From: leiyaoyao Date: Mon, 27 Feb 2023 05:24:03 +0000 (+0800) Subject: drm/amdgpu: Stop clearing kiq position during fini X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=db1c1a8f0a2bb69eb9123b2d2a88cc7d3d49b13a;p=linux.git drm/amdgpu: Stop clearing kiq position during fini Do not clear kiq position in RLC_CP_SCHEDULER so that CP could perform IDLE-SAVE after VF fini. Otherwise it could cause GFX hang if another Win guest is rendering. Signed-off-by: leiyaoyao Acked-by: ZhenGuo Yin Signed-off-by: Alex Deucher --- diff --git a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c index 6983acc456b28..073f5f23bc3bb 100644 --- a/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c +++ b/drivers/gpu/drm/amd/amdgpu/gfx_v10_0.c @@ -7285,17 +7285,9 @@ static int gfx_v10_0_hw_fini(void *handle) if (amdgpu_sriov_vf(adev)) { gfx_v10_0_cp_gfx_enable(adev, false); - /* Program KIQ position of RLC_CP_SCHEDULERS during destroy */ - if (adev->ip_versions[GC_HWIP][0] >= IP_VERSION(10, 3, 0)) { - tmp = RREG32_SOC15(GC, 0, mmRLC_CP_SCHEDULERS_Sienna_Cichlid); - tmp &= 0xffffff00; - WREG32_SOC15(GC, 0, mmRLC_CP_SCHEDULERS_Sienna_Cichlid, tmp); - } else { - tmp = RREG32_SOC15(GC, 0, mmRLC_CP_SCHEDULERS); - tmp &= 0xffffff00; - WREG32_SOC15(GC, 0, mmRLC_CP_SCHEDULERS, tmp); - } - + /* Remove the steps of clearing KIQ position. + * It causes GFX hang when another Win guest is rendering. + */ return 0; } gfx_v10_0_cp_enable(adev, false);