.org/attachment.cgi?id=243991
Detect support for this feature and expose it as X86_FEATURE_CPUID_FAULT.
Signed-off-by: Kyle Huey <[email protected]>
Reviewed-by: Borislav Petkov <[email protected]>
Cc: Grzegorz Andrejczuk <[email protected]>
Cc: [email protected]
Cc: Radim Krčmář <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: [email protected]
Cc: Nadav Amit <[email protected]>
Cc: Robert O'Callahan <[email protected]>
Cc: Richard Weinberger <[email protected]>
Cc: "Rafael J. Wysocki" <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Len Brown <[email protected]>
Cc: Shuah Khan <[email protected]>
Cc: [email protected]
Cc: Jeff Dike <[email protected]>
Cc: Alexander Viro <[email protected]>
Cc: [email protected]
Cc: David Matlack <[email protected]>
Cc: Boris Ostrovsky <[email protected]>
Cc: Dmitry Safonov <[email protected]>
Cc: [email protected]
Cc: Paolo Bonzini <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>
|
|
Hook up arch_prctl to call do_arch_prctl() on x86-32, and in 32 bit compat
mode on x86-64. This allows to have arch_prctls that are not specific to 64
bits.
On UML, simply stub out this syscall.
Signed-off-by: Kyle Huey <[email protected]>
Cc: Grzegorz Andrejczuk <[email protected]>
Cc: [email protected]
Cc: Radim Krčmář <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: [email protected]
Cc: Nadav Amit <[email protected]>
Cc: Robert O'Callahan <[email protected]>
Cc: Richard Weinberger <[email protected]>
Cc: "Rafael J. Wysocki" <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Len Brown <[email protected]>
Cc: Shuah Khan <[email protected]>
Cc: [email protected]
Cc: Jeff Dike <[email protected]>
Cc: Alexander Viro <[email protected]>
Cc: [email protected]
Cc: David Matlack <[email protected]>
Cc: Boris Ostrovsky <[email protected]>
Cc: Dmitry Safonov <[email protected]>
Cc: [email protected]
Cc: Paolo Bonzini <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>
|
|
Add do_arch_prctl_common() to handle arch_prctls that are not specific to 64
bit mode. Call it from the syscall entry point, but not any of the other
callsites in the kernel, which all want one of the existing 64 bit only
arch_prctls.
Signed-off-by: Kyle Huey <[email protected]>
Cc: Grzegorz Andrejczuk <[email protected]>
Cc: [email protected]
Cc: Radim Krčmář <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: [email protected]
Cc: Nadav Amit <[email protected]>
Cc: Robert O'Callahan <[email protected]>
Cc: Richard Weinberger <[email protected]>
Cc: "Rafael J. Wysocki" <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Len Brown <[email protected]>
Cc: Shuah Khan <[email protected]>
Cc: [email protected]
Cc: Jeff Dike <[email protected]>
Cc: Alexander Viro <[email protected]>
Cc: [email protected]
Cc: David Matlack <[email protected]>
Cc: Boris Ostrovsky <[email protected]>
Cc: Dmitry Safonov <[email protected]>
Cc: [email protected]
Cc: Paolo Bonzini <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>
|
|
In order to introduce new arch_prctls that are not 64 bit only, rename the
existing 64 bit implementation to do_arch_prctl_64(). Also rename the
second argument of that function from 'addr' to 'arg2', because it will no
longer always be an address.
Signed-off-by: Kyle Huey <[email protected]>
Reviewed-by: Andy Lutomirski <[email protected]>
Cc: Grzegorz Andrejczuk <[email protected]>
Cc: [email protected]
Cc: Radim Krčmář <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: [email protected]
Cc: Nadav Amit <[email protected]>
Cc: Robert O'Callahan <[email protected]>
Cc: Richard Weinberger <[email protected]>
Cc: "Rafael J. Wysocki" <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Len Brown <[email protected]>
Cc: Shuah Khan <[email protected]>
Cc: [email protected]
Cc: Jeff Dike <[email protected]>
Cc: Alexander Viro <[email protected]>
Cc: [email protected]
Cc: David Matlack <[email protected]>
Cc: Boris Ostrovsky <[email protected]>
Cc: Dmitry Safonov <[email protected]>
Cc: [email protected]
Cc: Paolo Bonzini <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>
|
|
Use the SYSCALL_DEFINE2 macro instead of manually defining it.
