- 28 Nov, 2021 13 commits
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Dmitry Baryshkov authored
Move DPHY/CPHY setting from msm_dsi_host_set_src_pll() to new function msm_dsi_host_set_phy_mode(). Signed-off-by:
Dmitry Baryshkov <dmitry.baryshkov@linaro.org> Reviewed-by:
Abhinav Kumar <abhinavk@codeaurora.org> Link: https://lore.kernel.org/r/20211006204828.1218225-1-dmitry.baryshkov@linaro.orgSigned-off-by:
Rob Clark <robdclark@chromium.org>
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Dmitry Baryshkov authored
eDP driver is being removed, so drop bindings description. Signed-off-by:
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Dmitry Baryshkov authored
MSM DRM driver has support for eDP block present on MSM 8x74/8x84 SoC families. However since addition back in 2015 this driver received only generic fixes. No actual devices with these SoCs supported upstream (or by the community) seem to support eDP panels. Judging from downstream kernels the eDP was present only on MSM8974 LIQUID or on APQ8084 CDP. Remove this driver. Signed-off-by:
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Dmitry Baryshkov authored
Prepare for removing old eDP support present in 8x74/8x84 SoC families. No devices present in mainline support eDP ports. Signed-off-by:
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Dmitry Baryshkov authored
Do not cache hw_pipe's sblk in dpu_plane. Use pdpu->pipe_hw->cap->sblk directly. Signed-off-by:
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Dmitry Baryshkov authored
Do not cache hw_pipe's features in dpu_plane. Use pdpu->pipe_hw->cap->features directly. Signed-off-by:
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Dmitry Baryshkov authored
Remove struct dpu_hw_pipe_cdp_cfg instance from dpu_plane, it is an interim configuration structure. Allocate it on stack instead. Signed-off-by:
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Dmitry Baryshkov authored
Simplify code surrounding CSC table setup by removing struct dpu_csc_cfg pointer from dpu_plane and getting it directly at the CSC setup time. Signed-off-by:
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Dmitry Baryshkov authored
struct dpu_hw_pipe_cfg represents an interim state during atomic update/color fill, so move it out of struct dpu_plane. Signed-off-by:
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Dmitry Baryshkov authored
The stage_cfg is not used outside of _dpu_crtc_blend_setup(), so remove the temporary config from global struct. Signed-off-by:
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Dmitry Baryshkov authored
Use plane->name instead of artificial pipe_name. Signed-off-by:
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Dmitry Baryshkov authored
The pipe_qos_cfg is used only in _dpu_plane_set_qos_ctrl(), so remove it from the dpu_plane struct and allocate it on stack when necessary. Signed-off-by:
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Dmitry Baryshkov authored
LUT levels are setup outside of setup_qos_ctrl, so remove them from the struct dpu_hw_pipe_qos_cfg. Signed-off-by:
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- 26 Nov, 2021 1 commit
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Arnd Bergmann authored
When CONFIG_COMMON_CLOCK is disabled, the 8996 specific phy code is left out, which results in a link failure: ld: drivers/gpu/drm/msm/hdmi/hdmi_phy.o:(.rodata+0x3f0): undefined reference to `msm_hdmi_phy_8996_cfg' This was only exposed after it became possible to build test the driver without the clock interfaces. Make COMMON_CLK a hard dependency for compile testing, and simplify it a little based on that. Fixes: b3ed524f ("drm/msm: allow compile_test on !ARM") Reported-by:
Randy Dunlap <rdunlap@infradead.org> Suggested-by:
Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by:
Arnd Bergmann <arnd@arndb.de> Reviewed-by:
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- 22 Nov, 2021 3 commits
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Rob Clark authored
