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drm/amdkfd: clamp queue size to minimum

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[ Upstream commit e90711946b53590371ecce32e8fcc381a99d6333 ]

If queue size is less than minimum, clamp it to minimum to prevent
underflow when writing queue mqd.

Signed-off-by: David Yat Sin <David.YatSin@amd.com>
Reviewed-by: Jay Cornwall <jay.cornwall@amd.com>
Reviewed-by: Harish Kasiviswanathan <Harish.Kasiviswanathan@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
David Yat Sin 2025-02-25 18:08:02 -05:00 • committed by Greg Kroah-Hartman
commit ed42a47bb3
2 changed files with 12 additions and 0 deletions
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2
include/uapi/linux/kfd_ioctl.h
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@ -43,6 +43,8 @@ struct kfd_ioctl_get_version_args {
#define KFD_MAX_QUEUE_PERCENTAGE 100
#define KFD_MAX_QUEUE_PRIORITY 15
#define KFD_MIN_QUEUE_RING_SIZE 1024
struct kfd_ioctl_create_queue_args {
__u64 ring_base_address; /* to KFD */
__u64 write_pointer_address; /* from KFD */