From: Zhenyu Wang <zhenyuw@linux.intel.com>
To: intel-gfx@lists.freedesktop.org
Cc: "Xu, Terrence" <terrence.xu@intel.com>,
intel-gvt-dev@lists.freedesktop.org, stable@vger.kernel.org
Subject: [Intel-gfx] [PATCH] drm/i915/gvt: Fix cached atomics setting for Windows VM
Date: Wed, 21 Jul 2021 14:26:07 +0800 [thread overview]
Message-ID: <20210721062607.512307-1-zhenyuw@linux.intel.com> (raw)
We've seen recent regression with host and windows VM running
simultaneously that cause gpu hang or even crash. Finally bisect to
58586680ffad ("drm/i915: Disable atomics in L3 for gen9"), which seems
cached atomics behavior difference caused regression issue.
This trys to add new scratch register handler and add those in mmio
save/restore list for context switch. No gpu hang produced with this one.
Cc: stable@vger.kernel.org # 5.12+
Cc: "Xu, Terrence" <terrence.xu@intel.com>
Fixes: 58586680ffad ("drm/i915: Disable atomics in L3 for gen9")
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
---
drivers/gpu/drm/i915/gvt/handlers.c | 1 +
drivers/gpu/drm/i915/gvt/mmio_context.c | 2 ++
2 files changed, 3 insertions(+)
diff --git a/drivers/gpu/drm/i915/gvt/handlers.c b/drivers/gpu/drm/i915/gvt/handlers.c
index 98eb48c24c46..345b4be5ebad 100644
--- a/drivers/gpu/drm/i915/gvt/handlers.c
+++ b/drivers/gpu/drm/i915/gvt/handlers.c
@@ -3134,6 +3134,7 @@ static int init_bdw_mmio_info(struct intel_gvt *gvt)
MMIO_DFH(_MMIO(0xb100), D_BDW, F_CMD_ACCESS, NULL, NULL);
MMIO_DFH(_MMIO(0xb10c), D_BDW, F_CMD_ACCESS, NULL, NULL);
MMIO_D(_MMIO(0xb110), D_BDW);
+ MMIO_D(GEN9_SCRATCH_LNCF1, D_BDW_PLUS);
MMIO_F(_MMIO(0x24d0), 48, F_CMD_ACCESS | F_CMD_WRITE_PATCH, 0, 0,
D_BDW_PLUS, NULL, force_nonpriv_write);
diff --git a/drivers/gpu/drm/i915/gvt/mmio_context.c b/drivers/gpu/drm/i915/gvt/mmio_context.c
index b8ac80765461..f776c470914d 100644
--- a/drivers/gpu/drm/i915/gvt/mmio_context.c
+++ b/drivers/gpu/drm/i915/gvt/mmio_context.c
@@ -105,6 +105,8 @@ static struct engine_mmio gen9_engine_mmio_list[] __cacheline_aligned = {
{RCS0, COMMON_SLICE_CHICKEN2, 0xffff, true}, /* 0x7014 */
{RCS0, GEN9_CS_DEBUG_MODE1, 0xffff, false}, /* 0x20ec */
{RCS0, GEN8_L3SQCREG4, 0, false}, /* 0xb118 */
+ {RCS0, GEN9_SCRATCH1, 0, false}, /* 0xb11c */
+ {RCS0, GEN9_SCRATCH_LNCF1, 0, false}, /* 0xb008 */
{RCS0, GEN7_HALF_SLICE_CHICKEN1, 0xffff, true}, /* 0xe100 */
{RCS0, HALF_SLICE_CHICKEN2, 0xffff, true}, /* 0xe180 */
{RCS0, HALF_SLICE_CHICKEN3, 0xffff, true}, /* 0xe184 */
--
2.32.0.rc2
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next reply other threads:[~2021-07-21 6:21 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-21 6:26 Zhenyu Wang [this message]
2021-07-21 7:57 ` [Intel-gfx] ✗ Fi.CI.CHECKPATCH: warning for drm/i915/gvt: Fix cached atomics setting for Windows VM Patchwork
2021-07-21 8:01 ` [Intel-gfx] ✗ Fi.CI.DOCS: " Patchwork
2021-07-21 8:25 ` [Intel-gfx] ✓ Fi.CI.BAT: success " Patchwork
2021-07-21 9:08 ` [Intel-gfx] [PATCH] " Daniel Vetter
2021-07-21 19:41 ` Jason Ekstrand
2021-07-21 11:13 ` [Intel-gfx] ✓ Fi.CI.IGT: success for " Patchwork
2021-08-06 4:40 ` [Intel-gfx] [PATCH v2] " Zhenyu Wang
2021-08-06 5:50 ` Colin Xu
2021-08-06 5:30 ` [Intel-gfx] ✓ Fi.CI.BAT: success for drm/i915/gvt: Fix cached atomics setting for Windows VM (rev2) Patchwork
2021-08-06 12:35 ` [Intel-gfx] ✗ Fi.CI.IGT: failure " Patchwork
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