Signed-off-by: Kyle Huey <[email protected]>
Cc: Grzegorz Andrejczuk <[email protected]>
Cc: [email protected]
Cc: Radim Krčmář <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: [email protected]
Cc: Nadav Amit <[email protected]>
Cc: Robert O'Callahan <[email protected]>
Cc: Richard Weinberger <[email protected]>
Cc: "Rafael J. Wysocki" <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Len Brown <[email protected]>
Cc: Shuah Khan <[email protected]>
Cc: [email protected]
Cc: Jeff Dike <[email protected]>
Cc: Alexander Viro <[email protected]>
Cc: [email protected]
Cc: David Matlack <[email protected]>
Cc: Boris Ostrovsky <[email protected]>
Cc: Dmitry Safonov <[email protected]>
Cc: [email protected]
Cc: Paolo Bonzini <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>
|
|
The x86 specific arch_prctl() arbitrarily changed prctl's 'option' to
'code'. Before adding new options, rename it.
Signed-off-by: Kyle Huey <[email protected]>
Cc: Grzegorz Andrejczuk <[email protected]>
Cc: [email protected]
Cc: Radim Krčmář <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: [email protected]
Cc: Nadav Amit <[email protected]>
Cc: Robert O'Callahan <[email protected]>
Cc: Richard Weinberger <[email protected]>
Cc: "Rafael J. Wysocki" <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Len Brown <[email protected]>
Cc: Shuah Khan <[email protected]>
Cc: [email protected]
Cc: Jeff Dike <[email protected]>
Cc: Alexander Viro <[email protected]>
Cc: [email protected]
Cc: David Matlack <[email protected]>
Cc: Boris Ostrovsky <[email protected]>
Cc: Dmitry Safonov <[email protected]>
Cc: [email protected]
Cc: Paolo Bonzini <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>
|
|
This matches the only public Intel documentation of this MSR, in the
"Virtualization Technology FlexMigration Application Note"
(preserved at https://bugzilla.kernel.org/attachment.cgi?id=243991)
Signed-off-by: Kyle Huey <[email protected]>
Cc: Grzegorz Andrejczuk <[email protected]>
Cc: [email protected]
Cc: Radim Krčmář <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Dave Hansen <[email protected]>
Cc: Andi Kleen <[email protected]>
Cc: [email protected]
Cc: Nadav Amit <[email protected]>
Cc: Robert O'Callahan <[email protected]>
Cc: Richard Weinberger <[email protected]>
Cc: "Rafael J. Wysocki" <[email protected]>
Cc: Borislav Petkov <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Len Brown <[email protected]>
Cc: Shuah Khan <[email protected]>
Cc: [email protected]
Cc: Jeff Dike <[email protected]>
Cc: Alexander Viro <[email protected]>
Cc: [email protected]
Cc: David Matlack <[email protected]>
Cc: Boris Ostrovsky <[email protected]>
Cc: Dmitry Safonov <[email protected]>
Cc: [email protected]
Cc: Paolo Bonzini <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Thomas Gleixner <[email protected]>
|
|
Both nat_bits cache and free_nid_bitmap cache provide same functionality
as a intermediate cache between free nid cache and disk, but with
different granularity of indicating free nid range, and different
persistence policy. nat_bits cache provides better persistence ability,
and free_nid_bitmap provides better granularity.