In particular, we need to ensure all the necessary blocks are switched to 64b mode (a5xx+) otherwise the high bits of the address of the BO to snapshot state into will be ignored, resulting in: *** gpu fault: ttbr0=0000000000000000 iova=0000000000012000 dir=READ type=TRANSLATION source=CP (0,0,0,0) platform 506a000.gmu: [drm:a6xx_gmu_set_oob] *ERROR* Timeout waiting for GMU OOB set BOOT_SLUMBER: 0x0 Fixes: 4f776f45 ("drm/msm/gpu: Convert the GPU show function to use the GPU state") Signed-off-by:
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Douglas Anderson authored
If you happened to try to access `/dev/drm_dp_aux` devices provided by the MSM DP AUX driver too early at bootup you could go boom. Let's avoid that by only allowing AUX transfers when the controller is powered up. Specifically the crash that was seen (on Chrome OS 5.4 tree with relevant backports): Kernel panic - not syncing: Asynchronous SError Interrupt CPU: 0 PID: 3131 Comm: fwupd Not tainted 5.4.144-16620-g28af11b73efb #1 Hardware name: Google Lazor (rev3+) with KB Backlight (DT) Call trace: dump_backtrace+0x0/0x14c show_stack+0x20/0x2c dump_stack+0xac/0x124 panic+0x150/0x390 nmi_panic+0x80/0x94 arm64_serror_panic+0x78/0x84 do_serror+0x0/0x118 do_serror+0xa4/0x118 el1_error+0xbc/0x160 dp_catalog_aux_write_data+0x1c/0x3c dp_aux_cmd_fifo_tx+0xf0/0x1b0 dp_aux_transfer+0x1b0/0x2bc drm_dp_dpcd_access+0x8c/0x11c drm_dp_dpcd_read+0x64/0x10c auxdev_read_iter+0xd4/0x1c4 I did a little bit of tracing and found that: * We register the AUX device very early at bootup. * Power isn't actually turned on for my system until hpd_event_thread() -> dp_display_host_init() -> dp_power_init() * You can see that dp_power_init() calls dp_aux_init() which is where we start allowing AUX channel requests to go through. In general this patch is a bit of a bandaid but at least it gets us out of the current state where userspace acting at the wrong time can fully crash the system. * I think the more proper fix (which requires quite a bit more changes) is to power stuff on while an AUX transfer is happening. This is like the solution we did for ti-sn65dsi86. This might be required for us to move to populating the panel via the DP-AUX bus. * Another fix considered was to dynamically register / unregister. I tried that at <https://crrev.com/c/3169431/3> but it got ugly. Currently there's a bug where the pm_runtime() state isn't tracked properly and that causes us to just keep registering more and more. Signed-off-by:
Douglas Anderson <dianders@chromium.org> Reviewed-by:
Kuogee Hsieh <quic_khsieh@quicinc.com> Reviewed-by:
Abhinav Kumar <quic_abhinavk@quicinc.com> Link: https://lore.kernel.org/r/20211109100403.1.I4e23470d681f7efe37e2e7f1a6466e15e9bb1d72@changeidSigned-off-by:
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Philip Chen authored
If "data_lanes" property of the dsi output endpoint is missing in the DT, num_data_lanes would be 0 by default, which could cause dsi_host_attach() to fail if dsi->lanes is set to a non-zero value by the bridge driver. According to the binding document of msm dsi controller, the input/output endpoint of the controller is expected to have 4 lanes. So let's set num_data_lanes to 4 by default. Signed-off-by:
Philip Chen <philipchen@chromium.org> Reviewed-by:
Stephen Boyd <swboyd@chromium.org> Link: https://lore.kernel.org/r/20211030100812.1.I6cd9af36b723fed277d34539d3b2ba4ca233ad2d@changeidSigned-off-by:
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- 21 Nov, 2021 11 commits
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Rob Clark authored
Looks like 658f4c82 ("drm/msm/devfreq: Add 1ms delay before clamping freq") was badly rebased on top of efb8a170 ("drm/msm: Fix devfreq NULL pointer dereference on a3xx") and ended up with the NULL check in the wrong place. Fixes: 658f4c82 ("drm/msm/devfreq: Add 1ms delay before clamping freq") Signed-off-by:
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Rob Clark authored
