From: Srinivasan Shanmugam <[email protected]> This commit applies isolation enforcement to the GFX and Compute rings in the gfx_v9_4_3 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. The commit also includes a check for the type of the ring. If the type of the ring is `AMDGPU_RING_TYPE_COMPUTE`, the `xcp_id` of the `enforce_isolation` structure in the `gfx` structure of the `amdgpu_device` is set to the `xcp_id` of the ring. This ensures that the correct `xcp_id` is used when enforcing isolation on compute rings. The `xcp_id` is an identifier for an XCP partition, and different rings can be associated with different XCP partitions. Cc: Christian König <[email protected]> Cc: Alex Deucher <[email protected]> Signed-off-by: Alex Deucher <[email protected]> Signed-off-by: Srinivasan Shanmugam <[email protected]> --- drivers/gpu/drm/amd/amdgpu/aqua_vanjaram.c | 4 ++++ drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c | 2 ++ 2 files changed, 6 insertions(+) diff --git a/drivers/gpu/drm/amd/amdgpu/aqua_vanjaram.c b/drivers/gpu/drm/amd/amdgpu/aqua_vanjaram.c index 228fd4dd32f1..26e2188101e7 100644 --- a/drivers/gpu/drm/amd/amdgpu/aqua_vanjaram.c +++ b/drivers/gpu/drm/amd/amdgpu/aqua_vanjaram.c @@ -75,6 +75,8 @@ static void aqua_vanjaram_set_xcp_id(struct amdgpu_device *adev, uint32_t inst_mask; ring->xcp_id = AMDGPU_XCP_NO_PARTITION; + if (ring->funcs->type == AMDGPU_RING_TYPE_COMPUTE) + adev->gfx.enforce_isolation[0].xcp_id = ring->xcp_id; if (adev->xcp_mgr->mode == AMDGPU_XCP_MODE_NONE) return; @@ -103,6 +105,8 @@ static void aqua_vanjaram_set_xcp_id(struct amdgpu_device *adev, for (xcp_id = 0; xcp_id < adev->xcp_mgr->num_xcps; xcp_id++) { if (adev->xcp_mgr->xcp[xcp_id].ip[ip_blk].inst_mask & inst_mask) { ring->xcp_id = xcp_id; + if (ring->funcs->type == AMDGPU_RING_TYPE_COMPUTE) + adev->gfx.enforce_isolation[xcp_id].xcp_id = xcp_id; break; } } diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c b/drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c index fa6752585a72..2067f26d3a9d 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v9_4_3.c @@ -4671,6 +4671,8 @@ static const struct amdgpu_ring_funcs gfx_v9_4_3_ring_funcs_compute = { .emit_wave_limit = gfx_v9_4_3_emit_wave_limit, .reset = gfx_v9_4_3_reset_kcq, .emit_cleaner_shader = gfx_v9_4_3_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_4_3_ring_funcs_kiq = { -- 2.46.0
