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Since the PMU callback runs in irq context, it synchronizes with gt
reset using the reset count. We could run into a case where the PMU
callback could read the reset count before it is updated. This has a
potential of corrupting the busyness stats.
In addition to the reset count, check if the reset bit is set before
capturing busyness.
In addition save the previous stats only if you intend to update them.
v2:
- The 2 reset counts captured in the PMU callback can end up being the
same if they were captured right after the count is incremented in the
reset flow. This can lead to a bad busyness state. Ensure that reset
is not in progress when the initial reset count is captured.
Signed-off-by: Umesh Nerlige Ramappa <umesh.nerlige.ramappa@intel.com>
Reviewed-by: Matthew Brost <matthew.brost@intel.com>
Signed-off-by: John Harrison <John.C.Harrison@Intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211108211057.68783-1-umesh.nerlige.ramappa@intel.com
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save_sw_bytes() did not fully initialize sw_bytes, which caused KMSAN
to report an infoleak (see below).
Initialize sw_bytes explicitly to avoid this.
KMSAN report follows:
=====================================================
BUG: KMSAN: kernel-infoleak in instrument_copy_to_user ./include/linux/instrumented.h:121
BUG: KMSAN: kernel-infoleak in __copy_to_user ./include/linux/uaccess.h:154
BUG: KMSAN: kernel-infoleak in save_xstate_epilog+0x2df/0x510 arch/x86/kernel/fpu/signal.c:127
instrument_copy_to_user ./include/linux/instrumented.h:121
__copy_to_user ./include/linux/uaccess.h:154
save_xstate_epilog+0x2df/0x510 arch/x86/kernel/fpu/signal.c:127
copy_fpstate_to_sigframe+0x861/0xb60 arch/x86/kernel/fpu/signal.c:245
get_sigframe+0x656/0x7e0 arch/x86/kernel/signal.c:296
__setup_rt_frame+0x14d/0x2a60 arch/x86/kernel/signal.c:471
setup_rt_frame arch/x86/kernel/signal.c:781
handle_signal arch/x86/kernel/signal.c:825
arch_do_signal_or_restart+0x417/0xdd0 arch/x86/kernel/signal.c:870
handle_signal_work kernel/entry/common.c:149
exit_to_user_mode_loop+0x1f6/0x490 kernel/entry/common.c:173
exit_to_user_mode_prepare kernel/entry/common.c:208
__syscall_exit_to_user_mode_work kernel/entry/common.c:290
syscall_exit_to_user_mode+0x7e/0xc0 kernel/entry/common.c:302
do_syscall_64+0x60/0xd0 arch/x86/entry/common.c:88
entry_SYSCALL_64_after_hwframe+0x44/0xae ??:?
Local variable sw_bytes created at:
save_xstate_epilog+0x80/0x510 arch/x86/kernel/fpu/signal.c:121
copy_fpstate_to_sigframe+0x861/0xb60 arch/x86/kernel/fpu/signal.c:245
Bytes 20-47 of 48 are uninitialized
Memory access of size 48 starts at ffff8880801d3a18
Data copied to user address 00007ffd90e2ef50
=====================================================
Link: https://lore.kernel.org/all/CAG_fn=V9T6OKPonSjsi9PmWB0hMHFC=yawozdft8i1-MSxrv=w@mail.gmail.com/
Fixes: 53599b4d54b9b8dd ("x86/fpu/signal: Prepare for variable sigframe length")
Reported-by: Alexander Potapenko <glider@google.com>
Signed-off-by: Marco Elver <elver@google.com>
Signed-off-by: Alexander Potapenko <glider@google.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Tested-by: Alexander Potapenko <glider@google.com>
Link: https://lkml.kernel.org/r/20211126124746.761278-1-glider@google.com
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net/netfilter/nfnetlink_queue.c:601:36: warning: variable 'ctinfo' is
uninitialized when used here [-Wuninitialized]
if (ct && nfnl_ct->build(skb, ct, ctinfo, NFQA_CT, NFQA_CT_INFO) < 0)
ctinfo is only uninitialized if ct == NULL. Init it to 0 to silence this.
