From: Srinivasan Shanmugam <srinivasan.shanmugam@xxxxxxx>
This commit applies isolation enforcement to the GFX and Compute rings
in the gfx_v9_0 module.
The commit sets `amdgpu_gfx_enforce_isolation_ring_begin_use` and
`amdgpu_gfx_enforce_isolation_ring_end_use` as the functions to be
called when a ring begins and ends its use, respectively.
`amdgpu_gfx_enforce_isolation_ring_begin_use` is called when a ring
begins its use. This function cancels any scheduled
`enforce_isolation_work` and, if necessary, signals the Kernel Fusion
Driver (KFD) to stop the runqueue.
`amdgpu_gfx_enforce_isolation_ring_end_use` is called when a ring ends
its use. This function schedules `enforce_isolation_work` to be run
after a delay.
These functions are part of the Enforce Isolation Handler, which
enforces shader isolation on AMD GPUs to prevent data leakage between
different processes.
Cc: Christian König <christian.koenig@xxxxxxx>
Cc: Alex Deucher <alexander.deucher@xxxxxxx>
Signed-off-by: Srinivasan Shanmugam <srinivasan.shanmugam@xxxxxxx>
Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx>
Suggested-by: Christian König <christian.koenig@xxxxxxx>
---
drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
index 3045b8b0796d..21089aadbb7b 100644
--- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
+++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_0.c
@@ -7470,6 +7470,8 @@ static const struct amdgpu_ring_funcs gfx_v9_0_ring_funcs_gfx = {
.emit_mem_sync = gfx_v9_0_emit_mem_sync,
.reset = gfx_v9_0_reset_kgq,
.emit_cleaner_shader = gfx_v9_0_ring_emit_cleaner_shader,
+ .begin_use = amdgpu_gfx_enforce_isolation_ring_begin_use,
+ .end_use = amdgpu_gfx_enforce_isolation_ring_end_use,
};
static const struct amdgpu_ring_funcs gfx_v9_0_sw_ring_funcs_gfx = {
@@ -7528,6 +7530,8 @@ static const struct amdgpu_ring_funcs gfx_v9_0_sw_ring_funcs_gfx = {
.patch_de = gfx_v9_0_ring_patch_de_meta,
.patch_ce = gfx_v9_0_ring_patch_ce_meta,
.emit_cleaner_shader = gfx_v9_0_ring_emit_cleaner_shader,
+ .begin_use = amdgpu_gfx_enforce_isolation_ring_begin_use,
+ .end_use = amdgpu_gfx_enforce_isolation_ring_end_use,
};
static const struct amdgpu_ring_funcs gfx_v9_0_ring_funcs_compute = {
@@ -7569,6 +7573,8 @@ static const struct amdgpu_ring_funcs gfx_v9_0_ring_funcs_compute = {
.emit_wave_limit = gfx_v9_0_emit_wave_limit,
.reset = gfx_v9_0_reset_kcq,
.emit_cleaner_shader = gfx_v9_0_ring_emit_cleaner_shader,
+ .begin_use = amdgpu_gfx_enforce_isolation_ring_begin_use,
+ .end_use = amdgpu_gfx_enforce_isolation_ring_end_use,
};
static const struct amdgpu_ring_funcs gfx_v9_0_ring_funcs_kiq = {
--
2.46.0