This was supposed to be a relative timer, not absolute. Fixes: 658f4c82 ("drm/msm/devfreq: Add 1ms delay before clamping freq") Signed-off-by:
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Akhil P Oommen authored
Avoid a possible uninitialized use of gpu_scid variable to fix the below smatch warning: drivers/gpu/drm/msm/adreno/a6xx_gpu.c:1480 a6xx_llc_activate() error: uninitialized symbol 'gpu_scid'. Reported-by:
Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
Akhil P Oommen <akhilpo@codeaurora.org> Link: https://lore.kernel.org/r/20211118154903.3.Ie4ac321feb10168af569d9c2b4cf6828bed8122c@changeidSigned-off-by:
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Akhil P Oommen authored
Fix the below null pointer dereference in msm_ioctl_gem_submit(): 26545.260705: Call trace: 26545.263223: kref_put+0x1c/0x60 26545.266452: msm_ioctl_gem_submit+0x254/0x744 26545.270937: drm_ioctl_kernel+0xa8/0x124 26545.274976: drm_ioctl+0x21c/0x33c 26545.278478: drm_compat_ioctl+0xdc/0xf0 26545.282428: __arm64_compat_sys_ioctl+0xc8/0x100 26545.287169: el0_svc_common+0xf8/0x250 26545.291025: do_el0_svc_compat+0x28/0x54 26545.295066: el0_svc_compat+0x10/0x1c 26545.298838: el0_sync_compat_handler+0xa8/0xcc 26545.303403: el0_sync_compat+0x188/0x1c0 26545.307445: Code: d503201f d503201f 52800028 4b0803e8 (b8680008) 26545.318799: Kernel panic - not syncing: Oops: Fatal exception Signed-off-by:
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Rob Clark authored
Mesa attempts to allocate a cached-coherent buffer in order to determine if cached-coherent is supported. Resulting in seeing this error message once per process with newer mesa. But no reason for this to be more than a debug msg. Signed-off-by:
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Rob Clark authored
Reported-by:
kernel test robot <lkp@intel.com> Signed-off-by:
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Rob Clark authored
When converting to use an idr to map userspace fence seqno values back to a dma_fence, we lost the error return when userspace passes seqno that is larger than the last submitted fence. Restore this check. Reported-by:
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Rob Clark authored
We weren't dropping the submitqueue reference in all paths. In particular, when the fence has already been signalled. Split out a helper to simplify handling this in the various different return paths. Fixes: a61acbbe ("drm/msm: Track "seqno" fences by idr") Signed-off-by:
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Douglas Anderson authored
In commit 510410bf ("drm/msm: Implement mmap as GEM object function") we switched to a new/cleaner method of doing things. That's good, but we missed a little bit. Before that commit, we used to _first_ run through the drm_gem_mmap_obj() case where `obj->funcs->mmap()` was NULL. That meant that we ran: vma->vm_flags |= VM_IO | VM_PFNMAP | VM_DONTEXPAND | VM_DONTDUMP; vma->vm_page_prot = pgprot_writecombine(vm_get_page_prot(vma->vm_flags)); vma->vm_page_prot = pgprot_decrypted(vma->vm_page_prot); ...and _then_ we modified those mappings with our own. Now that `obj->funcs->mmap()` is no longer NULL we don't run the default code. It looks like the fact that the vm_flags got VM_IO / VM_DONTDUMP was important because we're now getting crashes on Chromebooks that use ARC++ while logging out. Specifically a crash that looks like this (this is on a 5.10 kernel w/ relevant backports but also seen on a 5.15 kernel): Unable to handle kernel paging request at virtual address ffffffc008000000 Mem abort info: ESR = 0x96000006 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 Data abort info: ISV = 0, ISS = 0x00000006 CM = 0, WnR = 0 swapper pgtable: 4k pages, 39-bit VAs, pgdp=000000008293d000 [ffffffc008000000] pgd=00000001002b3003, p4d=00000001002b3003, pud=00000001002b3003, pmd=0000000000000000 Internal error: Oops: 96000006 [#1] PREEMPT SMP [...] CPU: 7 PID: 15734 Comm: crash_dump64 Tainted: G W 5.10.67 #1 [...] Hardware name: Qualcomm Technologies, Inc. sc7280 