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
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Convention for all the other "lake" CPUs is all one word.
So s/RAPTOR_LAKE/RAPTORLAKE/
Fixes: fbdb5e8f2926 ("x86/cpu: Add Raptor Lake to Intel family")
Reported-by: Rui Zhang <rui.zhang@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Link: https://lkml.kernel.org/r/20211119170832.1034220-1-tony.luck@intel.com
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In a typical read transfer, start completion flag is being set after
read finishes (notice ipd bit 4 being set):
trasnfer poll=0
i2c start
rk3x-i2c fdd40000.i2c: IRQ: state 1, ipd: 10
i2c read
rk3x-i2c fdd40000.i2c: IRQ: state 2, ipd: 1b
i2c stop
rk3x-i2c fdd40000.i2c: IRQ: state 4, ipd: 33
This causes I2C transfer being aborted in polled mode from a stop completion
handler:
trasnfer poll=1
i2c start
rk3x-i2c fdd40000.i2c: IRQ: state 1, ipd: 10
i2c read
rk3x-i2c fdd40000.i2c: IRQ: state 2, ipd: 0
rk3x-i2c fdd40000.i2c: IRQ: state 2, ipd: 1b
i2c stop
rk3x-i2c fdd40000.i2c: IRQ: state 4, ipd: 13
i2c stop
rk3x-i2c fdd40000.i2c: unexpected irq in STOP: 0x10
Clearing the START flag after read fixes the issue without any obvious
side effects.
This issue was dicovered on RK3566 when adding support for powering
off the RK817 PMIC.
Signed-off-by: Ondrej Jirman <megous@megous.com>
Reviewed-by: John Keeping <john@metanate.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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random.c is a bit understaffed, and folks want more prompt reviews. I've
got the crypto background and the interest to do these reviews, and have
authored parts of the file already.
Cc: Theodore Ts'o <tytso@mit.edu>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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Signed-off-by: Helge Deller <deller@gmx.de>
Reported-by: kernel test robot <lkp@intel.com>
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Add some more config options which reflect what's needed to boot our
64-bit debian buildds out of the box.
Signed-off-by: Helge Deller <deller@gmx.de>
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Default KBUILD_IMAGE to $(boot)/bzImage if a self-extracting
(CONFIG_PARISC_SELF_EXTRACT=y) kernel is to be built.
This fixes the bindeb-pkg make target.
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: <stable@vger.kernel.org> # v4.14+
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This is to fix incorrect pointer arithmetic which caused wrong
OpRegion version returned, then VM driver got error to get wanted
VBT block. We need to be safe to return correct data, so force
pointer type for byte access.
Fixes: 49ba1a2976c8 ("vfio/pci: Add OpRegion 2.0+ Extended VBT support.")
Cc: Colin Xu <colin.xu@gmail.com>
Cc: Alex Williamson <alex.williamson@redhat.com>
Cc: Dmitry Torokhov <dtor@chromium.org>
Cc: "Xu, Terrence" <terrence.xu@intel.com>
Cc: "Gao, Fred" <fred.gao@intel.com>
Acked-by: Colin Xu <colin.xu@gmail.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Link: https://lore.kernel.org/r/20211125051328.3359902-1-zhenyuw@linux.intel.com
[aw: line wrap]
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
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vfio.c abuses (misuses) "/**", which indicates the beginning of
kernel-doc notation in the kernel tree. This causes a bunch of
kernel-doc complaints about this source file, so quieten all of
them by changing all "/**" to "/*".
