- 07 May, 2022 1 commit
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Javier Martinez Canillas authored
Commit d258d00f ("fbdev: efifb: Cleanup fb_info in .fb_destroy rather than .remove") attempted to fix a use-after-free error due driver freeing the fb_info in the .remove handler instead of doing it in .fb_destroy. But ironically that change introduced yet another use-after-free since the fb_info was still used after the free. This should fix for good by freeing the fb_info at the end of the handler. Fixes: d258d00f ("fbdev: efifb: Cleanup fb_info in .fb_destroy rather than .remove") Reported-by:
Ville Syrjälä <ville.syrjala@linux.intel.com> Reported-by:
Andrzej Hajda <andrzej.hajda@intel.com> Signed-off-by:
Javier Martinez Canillas <javierm@redhat.com> Reviewed-by:
Andi Shyti <andi.shyti@linux.intel.com> Reviewed-by:
Thomas Zimmermann <tzimemrmann@suse.de> Signed-off-by:
Lucas De Marchi <lucas.demarchi@intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220506132225.588379-1-javierm@redhat.com
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- 06 May, 2022 7 commits
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Christophe JAILLET authored
If successful ida_simple_get() calls are not undone when needed, some additional memory may be allocated and wasted. Here, an ID between 0 and MAX_INT is required. If this ID is >=100, it is not taken into account and is wasted. It should be released. Instead of calling ida_simple_remove(), take advantage of the 'max' parameter to require the ID not to be too big. Should it be too big, it is not allocated and don't need to be freed. While at it, use ida_alloc_xxx()/ida_free() instead to ida_simple_get()/ida_simple_remove(). The latter is deprecated and more verbose. Fixes: db1a0ae2 ("drm/nouveau/bl: Assign different names to interfaces") Signed-off-by:
Christophe JAILLET <christophe.jaillet@wanadoo.fr> Reviewed-by:
Lyude Paul <lyude@redhat.com> [Fixed formatting warning from checkpatch] Signed-off-by:
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Robin Murphy authored
Even if some IOMMU has registered itself on the platform "bus", that doesn't necessarily mean it provides translation for the device we care about. Replace iommu_present() with a more appropriate check. Signed-off-by:
Robin Murphy <robin.murphy@arm.com> Reviewed-by:
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Javier Martinez Canillas authored
The driver is calling framebuffer_release() in its .remove callback, but this will cause the struct fb_info to be freed too early. Since it could be that a reference is still hold to it if user-space opened the fbdev. This would lead to a use-after-free error if the framebuffer device was unregistered but later a user-space process tries to close the fbdev fd. To prevent this, move the framebuffer_release() call to fb_ops.fb_destroy instead of doing it in the driver's .remove callback. Strictly speaking, the code flow in the driver is still wrong because all the hardware cleanupd (i.e: iounmap) should be done in .remove while the software cleanup (i.e: releasing the framebuffer) should be done in the .fb_destroy handler. But this at least makes to match the behavior before commit 27599aac ("fbdev: Hot-unplug firmware fb devices on forced removal"). Fixes: 27599aac ("fbdev: Hot-unplug firmware fb devices on forced removal") Suggested-by:
Daniel Vetter <daniel.vetter@ffwll.ch> Signed-off-by:
Thomas Zimmermann <tzimmermann@suse.de> Reviewed-by:
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Javier Martinez Canillas authored
The driver is calling framebuffer_release() in its .remove callback, but this will cause the struct fb_info to be freed too early. Since it could be that a reference is still hold to it if user-space opened the fbdev. This would lead to a use-after-free error if the framebuffer device was unregistered but later a user-space process tries to close the fbdev fd. To prevent this, move the framebuffer_release() call to fb_ops.fb_destroy instead of doing it in the driver's .remove callback. Strictly speaking, the code flow in the driver is still wrong because all the hardware cleanupd (i.e: iounmap) should be done in .remove while the software cleanup (i.e: releasing the framebuffer) should be done in the .fb_destroy handler. But this at least makes to match the behavior before commit 27599aac ("fbdev: Hot-unplug firmware fb devices on forced removal"). Fixes: 27599aac ("fbdev: Hot-unplug firmware fb devices on forced removal") Suggested-by:
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Javier Martinez Canillas authored
The driver is calling framebuffer_release() in its .remove callback, but this will cause the struct fb_info to be freed too early. Since it could be that a reference is still hold to it if user-space opened the fbdev. This would lead to a use-after-free error if the framebuffer device was unregistered but later a user-space process tries to close the fbdev fd. To prevent this, move the framebuffer_release() call to fb_ops.fb_destroy instead of doing it in the driver's .remove callback. Strictly speaking, the code flow in the driver is still wrong because all the hardware cleanupd (i.e: iounmap) should be done in .remove while the software cleanup (i.e: releasing the framebuffer) should be done in the .fb_destroy handler. But this at least makes to match the behavior before commit 27599aac ("fbdev: Hot-unplug firmware fb devices on forced removal"). Fixes: 27599aac ("fbdev: Hot-unplug firmware fb devices on forced removal") Suggested-by:
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Daniel Vetter authored
Most fbdev drivers have issues with the fb_info lifetime, because call to framebuffer_release() from their driver's .remove callback, rather than doing from fbops.fb_destroy callback. Doing that will destroy the fb_info too early, while references to it may still exist, leading to a use-after-free error. To prevent this, check the fb_info reference counter when attempting to kfree the data structure in framebuffer_release(). That will leak it but at least will prevent the mentioned error. Signed-off-by:
Daniel Vetter <daniel.vetter@intel.com> Signed-off-by:
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Javier Martinez Canillas authored
This reverts commit aafa025c. That commit attempted to fix a NULL pointer dereference, caused by the struct fb_info associated with a framebuffer device to not longer be valid when the file descriptor was closed. The issue was exposed by commit 27599aac ("fbdev: Hot-unplug firmware fb devices on forced removal"), which added a new path that goes through the struct device removal instead of directly unregistering the fb. Most fbdev drivers have issues with the fb_info lifetime, because call to framebuffer_release() from their driver's .remove callback, rather than doing from fbops.fb_destroy callback. This meant that due to this switch, the fb_info was now destroyed too early, while references still existed, while before it was simply leaked. The patch we're reverting here reinstated that leak, hence "fixed" the regression. But the proper solution is to fix the drivers to not release the fb_info too soon. Suggested-by:
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- 04 May, 2022 1 commit
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Fabien Parent authored
The IT6505 is using functions provided by the DRM_DP_HELPER driver. In order to avoid having the bridge enabled but the helper disabled, let's add a select in order to be sure that the DP helper functions are always available. Fixes: b5c84a9e ("drm/bridge: add it6505 driver") Signed-off-by:
Fabien Parent <fparent@baylibre.com> Reviewed-by:
Neil Armstrong <narmstrong@baylibre.com> Signed-off-by:
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- 03 May, 2022 1 commit
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Javier Martinez Canillas authored
A reference to the framebuffer device struct fb_info is stored in the file private data, but this reference could no longer be valid and must not be accessed directly. Instead, the file_fb_info() accessor function must be used since it does sanity checking to make sure that the fb_info is valid. This can happen for example if the registered framebuffer device is for a driver that just uses a framebuffer provided by the system firmware. In that case, the fbdev core would unregister the framebuffer device when a real video driver is probed and ask to remove conflicting framebuffers. The bug has been present for a long time but commit 27599aac ("fbdev: Hot-unplug firmware fb devices on forced removal") unmasked it since the fbdev core started unregistering the framebuffers' devices associated. Fixes: 27599aac ("fbdev: Hot-unplug firmware fb devices on forced removal") Reported-by:
Maxime Ripard <maxime@cerno.tech> Reported-by:
Junxiao Chang <junxiao.chang@intel.com> Signed-off-by:
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- 26 Apr, 2022 1 commit
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Samuel Holland authored
commit b4bdc4fb ("soc: sunxi: Deal with the MBUS DMA offsets in a central place") added a platform device notifier that sets the DMA offset for all of the display engine frontend and backend devices. The code applying the offset to DMA buffer physical addresses was then removed from the backend driver in commit 756668ba ("drm/sun4i: backend: Remove the MBUS quirks"), but the code subtracting PHYS_OFFSET was left in the frontend driver. As a result, the offset was applied twice in the frontend driver. This likely went unnoticed because it only affects specific configurations (scaling or certain pixel formats) where the frontend is used, on boards with both one of these older SoCs and more than 1 GB of DRAM. In addition, the references to PHYS_OFFSET prevent compiling the driver on architectures where PHYS_OFFSET is not defined. Fixes: b4bdc4fb ("soc: sunxi: Deal with the MBUS DMA offsets in a central place") Reviewed-by:
Jernej Skrabec <jernej.skrabec@gmail.com> Signed-off-by:
Samuel Holland <samuel@sholland.org> Signed-off-by:
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- 21 Apr, 2022 5 commits
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Christian König authored
This reverts commit 461fa7b0. We are missing some inter dependencies here so re-introduce the lock until we have figured out what's missing. Just drop/retake it while adding dependencies. v2: still drop the lock while adding dependencies Signed-off-by:
Christian König <christian.koenig@amd.com> Tested-by: Mikhail Gavrilov <mikhail.v.gavrilov@gmail.com> (v1) Fixes: 461fa7b0 ("drm/amdgpu: remove ctx->lock") Acked-by:
Alex Deucher <alexander.deucher@amd.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220419110633.166236-1-christian.koenig@amd.com
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Bjorn Andersson authored
Commit '80253168 ("drm: of: Lookup if child node has panel or bridge")' attempted to simplify the case of expressing a simple panel under a DSI controller, by assuming that the first non-graph child node was a panel or bridge. Unfortunately for non-trivial cases the first child node might not be a panel or bridge. Examples of this can be a aux-bus in the case of DisplayPort, or an opp-table represented before the panel node. In these cases the reverted commit prevents the caller from ever finding a reference to the panel. This reverts commit '80253168 ("drm: of: Lookup if child node has panel or bridge")', in favor of using an explicit graph reference to the panel in the trivial case as well. Signed-off-by:
Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by:
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Bjorn Andersson authored
Commit '80253168 ("drm: of: Lookup if child node has panel or bridge")' introduced the ability to describe a panel under a display controller without having to use a graph to connect the controller to its single child panel (or bridge). The implementation of this would find the first non-graph node and attempt to acquire the related panel or bridge. This prevents cases where any other child node, such as a aux bus for a DisplayPort controller, or an opp-table to find the referenced panel. Commit '67bae5f2 ("drm: of: Properly try all possible cases for bridge/panel detection")' attempted to solve this problem by not bypassing the graph reference lookup before attempting to find the panel or bridge. While this does solve the case where a proper graph reference is present, it does not allow the caller to distinguish between a yet-to-be-probed panel or bridge and the absence of a reference to a panel. One such case is a DisplayPort controller that on some boards have an explicitly described reference to a panel, but on others have a discoverable DisplayPort display attached (which doesn't need to be expressed in DeviceTree). This reverts commit '67bae5f2 ("drm: of: Properly try all possible cases for bridge/panel detection")', as a step towards reverting commit '80253168 ("drm: of: Lookup if child node has panel or bridge")'. Signed-off-by:
Paul Kocialkowski <paul.kocialkowski@bootlin.com> Signed-off-by:
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Miaoqian Lin authored
If the device is already in a runtime PM enabled state pm_runtime_get_sync() will return 1. Also, we need to call pm_runtime_put_noidle() when pm_runtime_get_sync() fails, so use pm_runtime_resume_and_get() instead. this function will handle this. Fixes: 4078f575 ("drm/vc4: Add DSI driver") Signed-off-by:
Miaoqian Lin <linmq006@gmail.com> Signed-off-by:
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Zack Rusin authored
v2: Add the last part of the ref count fix which was spotted by Philipp Sieweck where the ref count of cpu writers is off due to ERESTARTSYS or EBUSY during bo waits. The initial GEM port broke refcounting on shareable (prime) surfaces and memory evictions. The prime surfaces broke because the parent surfaces weren't increasing the ref count on GEM surfaces, which meant that the memory backing textures could have been deleted while the texture was still accessible. The evictions broke due to a typo, the code was supposed to exit if the passed buffers were not vmw_buffer_object not if they were. They're tied because the evictions depend on having memory to actually evict. This fixes crashes with XA state tracker which is used for xrender acceleration on xf86-video-vmware, apps/tests which use a lot of memory (a good test being the piglit's streaming-texture-leak) and desktops. Signed-off-by:
Zack Rusin <zackr@vmware.com> Fixes: 8afa13a0 ("drm/vmwgfx: Implement DRIVER_GEM") Reported-by:
Philipp Sieweck <psi@informatik.uni-kiel.de> Cc: <stable@vger.kernel.org> # v5.17+ Reviewed-by:
Maaz Mombasawala <mombasawalam@vmware.com> Reviewed-by:
Martin Krastev <krastevm@vmware.com> Link: https://patchwork.freedesktop.org/patch/msgid/20220420040328.1007409-1-zack@kde.org
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- 20 Apr, 2022 3 commits
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Zheng Bin authored
If CONFIG_DRM_VC4=y, CONFIG_RASPBERRYPI_FIRMWARE=m, CONFIG_COMPILE_TEST=n, bulding fails: drivers/gpu/drm/vc4/vc4_drv.o: In function `vc4_drm_bind': vc4_drv.c:(.text+0x320): undefined reference to `rpi_firmware_get' vc4_drv.c:(.text+0x320): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `rpi_firmware_get' vc4_drv.c:(.text+0x34c): undefined reference to `rpi_firmware_property' vc4_drv.c:(.text+0x34c): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `rpi_firmware_property' vc4_drv.c:(.text+0x354): undefined reference to `rpi_firmware_put' vc4_drv.c:(.text+0x354): relocation truncated to fit: R_AARCH64_CALL26 against undefined symbol `rpi_firmware_put' Make DRM_VC4 depends on RASPBERRYPI_FIRMWARE || (COMPILE_TEST && !RASPBERRYPI_FIRMWARE) to fix this. Fixes: c406ad5e ("drm/vc4: Notify the firmware when DRM is in charge") Reported-by:
Hulk Robot <hulkci@huawei.com> Signed-off-by:
Zheng Bin <zhengbin13@huawei.com> Signed-off-by:
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Dave Stevenson authored
The panel has a prepare call which is before video starts, and an enable call which is after. The Toshiba bridge should be configured before video, so move the relevant power and initialisation calls to prepare. Fixes: 2f733d61 ("drm/panel: Add support for the Raspberry Pi 7" Touchscreen.") Signed-off-by:
Dave Stevenson <dave.stevenson@raspberrypi.com> Signed-off-by:
Stefan Wahren <stefan.wahren@i2se.com> Signed-off-by:
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Dave Stevenson authored
If a call to rpi_touchscreen_i2c_write from rpi_touchscreen_probe fails before mipi_dsi_device_register_full is called, then in trying to log the error message if uses ts->dsi->dev when it is still NULL. Use ts->i2c->dev instead, which is initialised earlier in probe. Fixes: 2f733d61 ("drm/panel: Add support for the Raspberry Pi 7" Touchscreen.") Signed-off-by:
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- 13 Apr, 2022 2 commits
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Karol Herbst authored
commit 7938f421 ("dma-buf-map: Rename to iosys-map") already renamed this file, but it got brought back by a merge. Delete it for real this time. Fixes: 30424eba ("Merge tag 'drm-intel-gt-next-2022-02-17' of git://anongit.freedesktop.org/drm/drm-intel into drm-intel-next") Cc: Rodrigo Vivi <rodrigo.vivi@intel.com> Cc: Lucas De Marchi <lucas.demarchi@intel.com> Cc: dri-devel@lists.freedesktop.org Signed-off-by:
Karol Herbst <kherbst@redhat.com> Reviewed-by:
Michel Dänzer <mdaenzer@redhat.com> Reviewed-by:
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Christian König authored
Shared is the opposite of write/exclusive. Signed-off-by:
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- 07 Apr, 2022 1 commit
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Marek Vasut authored
Make the width-mm/height-mm panel properties mandatory to correctly report the panel dimensions to the OS. Fixes: 2f3468b8 ("dt-bindings: display: add bindings for MIPI DBI compatible SPI panels") Signed-off-by:
Marek Vasut <marex@denx.de> Cc: Christoph Niedermaier <cniedermaier@dh-electronics.com> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Dmitry Osipenko <digetx@gmail.com> Cc: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Cc: Noralf Trønnes <noralf@tronnes.org> Cc: Rob Herring <robh+dt@kernel.org> Cc: Robert Foss <robert.foss@linaro.org> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Thomas Zimmermann <tzimmermann@suse.de> Cc: devicetree@vger.kernel.org To: dri-devel@lists.freedesktop.org Acked-by:
Noralf Trønnes <noralf@tronnes.org> Reviewed-by:
Laurent Pinchart <laurent.pinchart@ideasonboard.com> Acked-by:
Rob Herring <robh@kernel.org> Link: https://patchwork.freedesktop.org/patch/msgid/20220404192105.12547-1-marex@denx.de
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- 06 Apr, 2022 1 commit
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Thomas Zimmermann authored
OF framebuffers do not have an underlying device in the Linux device hierarchy. Do a regular unregister call instead of hot unplugging such a non-existing device. Fixes a NULL dereference. An example error message on ppc64le is shown below. BUG: Kernel NULL pointer dereference on read at 0x00000060 Faulting instruction address: 0xc00000000080dfa4 Oops: Kernel access of bad area, sig: 11 [#1] LE PAGE_SIZE=64K MMU=Hash SMP NR_CPUS=2048 NUMA pSeries [...] CPU: 2 PID: 139 Comm: systemd-udevd Not tainted 5.17.0-ae085d7f #1 NIP: c00000000080dfa4 LR: c00000000080df9c CTR: c000000000797430 REGS: c000000004132fe0 TRAP: 0300 Not tainted (5.17.0-ae085d7f) MSR: 8000000002009033 <SF,VEC,EE,ME,IR,DR,RI,LE> CR: 28228282 XER: 20000000 CFAR: c00000000000c80c DAR: 0000000000000060 DSISR: 40000000 IRQMASK: 0 GPR00: c00000000080df9c c000000004133280 c00000000169d200 0000000000000029 GPR04: 00000000ffffefff c000000004132f90 c000000004132f88 0000000000000000 GPR08: c0000000015658f8 c0000000015cd200 c0000000014f57d0 0000000048228283 GPR12: 0000000000000000 c00000003fffe300 0000000020000000 0000000000000000 GPR16: 0000000000000000 0000000113fc4a40 0000000000000005 0000000113fcfb80 GPR20: 000001000f7283b0 0000000000000000 c000000000e4a588 c000000000e4a5b0 GPR24: 0000000000000001 00000000000a0000 c008000000db0168 c0000000021f6ec0 GPR28: c0000000016d65a8 c000000004b36460 0000000000000000 c0000000016d64b0 NIP [c00000000080dfa4] do_remove_conflicting_framebuffers+0x184/0x1d0 [c000000004133280] [c00000000080df9c] do_remove_conflicting_framebuffers+0x17c/0x1d0 (unreliable) [c000000004133350] [c00000000080e4d0] remove_conflicting_framebuffers+0x60/0x150 [c0000000041333a0] [c00000000080e6f4] remove_conflicting_pci_framebuffers+0x134/0x1b0 [c000000004133450] [c008000000e70438] drm_aperture_remove_conflicting_pci_framebuffers+0x90/0x100 [drm] [c000000004133490] [c008000000da0ce4] bochs_pci_probe+0x6c/0xa64 [bochs] [...] [c000000004133db0] [c00000000002aaa0] system_call_exception+0x170/0x2d0 [c000000004133e10] [c00000000000c3cc] system_call_common+0xec/0x250 The bug [1] was introduced by commit 27599aac ("fbdev: Hot-unplug firmware fb devices on forced removal"). Most firmware framebuffers have an underlying platform device, which can be hot-unplugged before loading the native graphics driver. OF framebuffers do not (yet) have that device. Fix the code by unregistering the framebuffer as before without a hot unplug. Tested with 5.17 on qemu ppc64le emulation. Signed-off-by:
Sudip Mukherjee <sudipm.mukherjee@gmail.com> Reviewed-by:
Sudip Mukherjee <sudip.mukherjee@codethink.co.uk> Cc: Zack Rusin <zackr@vmware.com> Cc: Javier Martinez Canillas <javierm@redhat.com> Cc: Hans de Goede <hdegoede@redhat.com> Cc: stable@vger.kernel.org # v5.11+ Cc: Helge Deller <deller@gmx.de> Cc: Daniel Vetter <daniel.vetter@ffwll.ch> Cc: Sam Ravnborg <sam@ravnborg.org> Cc: Zheyu Ma <zheyuma97@gmail.com> Cc: Xiyu Yang <xiyuyang19@fudan.edu.cn> Cc: Zhen Lei <thunder.leizhen@huawei.com> Cc: Matthew Wilcox <willy@infradead.org> Cc: Alex Deucher <alexander.deucher@amd.com> Cc: Tetsuo Handa <penguin-kernel@i-love.sakura.ne.jp> Cc: Guenter Roeck <linux@roeck-us.net> Cc: linux-fbdev@vger.kernel.org Cc: dri-devel@lists.freedesktop.org Link: https://lore.kernel.org/all/YkHXO6LGHAN0p1pq@debian/ # [1] Link: https://patchwork.freedesktop.org/patch/msgid/20220404194402.29974-1-tzimmermann@suse.de
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- 05 Apr, 2022 3 commits
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Maxime Ripard authored
There were a few patches left in drm-misc-next-fixes, let's bring them into drm-misc-fixes. Signed-off-by: -
Maxime Ripard authored
Let's start the 5.18 fixes cycle. Signed-off-by: -
Maxime Ripard authored
MIPI-DSI devices, if they are controlled through the bus itself, have to be described as a child node of the controller they are attached to. Thus, there's no requirement on the controller having an OF-Graph output port to model the data stream: it's assumed that it would go from the parent to the child. However, some bridges controlled through the DSI bus still require an input OF-Graph port, thus requiring a controller with an OF-Graph output port. This prevents those bridges from being used with the controllers that do not have one without any particular reason to. Let's drop that requirement. Signed-off-by:
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- 04 Apr, 2022 1 commit
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Karol Herbst authored
Fixes a crash booting on those platforms with nouveau. Fixes: 4cdd2450 ("drm/nouveau/pmu/gm200-: use alternate falcon reset sequence") Cc: Ben Skeggs <bskeggs@redhat.com> Cc: Karol Herbst <kherbst@redhat.com> Cc: dri-devel@lists.freedesktop.org Cc: nouveau@lists.freedesktop.org Cc: <stable@vger.kernel.org> # v5.17+ Signed-off-by:
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- 03 Apr, 2022 8 commits
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Linus Torvalds authored
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git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-traceLinus Torvalds authored
Pull more tracing updates from Steven Rostedt: - Rename the staging files to give them some meaning. Just stage1,stag2,etc, does not show what they are for - Check for NULL from allocation in bootconfig - Hold event mutex for dyn_event call in user events - Mark user events to broken (to work on the API) - Remove eBPF updates from user events - Remove user events from uapi header to keep it from being installed. - Move ftrace_graph_is_dead() into inline as it is called from hot paths and also convert it into a static branch. * tag 'trace-v5.18-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace: tracing: Move user_events.h temporarily out of include/uapi ftrace: Make ftrace_graph_is_dead() a static branch tracing: Set user_events to BROKEN tracing/user_events: Remove eBPF interfaces tracing/user_events: Hold event_mutex during dyn_event_add proc: bootconfig: Add null pointer check tracing: Rename the staging files for trace_events
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git://git.kernel.org/pub/scm/linux/kernel/git/clk/linuxLinus Torvalds authored
Pull clk fix from Stephen Boyd: "A single revert to fix a boot regression seen when clk_put() started dropping rate range requests. It's best to keep various systems booting so we'll kick this out and try again next time" * tag 'clk-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/clk/linux: Revert "clk: Drop the rate range on clk_put()"