IDP SKU2 platform (DT) pstate: 80400009 (Nzcv daif +PAN -UAO -TCO BTYPE=--) pc : __arch_copy_to_user+0xc0/0x30c lr : copyout+0xac/0x14c [...] Call trace: __arch_copy_to_user+0xc0/0x30c copy_page_to_iter+0x1a0/0x294 process_vm_rw_core+0x240/0x408 process_vm_rw+0x110/0x16c __arm64_sys_process_vm_readv+0x30/0x3c el0_svc_common+0xf8/0x250 do_el0_svc+0x30/0x80 el0_svc+0x10/0x1c el0_sync_handler+0x78/0x108 el0_sync+0x184/0x1c0 Code: f8408423 f80008c3 910020c6 36100082 (b8404423) Let's add the two flags back in. While we're at it, the fact that we aren't running the default means that we _don't_ need to clear out VM_PFNMAP, so remove that and save an instruction. NOTE: it was confirmed that VM_IO was the important flag to fix the problem I was seeing, but adding back VM_DONTDUMP seems like a sane thing to do so I'm doing that too. Fixes: 510410bf ("drm/msm: Implement mmap as GEM object function") Reported-by:
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Rob Clark authored
Reported-by:
Steev Klimaszewski <steev@kali.org> Reviewed-by:
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Douglas Anderson authored
In commit 142639a5 ("drm/msm/a6xx: fix crashstate capture for A650") we changed a6xx_get_gmu_registers() to read 3 sets of registers. Unfortunately, we didn't change the memory allocation for the array. That leads to a KASAN warning (this was on the chromeos-5.4 kernel, which has the problematic commit backported to it): BUG: KASAN: slab-out-of-bounds in _a6xx_get_gmu_registers+0x144/0x430 Write of size 8 at addr ffffff80c89432b0 by task A618-worker/209 CPU: 5 PID: 209 Comm: A618-worker Tainted: G W 5.4.156-lockdep #22 Hardware name: Google Lazor Limozeen without Touchscreen (rev5 - rev8) (DT) Call trace: dump_backtrace+0x0/0x248 show_stack+0x20/0x2c dump_stack+0x128/0x1ec print_address_description+0x88/0x4a0 __kasan_report+0xfc/0x120 kasan_report+0x10/0x18 __asan_report_store8_noabort+0x1c/0x24 _a6xx_get_gmu_registers+0x144/0x430 a6xx_gpu_state_get+0x330/0x25d4 msm_gpu_crashstate_capture+0xa0/0x84c recover_worker+0x328/0x838 kthread_worker_fn+0x32c/0x574 kthread+0x2dc/0x39c ret_from_fork+0x10/0x18 Allocated by task 209: __kasan_kmalloc+0xfc/0x1c4 kasan_kmalloc+0xc/0x14 kmem_cache_alloc_trace+0x1f0/0x2a0 a6xx_gpu_state_get+0x164/0x25d4 msm_gpu_crashstate_capture+0xa0/0x84c recover_worker+0x328/0x838 kthread_worker_fn+0x32c/0x574 kthread+0x2dc/0x39c ret_from_fork+0x10/0x18 Fixes: 142639a5 ("drm/msm/a6xx: fix crashstate capture for A650") Signed-off-by:
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- 14 Nov, 2021 12 commits
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Linus Torvalds authored
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Gustavo A. R. Silva authored
Add Kconfig support for -Wimplicit-fallthrough for both GCC and Clang. The compiler option is under configuration CC_IMPLICIT_FALLTHROUGH, which is enabled by default. Special thanks to Nathan Chancellor who fixed the Clang bug[1][2]. This bugfix only appears in Clang 14.0.0, so older versions still contain the bug and -Wimplicit-fallthrough won't be enabled for them, for now. This concludes a long journey and now we are finally getting rid of the unintentional fallthrough bug-class in the kernel, entirely. :) Link: https://github.com/llvm/llvm-project/commit/9ed4a94d6451046a51ef393cd62f00710820a7e8 [1] Link: https://bugs.llvm.org/show_bug.cgi?id=51094 [2] Link: https://github.com/KSPP/linux/issues/115 Link: https://github.com/ClangBuiltLinux/linux/issues/236Co-developed-by:
Kees Cook <keescook@chromium.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by:
Gustavo A. R. Silva <gustavoars@kernel.org> Reviewed-by:
Nathan Chancellor <nathan@kernel.org> Tested-by:
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git://git.kernel.org/pub/scm/fs/xfs/xfs-linuxLinus Torvalds authored