vfio.c:236: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
* IOMMU driver registration
vfio.c:236: warning: missing initial short description on line:
* IOMMU driver registration
vfio.c:295: warning: expecting prototype for Container objects(). Prototype was for vfio_container_get() instead
vfio.c:317: warning: expecting prototype for Group objects(). Prototype was for __vfio_group_get_from_iommu() instead
vfio.c:496: warning: Function parameter or member 'device' not described in 'vfio_device_put'
vfio.c:496: warning: expecting prototype for Device objects(). Prototype was for vfio_device_put() instead
vfio.c:599: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
* Async device support
vfio.c:599: warning: missing initial short description on line:
* Async device support
vfio.c:693: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
* VFIO driver API
vfio.c:693: warning: missing initial short description on line:
* VFIO driver API
vfio.c:835: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
* Get a reference to the vfio_device for a device. Even if the
vfio.c:835: warning: missing initial short description on line:
* Get a reference to the vfio_device for a device. Even if the
vfio.c:969: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
* VFIO base fd, /dev/vfio/vfio
vfio.c:969: warning: missing initial short description on line:
* VFIO base fd, /dev/vfio/vfio
vfio.c:1187: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
* VFIO Group fd, /dev/vfio/$GROUP
vfio.c:1187: warning: missing initial short description on line:
* VFIO Group fd, /dev/vfio/$GROUP
vfio.c:1540: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
* VFIO Device fd
vfio.c:1540: warning: missing initial short description on line:
* VFIO Device fd
vfio.c:1615: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
* External user API, exported by symbols to be linked dynamically.
vfio.c:1615: warning: missing initial short description on line:
* External user API, exported by symbols to be linked dynamically.
vfio.c:1663: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
* External user API, exported by symbols to be linked dynamically.
vfio.c:1663: warning: missing initial short description on line:
* External user API, exported by symbols to be linked dynamically.
vfio.c:1742: warning: Function parameter or member 'caps' not described in 'vfio_info_cap_add'
vfio.c:1742: warning: Function parameter or member 'size' not described in 'vfio_info_cap_add'
vfio.c:1742: warning: Function parameter or member 'id' not described in 'vfio_info_cap_add'
vfio.c:1742: warning: Function parameter or member 'version' not described in 'vfio_info_cap_add'
vfio.c:1742: warning: expecting prototype for Sub(). Prototype was for vfio_info_cap_add() instead
vfio.c:2276: warning: This comment starts with '/**', but isn't a kernel-doc comment. Refer Documentation/doc-guide/kernel-doc.rst
* Module/class support
vfio.c:2276: warning: missing initial short description on line:
* Module/class support
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Reported-by: kernel test robot <lkp@intel.com>
Cc: Jason Gunthorpe <jgg@nvidia.com>
Cc: Alex Williamson <alex.williamson@redhat.com>
Cc: Eric Auger <eric.auger@redhat.com>
Cc: Cornelia Huck <cohuck@redhat.com>
Cc: kvm@vger.kernel.org
Link: https://lore.kernel.org/r/38a9cb92-a473-40bf-b8f9-85cc5cfc2da4@infradead.org
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
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Pull kvm fixes from Paolo Bonzini:
"ARM64:
- Fix constant sign extension affecting TCR_EL2 and preventing
running on ARMv8.7 models due to spurious bits being set
- Fix use of helpers using PSTATE early on exit by always sampling it
as soon as the exit takes place
- Move pkvm's 32bit handling into a common helper
RISC-V:
- Fix incorrect KVM_MAX_VCPUS value
- Unmap stage2 mapping when deleting/moving a memslot
x86:
- Fix and downgrade BUG_ON due to uninitialized cache
- Many APICv and MOVE_ENC_CONTEXT_FROM fixes
- Correctly emulate TLB flushes around nested vmentry/vmexit and when
the nested hypervisor uses VPID
- Prevent modifications to CPUID after the VM has run
- Other smaller bugfixes
Generic:
- Memslot handling bugfixes"
* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (44 commits)
KVM: fix avic_set_running for preemptable kernels
KVM: VMX: clear vmx_x86_ops.sync_pir_to_irr if APICv is disabled
KVM: SEV: accept signals in sev_lock_two_vms
KVM: SEV: do not take kvm->lock when destroying
KVM: SEV: Prohibit migration of a VM that has mirrors
KVM: SEV: Do COPY_ENC_CONTEXT_FROM with both VMs locked
selftests: sev_migrate_tests: add tests for KVM_CAP_VM_COPY_ENC_CONTEXT_FROM
KVM: SEV: move mirror status to destination of KVM_CAP_VM_MOVE_ENC_CONTEXT_FROM
KVM: SEV: initialize regions_list of a mirror VM
KVM: SEV: cleanup locking for KVM_CAP_VM_MOVE_ENC_CONTEXT_FROM
KVM: SEV: do not use list_replace_init on an empty list
KVM: x86: Use a stable condition around all VT-d PI paths
KVM: x86: check PIR even for vCPUs with disabled APICv
KVM: VMX: prepare sync_pir_to_irr for running with APICv disabled
KVM: selftests: page_table_test: fix calculation of guest_test_phys_mem
KVM: x86/mmu: Handle "default" period when selectively waking kthread
KVM: MMU: shadow nested paging does not have PKU
KVM: x86/mmu: Remove spurious TLB flushes in TDP MMU zap collapsible path
KVM: x86/mmu: Use yield-safe TDP MMU root iter in MMU notifier unmapping
KVM: X86: Use vcpu->arch.walk_mmu for kvm_mmu_invlpg()
...