In this patch we combine advantage of both caches, so finally policy of
the intermediate cache would be:
- init: load free nid status from nat_bits into free_nid_bitmap
- lookup: scan free_nid_bitmap before load NAT blocks
- update: update free_nid_bitmap in real-time
- persistence: udpate and persist nat_bits in checkpoint
This patch also resolves performance regression reported by lkp-robot.
commit:
4ac912427c4214d8031d9ad6fbc3bc75e71512df ("f2fs: introduce free nid bitmap")
d00030cf9cd0bb96fdccc41e33d3c91dcbb672ba ("f2fs: use __set{__clear}_bit_le")
1382c0f3f9d3f936c8bc42ed1591cf7a593ef9f7 ("f2fs: combine nat_bits and free_nid_bitmap cache")
4ac912427c4214d8 d00030cf9cd0bb96fdccc41e33 1382c0f3f9d3f936c8bc42ed15
---------------- -------------------------- --------------------------
%stddev %change %stddev %change %stddev
\ | \ | \
77863 ± 0% +2.1% 79485 ± 1% +50.8% 117404 ± 0% aim7.jobs-per-min
231.63 ± 0% -2.0% 227.01 ± 1% -33.6% 153.80 ± 0% aim7.time.elapsed_time
231.63 ± 0% -2.0% 227.01 ± 1% -33.6% 153.80 ± 0% aim7.time.elapsed_time.max
896604 ± 0% -0.8% 889221 ± 3% -20.2% 715260 ± 1% aim7.time.involuntary_context_switches
2394 ± 1% +4.6% 2503 ± 1% +3.7% 2481 ± 2% aim7.time.maximum_resident_set_size
6240 ± 0% -1.5% 6145 ± 1% -14.1% 5360 ± 1% aim7.time.system_time
1111357 ± 3% +1.9% 1132509 ± 2% -6.2% 1041932 ± 2% aim7.time.voluntary_context_switches
...
Signed-off-by: Chao Yu <[email protected]>
Tested-by: Xiaolong Ye <[email protected]>
Signed-off-by: Jaegeuk Kim <[email protected]>
|
|
This patch adds to account free nids for each NAT blocks, and while
scanning all free nid bitmap, do check count and skip lookuping in
full NAT block.
Signed-off-by: Chao Yu <[email protected]>
Signed-off-by: Jaegeuk Kim <[email protected]>
|
|
This patch uses __set{__clear}_bit_le for highter speed.
Reviewed-by: Chao Yu <[email protected]>
Signed-off-by: Jaegeuk Kim <[email protected]>
|
|
This is to avoid build warning reported by kbuild test robot.
Signed-off-by: Fengguang Wu <[email protected]>
Signed-off-by: Jaegeuk Kim <[email protected]>
|
|
This patch fixes that SSR can overwrite previous warm node block consisting of
a node chain since the last checkpoint.
Fixes: 5b6c6be2d878 ("f2fs: use SSR for warm node as well")
Reviewed-by: Chao Yu <[email protected]>
Signed-off-by: Jaegeuk Kim <[email protected]>
|
|
|
|
This BUG_ON() triggered for me once at shutdown, and I don't see a
reason for the check. The code correctly checks whether the swap slot
cache is usable or not, so an uninitialized swap slot cache is not
actually problematic afaik.
I've temporarily just switched the BUG_ON() to a WARN_ON_ONCE(), since
I'm not sure why that seemingly pointless check was there. I suspect
the real fix is to just remove it entirely, but for now we'll warn about
it but not bring the machine down.
Cc: "Huang, Ying" <[email protected]>
Cc: Tim Chen <[email protected]>
Cc: Michal Hocko <[email protected]>
Cc: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull more powerpc fixes from Michael Ellerman:
"A couple of minor powerpc fixes for 4.11:
- wire up statx() syscall
- don't print a warning on memory hotplug when HPT resizing isn't
available
Thanks to: David Gibson, Chandan Rajendra"
* tag 'powerpc-4.11-5' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/pseries: Don't give a warning when HPT resizing isn't available
powerpc: Wire up statx() syscall
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc fixes from Helge Deller:
- Mikulas Patocka added support for R_PARISC_SECREL32 relocations in
modules with CONFIG_MODVERSIONS.
