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linux/drivers/accel
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Jacek Lawrynowicz fd7726e759 accel/ivpu: Fix deadlock in context_xa 
ivpu_device->context_xa is locked both in kernel thread and IRQ context.
It requires XA_FLAGS_LOCK_IRQ flag to be passed during initialization
otherwise the lock could be acquired from a thread and interrupted by
an IRQ that locks it for the second time causing the deadlock.

This deadlock was reported by lockdep and observed in internal tests.

Fixes: 35b137630f ("accel/ivpu: Introduce a new DRM driver for Intel VPU")
Cc: <stable@vger.kernel.org> # v6.3+
Signed-off-by: Jacek Lawrynowicz <jacek.lawrynowicz@linux.intel.com>
Reviewed-by: Jeffrey Hugo <quic_jhugo@quicinc.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20240402104929.941186-9-jacek.lawrynowicz@linux.intel.com
History 2024-04-08 10:55:01 +02:00
..
habanalabs accel/habanalabs: modify pci health check 2024-02-26 09:47:32 +02:00
ivpu accel/ivpu: Fix deadlock in context_xa 2024-04-08 10:55:01 +02:00
qaic accel/qaic: Constify aic100_channels 2024-02-23 09:06:50 -07:00
drm_accel.c accel: constify the struct device_type usage 2024-02-26 09:59:18 +02:00
Kconfig accel/qaic: Add qaic driver to the build system 2023-04-06 08:23:03 +02:00
Makefile accel/qaic: Add qaic driver to the build system 2023-04-06 08:23:03 +02:00