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Commit 98e1385ef24b ("include/linux/radix-tree.h: replace kernel.h with
the necessary inclusions") broke the radix tree test suite in two
different ways; first by including math.h which didn't exist in the
tools directory, and second by removing an implicit include of
spinlock.h before lockdep.h. Fix both issues.
Cc: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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The Kconfig symbol for R10000 ll/sc errata workaround in the MIPS JIT was
misspelled, causing the workaround to not take effect when enabled.
Fixes: 72570224bb8f ("mips, bpf: Add JIT workarounds for CPU errata")
Reported-by: Lukas Bulwahn <lukas.bulwahn@gmail.com>
Signed-off-by: Johan Almbladh <johan.almbladh@anyfinetworks.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20211130160824.3781635-1-johan.almbladh@anyfinetworks.com
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On some AMD hardware laptops, the system fails communicating with the
PMC when entering s2idle and the machine is battery powered.
Hardware description: HP Pavilion Aero Laptop 13-be0097nr
CPU: AMD Ryzen 7 5800U with Radeon Graphics
GPU: 03:00.0 VGA compatible controller [0300]: Advanced Micro Devices,
Inc. [AMD/ATI] Device [1002:1638] (rev c1)
Detailed description of the problem (and investigation) here:
https://gitlab.freedesktop.org/drm/amd/-/issues/1799
Patch is a single line: reduce the polling delay in half, from 100uSec
to 50uSec when waiting for a change in state from the PMC after a
write command operation.
After changing the delay, I did not see a single failure on this
machine (I have this fix for now more than one week and s2idle worked
every single time on battery power).
Cc: stable@vger.kernel.org
Acked-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Signed-off-by: Fabrizio Bertocci <fabriziobertocci@gmail.com>
Link: https://lore.kernel.org/r/CADtzkx7TdfbwtaVEXUdD6YXPey52E-nZVQNs+Z41DTx7gqMqtw@mail.gmail.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
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'cmd_error' is not necessarily initialized on some error paths in
mmc_send_tuning(). Initialize it.
Fixes: 2c9017d0b5d3 ("mmc: renesas_sdhi: abort tuning when timeout detected")
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20211130132309.18246-1-wsa+renesas@sang-engineering.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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Calling dma_resv_add_excl_fence() with the fence as NULL and expecting
that that this frees up the fences is simply abuse of the internals of
the dma_resv object.
v2: drop the fence pruning completely.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20211129120659.1815-4-christian.koenig@amd.com
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This is just abusing internals of the dma_resv object.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20211129120659.1815-3-christian.koenig@amd.com
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The signaled bit is already used for quick testing if a fence is signaled.
Signed-off-by: Maarten Lankhorst <maarten.lankhorst@linux.intel.com>
Acked-by: Christian König <christian.koenig@amd.com>
Link: https://patchwork.freedesktop.org/patch/460722/
Signed-off-by: Christian König <christian.koenig@amd.com>
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Before commit 86585c61972f ("hwmon: (pwm-fan) stop using legacy
PWM functions and some cleanups") pwm_apply_state() was called
unconditionally in pwm_fan_probe(). In this commit this direct
call was replaced by a call to __set_pwm(ct, MAX_PWM) which
however is a noop if ctx->pwm_value already matches the value to
set.
