accel/ivpu: Add set_pages_array_wc/uc for internal buffers

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commit 1963546390 upstream.

Buffers mapped with pgprot_writecombined() are not correctly
flushed. This triggers issues on VPU access using random
memory content such as MMU translation faults, invalid context
descriptors being fetched and can lead to VPU FW crashes.

Fixes: 647371a660 ("accel/ivpu: Add GEM buffer object management")
Cc: stable@vger.kernel.org # 6.3+
Signed-off-by: Karol Wachowski <karol.wachowski@linux.intel.com>
Reviewed-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Signed-off-by: Stanislaw Gruszka <stanislaw.gruszka@linux.intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20230802063735.3005291-1-stanislaw.gruszka@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Karol Wachowski 2023-08-02 08:37:35 +02:00 • committed by Greg Kroah-Hartman

parent 5828d5f5dc

commit 4747cc4042

1 changed files with 8 additions and 0 deletions

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drivers/accel/ivpu/ivpu_gem.c

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