x86/CPU: Fix FPDSS on Zen1 - kernel - Hosts the 0x221E linux distro kernel.

Hosts the 0x221E linux distro kernel.

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author	Borislav Petkov (AMD) <bp@alien8.de>	2026-04-07 11:40:03 +0200
committer	Greg Kroah-Hartman <gregkh@linuxfoundation.org>	2026-04-22 13:32:14 +0200
commit	546785c719418c6166834a47e372a88f5f7ae893 (patch)
tree	f0314fb95caa6ed1317f6c40b6ea3a751187456b /tools/perf/scripts/python/flamegraph.py
parent	aba4712e8f0381cd5d196534ce2ad082626a5ab6 (diff)
download	kernel-546785c719418c6166834a47e372a88f5f7ae893.tar.gz

x86/CPU: Fix FPDSS on Zen1

commit e55d98e7756135f32150b9b8f75d580d0d4b2dd3 upstream. Zen1's hardware divider can leave, under certain circumstances, partial results from previous operations. Those results can be leaked by another, attacker thread. Fix that with a chicken bit. Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

Diffstat (limited to 'tools/perf/scripts/python/flamegraph.py')

0 files changed, 0 insertions, 0 deletions

'RKISP1_DIR_*' are flags that indicate on which pads of the isp subdevice the media bus code is supported. So the prefix RKISP1_ISP_SD_ is better. Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com> Acked-by: Helen Koike <helen.koike@collabora.com> Reviewed-by: Tomasz Figa <tfiga@chromium.org> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> 2020-07-04media: staging: rkisp1: remove macro RKISP1_DIR_SINK_SRCDafna Hirschfeld The macro RKISP1_DIR_SINK_SRC is a mask of two flags. The macro hides the fact that it's a mask and the code is actually more clear if we replace it the with bitwise-or explicitly. Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com> Acked-by: Helen Koike <helen.koike@collabora.com> Reviewed-by: Tomasz Figa <tfiga@chromium.org> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> 2020-06-23media: staging: rkisp1: fix dev param for dev_* debugsDafna Hirschfeld In some debug prints a wrong 'dev' argument is used for the dev_(dbg/err/warn), this cause a prefix "(NULL device *)" to the prints. In some prints the 'dev' of the sensor subdevice is used which is also wrong. Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> [hverkuil-cisco@xs4all.nl: s/in subdev/in sensor subdev/ as per Laurent's comment] Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> 2020-04-22media: rkisp1: fix missing mbus.type -> mbus_type conversionHans Verkuil There was one missing sensor->mbus.type to sensor->mbus_type conversion which broke the build. I suspect this was due to a merge conflict that was incorrectly resolved. Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> 2020-04-21media: staging: rkisp1: remove mbus field from rkisp1_sensor_asyncDafna Hirschfeld 'struct v4l2_mbus_config' is a legacy struct that should not be used in new drivers. So replace it with the fields: enum v4l2_mbus_type mbus_type; unsigned int mbus_flags; Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com> Acked-by: Helen Koike <helen.koike@collabora.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> 2020-04-21media: staging: rkisp1: change fields names from fmt_type to pixel_encDafna Hirschfeld The fields 'fmt_type' in the structs 'rkisp1_rsz_config', 'rkisp1_isp_mbus_info' are of type 'v4l2_pixel_encoding' so it is nicer to change their name to 'pixel_enc'. Also change the define 'RKISP1_DEF_FMT_TYPE' to 'RKISP1_DEF_PIXEL_ENC' Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> 2020-04-21media: staging: rkisp1: replace rkisp1_fmt_pix_type with v4l2_pixel_encodingDafna Hirschfeld The enum rkisp1_fmt_pix_type that holds the pixel format which is one of RGB, YUV, BAYER, can be replace by the v4l2 enum v4l2_pixel_encoding. Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com> Acked-by: Helen Koike <helen.koike@collabora.com> Reviewed-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> 2020-02-24media: staging: rkisp1: add serialization to the isp subdev opsDafna Hirschfeld For subdevices drivers, the drivers themself are responsible for serializing their operations. This patch adds serialization to the isp subdevice. Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com> Acked-by: Helen Koike <helen.koike@collabora.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> 2020-02-24media: staging: rkisp1: isp: check for dphy bus before initializations in ↵Dafna Hirschfeld s_stream In rkisp1_isp_s_stream it is better to return error in case the bus type is not dphy before initializing the registers. Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com> Acked-by: Helen Koike <helen.koike@collabora.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> 2020-02-24media: staging: rkisp1: change function to return void instead of intDafna Hirschfeld There are functions that return int but actually return always 0. Change them to return void and then there is no need to check for error return value. Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com> Acked-by: Helen Koike <helen.koike@collabora.com> Acked-by: Sakari Ailus <sakari.ailus@linux.intel.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> 2020-02-24media: staging: rkisp1: isp: do not set invalid mbus code for padHelen Koike When setting source pad, check if the given mbus code is indeed valid for source pad, if not, then set the default code. Same for sink pad. Fixes: d65dd85281fb ("media: staging: rkisp1: add Rockchip ISP1 base driver") Reported-by: Wojciech Zabolotny <wzab01@gmail.com> Signed-off-by: Helen Koike <helen.koike@collabora.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> 2020-02-24media: staging: rkisp1: improve inner documentation in rkisp1-isp.cDafna Hirschfeld Improve the documentation in the beginning of the file rkisp1-isp1.c Signed-off-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com> Acked-by: Helen Koike <helen.koike@collabora.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> 2020-01-09media: staging: rkisp1: add output device for parametersJacob Chen Add the output video driver that accept parameters from userspace. Signed-off-by: Jacob Chen <jacob2.chen@rock-chips.com> Signed-off-by: Shunqian Zheng <zhengsq@rock-chips.com> Signed-off-by: Yichong Zhong <zyc@rock-chips.com> Signed-off-by: Jacob Chen <cc@rock-chips.com> Signed-off-by: Eddie Cai <eddie.cai.linux@gmail.com> Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com> Signed-off-by: Allon Huang <allon.huang@rock-chips.com> Signed-off-by: Tomasz Figa <tfiga@chromium.org> Signed-off-by: Helen Koike <helen.koike@collabora.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> 2020-01-09media: staging: rkisp1: add capture device for statisticsJacob Chen Add the capture video driver for rockchip isp1 statistics block. Signed-off-by: Jacob Chen <jacob2.chen@rock-chips.com> Signed-off-by: Shunqian Zheng <zhengsq@rock-chips.com> Signed-off-by: Yichong Zhong <zyc@rock-chips.com> Signed-off-by: Jacob Chen <cc@rock-chips.com> Signed-off-by: Eddie Cai <eddie.cai.linux@gmail.com> Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com> Signed-off-by: Allon Huang <allon.huang@rock-chips.com> Signed-off-by: Tomasz Figa <tfiga@chromium.org> Signed-off-by: Helen Koike <helen.koike@collabora.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org> 2020-01-09media: staging: rkisp1: add Rockchip ISP1 base driverHelen Koike Add base driver for Rockchip Image Signal Processing v1 Unit, with isp subdevice and sensor biddings. [fixed compilation and run time errors regarding new v4l2 async API] Signed-off-by: Jacob Chen <jacob2.chen@rock-chips.com> Signed-off-by: Shunqian Zheng <zhengsq@rock-chips.com> Signed-off-by: Yichong Zhong <zyc@rock-chips.com> Signed-off-by: Jacob Chen <cc@rock-chips.com> Signed-off-by: Eddie Cai <eddie.cai.linux@gmail.com> Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com> Signed-off-by: Allon Huang <allon.huang@rock-chips.com> Signed-off-by: Tomasz Figa <tfiga@chromium.org> Signed-off-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com> Signed-off-by: Ezequiel Garcia <ezequiel@collabora.com> Signed-off-by: Helen Koike <helen.koike@collabora.com> Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl> Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>