After probe the fan is supposed to run at full speed, and the
internal driver state suggests it does, but this isn't asserted
and depending on bootloader and pwm low-level driver, the fan
might just be off.
So drop setting pwm_value to MAX_PWM to ensure the check in
__set_pwm doesn't make it exit early and the fan goes on as
intended.
Cc: stable@vger.kernel.org
Fixes: 86585c61972f ("hwmon: (pwm-fan) stop using legacy PWM functions and some cleanups")
Signed-off-by: Billy Tsai <billy_tsai@aspeedtech.com>
Reviewed-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20211130092212.17783-1-billy_tsai@aspeedtech.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
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The initial implementation of migrate_disable() for mainline was a
wrapper around preempt_disable(). RT kernels substituted this with a
real migrate disable implementation.
Later on mainline gained true migrate disable support, but neither
documentation nor affected code were updated.
Remove stale comments claiming that migrate_disable() is PREEMPT_RT only.
Don't use __this_cpu_inc() in the !PREEMPT_RT path because preemption is
not disabled and the RMW operation can be preempted.
Fixes: 74d862b682f51 ("sched: Make migrate_disable/enable() independent of RT")
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20211127163200.10466-3-bigeasy@linutronix.de
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The initial implementation of migrate_disable() for mainline was a
wrapper around preempt_disable(). RT kernels substituted this with
a real migrate disable implementation.
Later on mainline gained true migrate disable support, but the
documentation was not updated.
Update the documentation, remove the claims about migrate_disable()
mapping to preempt_disable() on non-PREEMPT_RT kernels.
Fixes: 74d862b682f51 ("sched: Make migrate_disable/enable() independent of RT")
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20211127163200.10466-2-bigeasy@linutronix.de
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Keep the HDA_CODEC_ENTRY entries sorted by the codec VID. ADL-P
is the only misplaced Intel HDMI codec.
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20211130124732.696896-2-kai.vehmanen@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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Add HD Audio PCI ID and HDMI codec vendor ID for Intel DG2.
Reviewed-by: Uma Shankar <uma.shankar@intel.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20211130124732.696896-1-kai.vehmanen@linux.intel.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
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I'm not sure why it is useful to know the number of fences
in the reservation object, but we try to avoid exposing the
dma_resv_shared_list() function.
So use the iterator instead. If more information is desired
we could use dma_resv_describe() as well.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20211129120659.1815-5-christian.koenig@amd.com
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On the latest Lenovo Thinkstation laptops, we often experience the
speaker failure after rebooting, check the dmesg, we could see:
sof-audio-pci-intel-tgl 0000:00:1f.3: codec #0 probe error, ret: -5
The analogue codec on the machine is ALC287, then we designed a
testcase to reboot and check the codec probing result repeatedly, we
found the analogue codec probing always failed at least once within
several minutes to several hours (roughly 1 reboot per min). This
issue happens on all laptops of this Thinkstation model, but with
legacy HDA driver, we couldn't reproduce this issue on those laptops.
And so far, this issue is not reproduced on machines which don't
belong to this model.
We tried to make the hda_dsp_ctrl_init_chip() same as
hda_intel_init_chip() which is the controller init routine in the
legacy HDA driver, but it didn't help.
We found when issue happens, the resp is -1, and if we let driver
re-run send_cmd() and get_response(), it will get the correct response
10ec0287, then driver continues the rest work, finally boot to the
desktop and all audio function work well.
Here adding codec probing retries to 3 times, it could fix the issue
on this Thinkstation model, and it doesn't bring impact to other
machines.
Reviewed-by: Bard Liao <bard.liao@intel.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Signed-off-by: Hui Wang <hui.wang@canonical.com>
Signed-off-by: Kai Vehmanen <kai.vehmanen@linux.intel.com>
Link: https://lore.kernel.org/r/20211130090606.529348-1-kai.vehmanen@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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The "index" is potentially used without being initialized on the error
path.