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Thomas Gleixner: "A set of x86 fixes and updates: - Make the prctl() for enabling dynamic XSTATE components correct so it adds the newly requested feature to the permission bitmap instead of overwriting it. Add a selftest which validates that. - Unroll string MMIO for encrypted SEV guests as the hypervisor cannot emulate it. - Handle supervisor states correctly in the FPU/XSTATE code so it takes the feature set of the fpstate buffer into account. The feature sets can differ between host and guest buffers. Guest buffers do not contain supervisor states. So far this was not an issue, but with enabling PASID it needs to be handled in the buffer offset calculation and in the permission bitmaps. - Avoid a gazillion of repeated CPUID invocations in by caching the values early in the FPU/XSTATE code. - Enable CONFIG_WERROR in x86 defconfig. - Make the X86 defconfigs more useful by adapting them to Y2022 reality" * tag 'x86-urgent-2022-04-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/fpu/xstate: Consolidate size calculations x86/fpu/xstate: Handle supervisor states in XSTATE permissions x86/fpu/xsave: Handle compacted offsets correctly with supervisor states x86/fpu: Cache xfeature flags from CPUID x86/fpu/xsave: Initialize offset/size cache early x86/fpu: Remove unused supervisor only offsets x86/fpu: Remove redundant XCOMP_BV initialization x86/sev: Unroll string mmio with CC_ATTR_GUEST_UNROLL_STRING_IO x86/config: Make the x86 defconfigs a bit more usable x86/defconfig: Enable WERROR selftests/x86/amx: Update the ARCH_REQ_XCOMP_PERM test x86/fpu/xstate: Fix the ARCH_REQ_XCOMP_PERM implementation -
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull RT signal fix from Thomas Gleixner: "Revert the RT related signal changes. They need to be reworked and generalized" * tag 'core-urgent-2022-04-03' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: Revert "signal, x86: Delay calling signals in atomic on RT enabled kernels"
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git://git.infradead.org/users/hch/dma-mappingLinus Torvalds authored
Pull more dma-mapping updates from Christoph Hellwig: - fix a regression in dma remap handling vs AMD memory encryption (me) - finally kill off the legacy PCI DMA API (Christophe JAILLET) * tag 'dma-mapping-5.18-1' of git://git.infradead.org/users/hch/dma-mapping: dma-mapping: move pgprot_decrypted out of dma_pgprot PCI/doc: cleanup references to the legacy PCI DMA API PCI: Remove the deprecated "pci-dma-compat.h" API
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git://git.armlinux.org.uk/~rmk/linux-armLinus Torvalds authored
Pull ARM fixes from Russell King: - avoid unnecessary rebuilds for library objects - fix return value of __setup handlers - fix invalid input check for "crashkernel=" kernel option - silence KASAN warnings in unwind_frame * tag 'for-linus' of git://git.armlinux.org.uk/~rmk/linux-arm: ARM: 9191/1: arm/stacktrace, kasan: Silence KASAN warnings in unwind_frame() ARM: 9190/1: kdump: add invalid input check for 'crashkernel=0' ARM: 9187/1: JIVE: fix return value of __setup handler ARM: 9189/1: decompressor: fix unneeded rebuilds of library objects
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Stephen Boyd authored
This reverts commit 7dabfa2b. There are multiple reports that this breaks boot on various systems. The common theme is that orphan clks are having rates set on them when that isn't expected. Let's revert it out for now so that -rc1 boots. Reported-by:
Marek Szyprowski <m.szyprowski@samsung.com> Reported-by:
Tony Lindgren <tony@atomide.com> Reported-by:
Alexander Stein <alexander.stein@ew.tq-group.com> Reported-by:
Naresh Kamboju <naresh.kamboju@linaro.org> Link: https://lore.kernel.org/r/366a0232-bb4a-c357-6aa8-636e398e05eb@samsung.com Cc: Maxime Ripard <maxime@cerno.tech> Signed-off-by:
Stephen Boyd <sboyd@kernel.org> Link: https://lore.kernel.org/r/20220403022818.39572-1-sboyd@kernel.org
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- 02 Apr, 2022 5 commits
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Linus Torvalds authored
Merge tag 'perf-tools-for-v5.18-2022-04-02' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux Pull more perf tools updates from Arnaldo Carvalho de Melo: - Avoid SEGV if core.cpus isn't set in 'perf stat'. - Stop depending on .git files for building PERF-VERSION-FILE, used in 'perf --version', fixing some perf tools build scenarios. - Convert tracepoint.py example to python3. - Update UAPI header copies from the kernel sources: socket, mman-common, msr-index, KVM, i915 and cpufeatures. - Update copy of libbpf's hashmap.c. - Directly return instead of using local ret variable in evlist__create_syswide_maps(), found by coccinelle. * tag 'perf-tools-for-v5.18-2022-04-02' of git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux: perf python: Convert tracepoint.py example to python3 