- Dave Anglin optimized the cache flushing for vmap ranges.
- Arvind Yadav provided a fix for a potential NULL pointer dereference
in the parisc perf code (and some code cleanups).
- I wired up the new statx system call, fixed some compiler warnings
with the access_ok() macro and fixed shutdown code to really halt a
system at shutdown instead of crashing & rebooting.
* 'parisc-4.11-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
parisc: Fix system shutdown halt
parisc: perf: Fix potential NULL pointer dereference
parisc: Avoid compiler warnings with access_ok()
parisc: Wire up statx system call
parisc: Optimize flush_kernel_vmap_range and invalidate_kernel_vmap_range
parisc: support R_PARISC_SECREL32 relocation in modules
|
|
Pull SCSI target fixes from Nicholas Bellinger:
"The bulk of the changes are in qla2xxx target driver code to address
various issues found during Cavium/QLogic's internal testing (stable
CC's included), along with a few other stability and smaller
miscellaneous improvements.
There are also a couple of different patch sets from Mike Christie,
which have been a result of his work to use target-core ALUA logic
together with tcm-user backend driver.
Finally, a patch to address some long standing issues with
pass-through SCSI export of TYPE_TAPE + TYPE_MEDIUM_CHANGER devices,
which will make folks using physical (or virtual) magnetic tape happy"
* git://git.kernel.org/pub/scm/linux/kernel/git/nab/target-pending: (28 commits)
qla2xxx: Update driver version to 9.00.00.00-k
qla2xxx: Fix delayed response to command for loop mode/direct connect.
qla2xxx: Change scsi host lookup method.
qla2xxx: Add DebugFS node to display Port Database
qla2xxx: Use IOCB interface to submit non-critical MBX.
qla2xxx: Add async new target notification
qla2xxx: Export DIF stats via debugfs
qla2xxx: Improve T10-DIF/PI handling in driver.
qla2xxx: Allow relogin to proceed if remote login did not finish
qla2xxx: Fix sess_lock & hardware_lock lock order problem.
qla2xxx: Fix inadequate lock protection for ABTS.
qla2xxx: Fix request queue corruption.
qla2xxx: Fix memory leak for abts processing
qla2xxx: Allow vref count to timeout on vport delete.
tcmu: Convert cmd_time_out into backend device attribute
tcmu: make cmd timeout configurable
tcmu: add helper to check if dev was configured
target: fix race during implicit transition work flushes
target: allow userspace to set state to transitioning
target: fix ALUA transition timeout handling
...
|
|
git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm
Pull device-dax fixes from Dan Williams:
"The device-dax driver was not being careful to handle falling back to
smaller fault-granularity sizes.
The driver already fails fault attempts that are smaller than the
device's alignment, but it also needs to handle the cases where a
larger page mapping could be established. For simplicity of the
immediate fix the implementation just signals VM_FAULT_FALLBACK until
fault-size == device-alignment.
One fix is for -stable to address pmd-to-pte fallback from the
original implementation, another fix is for the new (introduced in
4.11-rc1) pud-to-pmd regression, and a typo fix comes along for the
ride.
These have received a build success notification from the kbuild
robot"
* 'libnvdimm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm:
device-dax: fix debug output typo
device-dax: fix pud fault fallback handling
device-dax: fix pmd/pte fault fallback handling
|
|
Signed-off-by: Himanshu Madhani <[email protected]>
signed-off-by: Giridhar Malavali <[email protected]>
Signed-off-by: Nicholas Bellinger <[email protected]>
|
|
Current driver wait for FW to be in the ready state before
processing in-coming commands. For Arbitrated Loop or
Point-to- Point (not switch), FW Ready state can take a while.
FW will transition to ready state after all Nports have been
logged in. In the mean time, certain initiators have completed
the login and starts IO. Driver needs to start processing all
queues if FW is already started.