Fixes: fc329c1de498 ("ASoC: amd: add platform devices for acp6x pdm driver and dmic driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Link: https://lore.kernel.org/r/20211130125633.GA24941@kili
Signed-off-by: Mark Brown <broonie@kernel.org>
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Previously, the DAI template was used directly, which lead to
fun bugs such as "why is my channels_max changing?" when one
instantiated more than one i2s_tdm IP block in a device tree.
This change makes it so that we instead duplicate the template
struct, and then use that.
Fixes: 081068fd6414 ("ASoC: rockchip: add support for i2s-tdm controller")
Signed-off-by: Nicolas Frattaroli <frattaroli.nicolas@gmail.com>
Link: https://lore.kernel.org/r/20211125084900.417102-1-frattaroli.nicolas@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>
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avic_set_running() passes the current CPU to avic_vcpu_load(), albeit
via vcpu->cpu rather than smp_processor_id(). If the thread is migrated
while avic_set_running runs, the call to avic_vcpu_load() can use a stale
value for the processor id. Avoid this by blocking preemption over the
entire execution of avic_set_running().
Reported-by: Sean Christopherson <seanjc@google.com>
Fixes: 8221c1370056 ("svm: Manage vcpu load/unload when enable AVIC")
Cc: stable@vger.kernel.org
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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There is nothing to synchronize if APICv is disabled, since neither
other vCPUs nor assigned devices can set PIR.ON.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Add Alexandra and Wenjia as maintainers for drivers/s390/net and iucv.
Also, remove myself as maintainer for these areas.
Signed-off-by: Karsten Graul <kgraul@linux.ibm.com>
Acked-by: Alexandra Winter <wintera@linux.ibm.com>
Acked-by: Wenjia Zhang <wenjia@linux.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The commit c55211892f46 ("dpaa2-eth: support PTP Sync packet one-step
timestamping") forgets to destroy workqueue at the end of remove
function.
Fix this by adding destroy_workqueue before fsl_mc_portal_free and
free_netdev.
Fixes: c55211892f46 ("dpaa2-eth: support PTP Sync packet one-step timestamping")
Signed-off-by: Dongliang Mu <mudongliangabcd@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Fix a bug in which the receiving of packets can stop in the zero-copy
driver. Ice HW ignores 3 lower bits from QRX_TAIL register, which means
that tail is bumped only on intervals of 8. Currently with XSK RX
batching in place, ice_alloc_rx_bufs_zc() clears the status_error0 only
of the last descriptor that has been allocated/taken from the XSK buffer
pool. status_error0 includes DD bit that is looked upon by the
ice_clean_rx_irq_zc() to tell if a descriptor can be processed.
The bug can be triggered when driver updates the ntu but not the
QRX_TAIL, so HW wouldn't have a chance to write to the ready
descriptors. Later on driver moves the ntc to the mentioned set of
descriptors and interprets them as a ready to be processed, since
corresponding DD bits were not cleared nor any writeback has happened
that would clear it. This can then lead to ntc == ntu case which means
that ring is empty and no further packet processing.
Fix the XSK traffic hang that can be observed when l2fwd scenario from
xdpsock is used by making sure that status_error0 is cleared for each
descriptor that is fed to HW and therefore we are sure that driver will
not processed non-valid DD bits. This will also prevent the driver from
processing the descriptors that were allocated in favor of the
previously processed ones, but writeback didn't happen yet.
Fixes: db804cfc21e9 ("ice: Use the xsk batched rx allocation interface")
Signed-off-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Reviewed-by: Alexander Lobakin <alexandr.lobakin@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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'bitmap_fill()' fills a bitmap one 'long' at a time.
It is likely that an exact number of bits is expected.
Use 'bitmap_set()' instead in order not to set unexpected bits.
