what: some os preemption path is messed up with world switch preemption fix: cleanup those logics so os preemption not mixed with world switch
this patch is a general fix for issues comes from SRIOV MCBP, but there is still UMD side issues not resovlved yet, so this patch cannot fix all world switch bug. Signed-off-by: Monk Liu <[email protected]> --- drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c | 3 ++- drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c | 8 ++++---- 2 files changed, 6 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c index a2ee30b..7854c05 100644 --- a/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c +++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_sdma.c @@ -70,7 +70,8 @@ uint64_t amdgpu_sdma_get_csa_mc_addr(struct amdgpu_ring *ring, uint32_t index = 0; int r; - if (vmid == 0 || !amdgpu_mcbp) + /* don't enable OS preemption on SDMA under SRIOV */ + if (amdgpu_sriov_vf(adev) || vmid == 0 || !amdgpu_mcbp) return 0; r = amdgpu_sdma_get_index_from_ring(ring, &index); diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c index 5e9fb09..7b61583 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c @@ -4413,7 +4413,7 @@ static void gfx_v10_0_ring_emit_ib_gfx(struct amdgpu_ring *ring, control |= ib->length_dw | (vmid << 24); - if (amdgpu_mcbp && (ib->flags & AMDGPU_IB_FLAG_PREEMPT)) { + if ((amdgpu_sriov_vf(ring->adev) || amdgpu_mcbp) && (ib->flags & AMDGPU_IB_FLAG_PREEMPT)) { control |= INDIRECT_BUFFER_PRE_ENB(1); if (flags & AMDGPU_IB_PREEMPTED) @@ -4421,7 +4421,7 @@ static void gfx_v10_0_ring_emit_ib_gfx(struct amdgpu_ring *ring, if (!(ib->flags & AMDGPU_IB_FLAG_CE)) gfx_v10_0_ring_emit_de_meta(ring, - flags & AMDGPU_IB_PREEMPTED ? true : false); + (!amdgpu_sriov_vf(ring->adev) && flags & AMDGPU_IB_PREEMPTED) ? true : false); } amdgpu_ring_write(ring, header); @@ -4569,9 +4569,9 @@ static void gfx_v10_0_ring_emit_cntxcntl(struct amdgpu_ring *ring, { uint32_t dw2 = 0; - if (amdgpu_mcbp) + if (amdgpu_mcbp || amdgpu_sriov_vf(ring->adev)) gfx_v10_0_ring_emit_ce_meta(ring, - flags & AMDGPU_IB_PREEMPTED ? true : false); + (!amdgpu_sriov_vf(ring->adev) && flags & AMDGPU_IB_PREEMPTED) ? true : false); dw2 |= 0x80000000; /* set load_enable otherwise this package is just NOPs */ if (flags & AMDGPU_HAVE_CTX_SWITCH) { -- 2.7.4 _______________________________________________ amd-gfx mailing list [email protected] https://lists.freedesktop.org/mailman/listinfo/amd-gfx