Signed-off-by: Quinn Tran <[email protected]>
Signed-off-by: Himanshu Madhani <[email protected]>
Signed-off-by: Nicholas Bellinger <[email protected]>
|
|
For target mode, when new scsi command arrive, driver first performs
a look up of the SCSI Host. The current look up method is based on
the ALPA portion of the NPort ID. For Cisco switch, the ALPA can
not be used as the index. Instead, the new search method is based
on the full value of the Nport_ID via btree lib.
Signed-off-by: Quinn Tran <[email protected]>
Signed-off-by: Himanshu Madhani <[email protected]>
Signed-off-by: Nicholas Bellinger <[email protected]>
|
|
Signed-off-by: Himanshu Madhani <[email protected]>
Signed-off-by: Giridhar Malavali <[email protected]>
Signed-off-by: Nicholas Bellinger <[email protected]>
|
|
The Mailbox interface is currently over subscribed. We like
to reserve the Mailbox interface for the chip managment and
link initialization. Any non essential Mailbox command will
be routed through the IOCB interface. The IOCB interface is
able to absorb more commands.
Following commands are being routed through IOCB interface
- Get ID List (007Ch)
- Get Port DB (0064h)
- Get Link Priv Stats (006Dh)
Signed-off-by: Quinn Tran <[email protected]>
Signed-off-by: Himanshu Madhani <[email protected]>
Signed-off-by: Nicholas Bellinger <[email protected]>
|
|
Signed-off-by: Quinn Tran <[email protected]>
Signed-off-by: Himanshu Madhani <[email protected]>
Signed-off-by: Nicholas Bellinger <[email protected]>
|
|
Signed-off-by: Anil Gurumurthy <[email protected]>
Signed-off-by: Himanshu Madhani <[email protected]>
Signed-off-by: Nicholas Bellinger <[email protected]>
|
|
Add routines to support T10 DIF tag.
Signed-off-by: Quinn Tran <[email protected]>
Signed-off-by: Anil Gurumurthy <[email protected]>
Signed-off-by: Himanshu Madhani <[email protected]>
Signed-off-by: Nicholas Bellinger <[email protected]>
|
|
If the remote port have started the login process, then the
PLOGI and PRLI should be back to back. Driver will allow
the remote port to complete the process. For the case where
the remote port decide to back off from sending PRLI, this
local port sets an expiration timer for the PRLI. Once the
expiration time passes, the relogin retry logic is allowed
to go through and perform login with the remote port.
Signed-off-by: Quinn Tran <[email protected]>
Signed-off-by: Himanshu Madhani <[email protected]>
Signed-off-by: Nicholas Bellinger <[email protected]>
|
|
The main lock that needs to be held for CMD or TMR submission
to upper layer is the sess_lock. The sess_lock is used to
serialize cmd submission and session deletion. The addition
of hardware_lock being held is not necessary. This patch removes
hardware_lock dependency from CMD/TMR submission.
Use hardware_lock only for error response in this case.
Path1
CPU0 CPU1
---- ----
lock(&(&ha->tgt.sess_lock)->rlock);
lock(&(&ha->hardware_lock)->rlock);
lock(&(&ha->tgt.sess_lock)->rlock);
lock(&(&ha->hardware_lock)->rlock);
Path2/deadlock
*** DEADLOCK ***
Call Trace:
dump_stack+0x85/0xc2
print_circular_bug+0x1e3/0x250
__lock_acquire+0x1425/0x1620
lock_acquire+0xbf/0x210
_raw_spin_lock_irqsave+0x53/0x70
qlt_sess_work_fn+0x21d/0x480 [qla2xxx]
process_one_work+0x1f4/0x6e0
Cc: <[email protected]>
Cc: Bart Van Assche <[email protected]>
Reported-by: Bart Van Assche <[email protected]>
Signed-off-by: Quinn Tran <[email protected]>
Signed-off-by: Himanshu Madhani <[email protected]>
Signed-off-by: Nicholas Bellinger <[email protected]>
|