Fixes: e531f76757eb ("net: mvpp2: handle cases where more CPUs are available than s/w threads")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: David S. Miller <davem@davemloft.net>
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It has been observed that with certain monitors such as the HP Z27n,
the register 0x825e reads a value of 0x79 when the HDMI cable is
connected and 0x78 when it is disconnected, i.e. bit 0 appears
to correspond to the HDMI connection status and bit 2 is never
set. Therefore, change the driver to check bit 0 instead of bit 2.
Signed-off-by: Peter Collingbourne <pcc@google.com>
Link: https://linux-review.googlesource.com/id/I7e76411127e1ce4988a3f6d0c8ba5f1c3d880c23
Reviewed-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Link: https://patchwork.freedesktop.org/patch/msgid/20211117020724.2647769-1-pcc@google.com
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Link drm_fb_cma_helper.o into drm_cma_helper.ko if CONFIG_DRM_KMS_HELPER
has been set. Remove CONFIG_DRM_KMS_CMA_HELPER config option. Selecting
KMS helpers and CMA will now automatically enable CMA KMS helpers.
Some drivers' Kconfig files did not correctly select KMS or CMA helpers.
Fix this as part of the change.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20211106193509.17472-3-tzimmermann@suse.de
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The MIPI DBI helpers access struct drm_gem_cma_object.vaddr in a
few places. Replace all instances with the correct generic GEM
functions. Use drm_gem_fb_vmap() for mapping a framebuffer's GEM
objects and drm_gem_fb_vunmap() for unmapping them. This removes
the dependency on CMA helpers within MIPI DBI.
Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Reviewed-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Link: https://patchwork.freedesktop.org/patch/msgid/20211106193509.17472-2-tzimmermann@suse.de
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dmaengine_terminate_all() is deprecated in favor of explicitly saying if
it should be sync or async. Here, we use dmaengine_terminate_sync in
i2c_xfer and i2c_smbus_xfer handlers and rely on
dmaengine_terminate_async within interrupt handlers
(transmission error cases).
dmaengine_synchronize is added within i2c_xfer and i2c_smbus_xfer handler
to finalize terminate started in interrupt handlers.
Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
Reviewed-by: Pierre-Yves MORDRET <pierre-yves.mordret@foss.st.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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In case of receiving a NACK, the dma transfer should be stopped
to avoid feeding data into the FIFO.
Also ensure to properly return the proper error code and avoid
waiting for the end of the dma completion in case of
error happening during the transmission.
Fixes: 7ecc8cfde553 ("i2c: i2c-stm32f7: Add DMA support")
Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
Reviewed-by: Pierre-Yves MORDRET <pierre-yves.mordret@foss.st.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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When getting an access timeout, ensure that the bus is in a proper
state prior to returning the error.
Fixes: aeb068c57214 ("i2c: i2c-stm32f7: add driver")
Signed-off-by: Alain Volmat <alain.volmat@foss.st.com>
Reviewed-by: Pierre-Yves MORDRET <pierre-yves.mordret@foss.st.com>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
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Generally, kvm->lock is not taken for a long time, but
sev_lock_two_vms is different: it takes vCPU locks
inside, so userspace can hold it back just by calling
a vCPU ioctl. Play it safe and use mutex_lock_killable.
Message-Id: <20211123005036.2954379-13-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Taking the lock is useless since there are no other references,
and there are already accesses (e.g. to sev->enc_context_owner)
that do not take it. So get rid of it.
Reviewed-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20211123005036.2954379-12-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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VMs that mirror an encryption context rely on the owner to keep the
ASID allocated. Performing a KVM_CAP_VM_MOVE_ENC_CONTEXT_FROM
would cause a dangling ASID:
1. copy context from A to B (gets ref to A)
2. move context from A to L (moves ASID from A to L)
3. close L (releases ASID from L, B still references it)
The right way to do the handoff instead is to create a fresh mirror VM
on the destination first:
1. copy context from A to B (gets ref to A)
[later] 2. close B (releases ref to A)
3. move context from A to L (moves ASID from A to L)
4. copy context from L to M
So, catch the situation by adding a count of how many VMs are
mirroring this one's encryption context.