perf evlist: Directly return instead of using local ret variable perf cpumap: More cpu map reuse by merge. perf cpumap: Add is_subset function perf evlist: Rename cpus to user_requested_cpus perf tools: Stop depending on .git files for building PERF-VERSION-FILE tools headers cpufeatures: Sync with the kernel sources tools headers UAPI: Sync drm/i915_drm.h with the kernel sources tools headers UAPI: Sync linux/kvm.h with the kernel sources tools kvm headers arm64: Update KVM headers from the kernel sources tools arch x86: Sync the msr-index.h copy with the kernel sources tools headers UAPI: Sync asm-generic/mman-common.h with the kernel perf beauty: Update copy of linux/socket.h with the kernel sources perf tools: Update copy of libbpf's hashmap.c perf stat: Avoid SEGV if core.cpus isn't set
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Linus Torvalds authored
Merge tag 'kbuild-fixes-v5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild Pull Kbuild fixes from Masahiro Yamada: - Fix empty $(PYTHON) expansion. - Fix UML, which got broken by the attempt to suppress Clang warnings. - Fix warning message in modpost. * tag 'kbuild-fixes-v5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/masahiroy/linux-kbuild: modpost: restore the warning message for missing symbol versions Revert "um: clang: Strip out -mno-global-merge from USER_CFLAGS" kbuild: Remove '-mno-global-merge' kbuild: fix empty ${PYTHON} in scripts/link-vmlinux.sh kconfig: remove stale comment about removed kconfig_print_symbol()
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git://git.kernel.org/pub/scm/linux/kernel/git/mips/linuxLinus Torvalds authored
Pull MIPS fixes from Thomas Bogendoerfer: - build fix for gpio - fix crc32 build problems - check for failed memory allocations * tag 'mips_5.18_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux: MIPS: crypto: Fix CRC32 code MIPS: rb532: move GPIOD definition into C-files MIPS: lantiq: check the return value of kzalloc() mips: sgi-ip22: add a check for the return of kzalloc()
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git://git.kernel.org/pub/scm/virt/kvm/kvmLinus Torvalds authored
Pull kvm fixes from Paolo Bonzini: - Only do MSR filtering for MSRs accessed by rdmsr/wrmsr - Documentation improvements - Prevent module exit until all VMs are freed - PMU Virtualization fixes - Fix for kvm_irq_delivery_to_apic_fast() NULL-pointer dereferences - Other miscellaneous bugfixes * tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (42 commits) KVM: x86: fix sending PV IPI KVM: x86/mmu: do compare-and-exchange of gPTE via the user address KVM: x86: Remove redundant vm_entry_controls_clearbit() call KVM: x86: cleanup enter_rmode() KVM: x86: SVM: fix tsc scaling when the host doesn't support it kvm: x86: SVM: remove unused defines KVM: x86: SVM: move tsc ratio definitions to svm.h KVM: x86: SVM: fix avic spec based definitions again KVM: MIPS: remove reference to trap&emulate virtualization KVM: x86: document limitations of MSR filtering KVM: x86: Only do MSR filtering when access MSR by rdmsr/wrmsr KVM: x86/emulator: Emulate RDPID only if it is enabled in guest KVM: x86/pmu: Fix and isolate TSX-specific performance event logic KVM: x86: mmu: trace kvm_mmu_set_spte after the new SPTE was set KVM: x86/svm: Clear reserved bits written to PerfEvtSeln MSRs KVM: x86: Trace all APICv inhibit changes and capture overall status KVM: x86: Add wrappers for setting/clearing APICv inhibits KVM: x86: Make APICv inhibit reasons an enum and cleanup naming KVM: X86: Handle implicit supervisor access with SMAP KVM: X86: Rename variable smap to not_smap in permission_fault() ...
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Masahiro Yamada authored
This log message was accidentally chopped off. I was wondering why this happened, but checking the ML log, Mark precisely followed my suggestion [1]. I just used "..." because I was too lazy to type the sentence fully. Sorry for the confusion. [1]: https://lore.kernel.org/all/CAK7LNAR6bXXk9-ZzZYpTqzFqdYbQsZHmiWspu27rtsFxvfRuVA@mail.gmail.com/ Fixes: 4a679593 ("kbuild: modpost: Explicitly warn about unprototyped symbols") Signed-off-by:
Masahiro Yamada <masahiroy@kernel.org> Acked-by:
Mark Brown <broonie@kernel.org> Reviewed-by:
Nick Desaulniers <ndesaulniers@google.com>
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