Pull xfs cleanups from Darrick Wong: "The most 'exciting' aspect of this branch is that the xfsprogs maintainer and I have worked through the last of the code discrepancies between kernel and userspace libxfs such that there are no code differences between the two except for #includes. IOWs, diff suffices to demonstrate that the userspace tools behave the same as the kernel, and kernel-only bits are clearly marked in the /kernel/ source code instead of just the userspace source. Summary: - Clean up open-coded swap() calls. - A little bit of #ifdef golf to complete the reunification of the kernel and userspace libxfs source code" * tag 'xfs-5.16-merge-5' of git://git.kernel.org/pub/scm/fs/xfs/xfs-linux: xfs: sync xfs_btree_split macros with userspace libxfs xfs: #ifdef out perag code for userspace xfs: use swap() to make dabtree code cleaner -
git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linuxLinus Torvalds authored
Pull more parisc fixes from Helge Deller: "Fix a build error in stracktrace.c, fix resolving of addresses to function names in backtraces, fix single-stepping in assembly code and flush userspace pte's when using set_pte_at()" * tag 'for-5.16/parisc-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux: parisc/entry: fix trace test in syscall exit path parisc: Flush kernel data mapping in set_pte_at() when installing pte for user page parisc: Fix implicit declaration of function '__kernel_text_address' parisc: Fix backtrace to always include init funtion names
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git://git.libc.org/linux-shLinus Torvalds authored
Pull arch/sh updates from Rich Felker. * tag 'sh-for-5.16' of git://git.libc.org/linux-sh: sh: pgtable-3level: Fix cast to pointer from integer of different size sh: fix READ/WRITE redefinition warnings sh: define __BIG_ENDIAN for math-emu sh: math-emu: drop unused functions sh: fix kconfig unmet dependency warning for FRAME_POINTER sh: Cleanup about SPARSE_IRQ sh: kdump: add some attribute to function maple: fix wrong return value of maple_bus_init(). sh: boot: avoid unneeded rebuilds under arch/sh/boot/compressed/ sh: boot: add intermediate vmlinux.bin* to targets instead of extra-y sh: boards: Fix the cacography in irq.c sh: check return code of request_irq sh: fix trivial misannotations
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git://git.armlinux.org.uk/~rmk/linux-armLinus Torvalds authored
Pull ARM fixes from Russell King: - Fix early_iounmap - Drop cc-option fallbacks for architecture selection * tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: ARM: 9156/1: drop cc-option fallbacks for architecture selection ARM: 9155/1: fix early early_iounmap()
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git://git.kernel.org/pub/scm/linux/kernel/git/robh/linuxLinus Torvalds authored
Pull devicetree fixes from Rob Herring: - Two fixes due to DT node name changes on Arm, Ltd. boards - Treewide rename of Ingenic CGU headers - Update ST email addresses - Remove Netlogic DT bindings - Dropping few more cases of redundant 'maxItems' in schemas - Convert toshiba,tc358767 bridge binding to schema * tag 'devicetree-fixes-for-5.16-1' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: dt-bindings: watchdog: sunxi: fix error in schema bindings: media: venus: Drop redundant maxItems for power-domain-names dt-bindings: Remove Netlogic bindings clk: versatile: clk-icst: Ensure clock names are unique of: Support using 'mask' in making device bus id dt-bindings: treewide: Update @st.com email address to @foss.st.com dt-bindings: media: Update maintainers for st,stm32-hwspinlock.yaml dt-bindings: media: Update maintainers for st,stm32-cec.yaml dt-bindings: mfd: timers: Update maintainers for st,stm32-timers dt-bindings: timer: Update maintainers for st,stm32-timer dt-bindings: i2c: imx: hardware do not restrict clock-frequency to only 100 and 400 kHz dt-bindings: display: bridge: Convert toshiba,tc358767.txt to yaml dt-bindings: Rename Ingenic CGU headers to ingenic,*.h