Fixes: 0b020f5af092 ("KVM: SEV: Add support for SEV-ES intra host migration")
Message-Id: <20211123005036.2954379-11-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Now that we have a facility to lock two VMs with deadlock
protection, use it for the creation of mirror VMs as well. One of
COPY_ENC_CONTEXT_FROM(dst, src) and COPY_ENC_CONTEXT_FROM(src, dst)
would always fail, so the combination is nonsensical and it is okay to
return -EBUSY if it is attempted.
This sidesteps the question of what happens if a VM is
MOVE_ENC_CONTEXT_FROM'd at the same time as it is
COPY_ENC_CONTEXT_FROM'd: the locking prevents that from
happening.
Cc: Peter Gonda <pgonda@google.com>
Cc: Sean Christopherson <seanjc@google.com>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20211123005036.2954379-10-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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I am putting the tests in sev_migrate_tests because the failure conditions are
very similar and some of the setup code can be reused, too.
The tests cover both successful creation of a mirror VM, and error
conditions.
Cc: Peter Gonda <pgonda@google.com>
Cc: Sean Christopherson <seanjc@google.com>
Message-Id: <20211123005036.2954379-9-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Allow intra-host migration of a mirror VM; the destination VM will be
a mirror of the same ASID as the source.
Fixes: b56639318bb2 ("KVM: SEV: Add support for SEV intra host migration")
Reviewed-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20211123005036.2954379-8-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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This was broken before the introduction of KVM_CAP_VM_MOVE_ENC_CONTEXT_FROM,
but technically harmless because the region list was unused for a mirror
VM. However, it is untidy and it now causes a NULL pointer access when
attempting to move the encryption context of a mirror VM.
Fixes: 54526d1fd593 ("KVM: x86: Support KVM VMs sharing SEV context")
Message-Id: <20211123005036.2954379-7-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Encapsulate the handling of the migration_in_progress flag for both VMs in
two functions sev_lock_two_vms and sev_unlock_two_vms. It does not matter
if KVM_CAP_VM_MOVE_ENC_CONTEXT_FROM locks the destination struct kvm a bit
later, and this change 1) keeps the cleanup chain of labels smaller 2)
makes it possible for KVM_CAP_VM_COPY_ENC_CONTEXT_FROM to reuse the logic.
Cc: Peter Gonda <pgonda@google.com>
Cc: Sean Christopherson <seanjc@google.com>
Message-Id: <20211123005036.2954379-6-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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list_replace_init cannot be used if the source is an empty list,
because "new->next->prev = new" will overwrite "old->next":
new old
prev = new, next = new prev = old, next = old
new->next = old->next prev = new, next = old prev = old, next = old
new->next->prev = new prev = new, next = old prev = old, next = new
new->prev = old->prev prev = old, next = old prev = old, next = old
new->next->prev = new prev = old, next = old prev = new, next = new
The desired outcome instead would be to leave both old and new the same
as they were (two empty circular lists). Use list_cut_before, which
already has the necessary check and is documented to discard the
previous contents of the list that will hold the result.
Fixes: b56639318bb2 ("KVM: SEV: Add support for SEV intra host migration")
Reviewed-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20211123005036.2954379-5-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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Currently, checks for whether VT-d PI can be used refer to the current
status of the feature in the current vCPU; or they more or less pick
vCPU 0 in case a specific vCPU is not available.
However, these checks do not attempt to synchronize with changes to
the IRTE. In particular, there is no path that updates the IRTE when
APICv is re-activated on vCPU 0; and there is no path to wakeup a CPU
that has APICv disabled, if the wakeup occurs because of an IRTE
that points to a posted interrupt.
To fix this, always go through the VT-d PI path as long as there are
assigned devices and APICv is available on both the host and the VM side.
Since the relevant condition was copied over three times, take the hint
and factor it into a separate function.
Suggested-by: Sean Christopherson <seanjc@google.com>
Cc: stable@vger.kernel.org
Reviewed-by: Sean Christopherson <seanjc@google.com>
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Reviewed-by: David Matlack <dmatlack@google.com>
Message-Id: <20211123004311.2954158-5-pbonzini@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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