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drm/amdgpu: use kiq to do invalidate tlb

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To avoid the tlb flush not interrupted by world switch, use kiq and one
command to do tlb invalidate.

v2:
Refine the invalidate lock position.

Signed-off-by: Emily Deng <Emily.Deng@amd.com>
Reviewed-and-Tested-by: Rex Zhu <Rex.Zhu@amd.com>
Reviewed-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Emily Deng
2018-08-17 18:25:36 +08:00
committed by Alex Deucher
parent 39b62541aa
commit 3890d11153
3 changed files with 71 additions and 10 deletions
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3
drivers/gpu/drm/amd/amdgpu/amdgpu_virt.c
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@@ -22,9 +22,6 @@
*/
#include "amdgpu.h"
#define MAX_KIQ_REG_WAIT 5000 /* in usecs, 5ms */
#define MAX_KIQ_REG_BAILOUT_INTERVAL 5 /* in msecs, 5ms */
#define MAX_KIQ_REG_TRY 20
uint64_t amdgpu_csa_vaddr(struct amdgpu_device *adev)
{