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull timer fix from Thomas Gleixner: "A single fix for POSIX CPU timers to address a problem where POSIX CPU timer delivery stops working for a new child task because copy_process() copies state information which is only valid for the parent task" * tag 'timers-urgent-2021-11-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: posix-cpu-timers: Clear task::posix_cputimers_work in copy_process()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull irq fixes from Thomas Gleixner: "A set of fixes for the interrupt subsystem Core code: - A regression fix for the Open Firmware interrupt mapping code where a interrupt controller property in a node caused a map property in the same node to be ignored. Interrupt chip drivers: - Workaround a limitation in SiFive PLIC interrupt chip which silently ignores an EOI when the interrupt line is masked. - Provide the missing mask/unmask implementation for the CSKY MP interrupt controller. PCI/MSI: - Prevent a use after free when PCI/MSI interrupts are released by destroying the sysfs entries before freeing the memory which is accessed in the sysfs show() function. - Implement a mask quirk for the Nvidia ION AHCI chip which does not advertise masking capability despite implementing it. Even worse the chip comes out of reset with all MSI entries masked, which due to the missing masking capability never get unmasked. - Move the check which prevents accessing the MSI[X] masking for XEN back into the low level accessors. The recent consolidation missed that these accessors can be invoked from places which do not have that check which broke XEN. Move them back to he original place instead of sprinkling tons of these checks all over the code" * tag 'irq-urgent-2021-11-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: of/irq: Don't ignore interrupt-controller when interrupt-map failed irqchip/sifive-plic: Fixup EOI failed when masked irqchip/csky-mpintc: Fixup mask/unmask implementation PCI/MSI: Destroy sysfs before freeing entries PCI: Add MSI masking quirk for Nvidia ION AHCI PCI/MSI: Deal with devices lying about their MSI mask capability PCI/MSI: Move non-mask check back into low level accessors -
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 static call update from Thomas Gleixner: "A single fix for static calls to make the trampoline patching more robust by placing explicit signature bytes after the call trampoline to prevent patching random other jumps like the CFI jump table entries" * tag 'locking-urgent-2021-11-14' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: static_call,x86: Robustify trampoline patching
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull scheduler fixes from Borislav Petkov: - Avoid touching ~100 config files in order to be able to select the preemption model - clear cluster CPU masks too, on the CPU unplug path - prevent use-after-free in cfs - Prevent a race condition when updating CPU cache domains - Factor out common shared part of smp_prepare_cpus() into a common helper which can be called by both baremetal and Xen, in order to fix a booting of Xen PV guests * tag 'sched_urgent_for_v5.16_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: preempt: Restore preemption model selection configs arch_topology: Fix missing clear cluster_cpumask in remove_cpu_topology() sched/fair: Prevent dead task groups from regaining cfs_rq's sched/core: Mitigate race cpus_share_cache()/update_top_cache_domain() x86/smp: Factor out parts of native_smp_prepare_cpus()
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull perf fixes from Borislav Petkov: - Prevent unintentional page sharing by checking whether a page reference to a PMU samples page has been acquired properly before that - Make sure the LBR_SELECT MSR is saved/restored too - Reset the LBR_SELECT MSR when resetting the LBR PMU to clear any residual data left * tag 'perf_urgent_for_v5.16_rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/core: Avoid put_page() when GUP fails perf/x86/vlbr: Add c->flags to vlbr event constraints perf/x86/lbr: Reset LBR_SELECT during vlbr reset
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