We need to make the BSW workaround actually work. We correctly fixed
the mutex nesting, but forgot to kill the worker.
The worker is killed by clearing async_flags, and just running bind_vma
synchronously. This still needs the stash, because we cannot allocate
and pin with vm->mutex already held.
Changes since v1:
- Fix null pointer dereference when we forget to pass the work stash,
it's still required to prealloc all on affected platforms.
Changes since v2:
- Clear bind_async_flags correctly on ggtt w/a.
Signed-off-by: Maarten Lankhorst <maarten.lankho...@linux.intel.com>
---
drivers/gpu/drm/i915/gt/gen6_ppgtt.c | 4 +++-
drivers/gpu/drm/i915/gt/gen8_ppgtt.c | 4 +++-
drivers/gpu/drm/i915/gt/intel_ggtt.c | 2 --
drivers/gpu/drm/i915/i915_vma.c | 4 ++--
4 files changed, 8 insertions(+), 6 deletions(-)
diff --git a/drivers/gpu/drm/i915/gt/gen6_ppgtt.c
b/drivers/gpu/drm/i915/gt/gen6_ppgtt.c
index 1aee5e6b1b23..de3aa79b788e 100644
--- a/drivers/gpu/drm/i915/gt/gen6_ppgtt.c
+++ b/drivers/gpu/drm/i915/gt/gen6_ppgtt.c
@@ -433,7 +433,9 @@ struct i915_ppgtt *gen6_ppgtt_create(struct intel_gt *gt)
ppgtt->base.vm.pd_shift = ilog2(SZ_4K * SZ_4K / sizeof(gen6_pte_t));
ppgtt->base.vm.top = 1;
- ppgtt->base.vm.bind_async_flags = I915_VMA_LOCAL_BIND;
+ if (!intel_vm_no_concurrent_access_wa(gt->i915))
+ ppgtt->base.vm.bind_async_flags = I915_VMA_LOCAL_BIND;
+
ppgtt->base.vm.allocate_va_range = gen6_alloc_va_range;
ppgtt->base.vm.clear_range = gen6_ppgtt_clear_range;
ppgtt->base.vm.insert_entries = gen6_ppgtt_insert_entries;
diff --git a/drivers/gpu/drm/i915/gt/gen8_ppgtt.c
b/drivers/gpu/drm/i915/gt/gen8_ppgtt.c
index e3a8924d2286..aa58b0e48ae1 100644
--- a/drivers/gpu/drm/i915/gt/gen8_ppgtt.c
+++ b/drivers/gpu/drm/i915/gt/gen8_ppgtt.c
@@ -732,7 +732,9 @@ struct i915_ppgtt *gen8_ppgtt_create(struct intel_gt *gt)
goto err_free_pd;
}
- ppgtt->vm.bind_async_flags = I915_VMA_LOCAL_BIND;
+ if (!intel_vm_no_concurrent_access_wa(gt->i915))
+ ppgtt->vm.bind_async_flags = I915_VMA_LOCAL_BIND;
+
ppgtt->vm.insert_entries = gen8_ppgtt_insert;
ppgtt->vm.allocate_va_range = gen8_ppgtt_alloc;
ppgtt->vm.clear_range = gen8_ppgtt_clear;
diff --git a/drivers/gpu/drm/i915/gt/intel_ggtt.c
b/drivers/gpu/drm/i915/gt/intel_ggtt.c
index 35069ca5d7de..aafcd0b2ab9b 100644
--- a/drivers/gpu/drm/i915/gt/intel_ggtt.c
+++ b/drivers/gpu/drm/i915/gt/intel_ggtt.c
@@ -914,8 +914,6 @@ static int gen8_gmch_probe(struct i915_ggtt *ggtt)
if (intel_vm_no_concurrent_access_wa(i915)) {
ggtt->vm.insert_entries = bxt_vtd_ggtt_insert_entries__BKL;
ggtt->vm.insert_page = bxt_vtd_ggtt_insert_page__BKL;
- ggtt->vm.bind_async_flags =
- I915_VMA_GLOBAL_BIND | I915_VMA_LOCAL_BIND;
}
ggtt->invalidate = gen8_ggtt_invalidate;
diff --git a/drivers/gpu/drm/i915/i915_vma.c b/drivers/gpu/drm/i915/i915_vma.c
index b319fd3f91cc..d550ee911e68 100644
--- a/drivers/gpu/drm/i915/i915_vma.c
+++ b/drivers/gpu/drm/i915/i915_vma.c
@@ -436,7 +436,7 @@ int i915_vma_bind(struct i915_vma *vma,
work->pinned = i915_gem_object_get(vma->obj);
}
} else {
- vma->ops->bind_vma(vma->vm, NULL, vma, cache_level, bind_flags);
+ vma->ops->bind_vma(vma->vm, work ? &work->stash : NULL, vma,
cache_level, bind_flags);
}
atomic_or(bind_flags, &vma->flags);
@@ -895,7 +895,7 @@ int i915_vma_pin_ww(struct i915_vma *vma, struct
i915_gem_ww_ctx *ww,
if (flags & PIN_GLOBAL)
wakeref = intel_runtime_pm_get(&vma->vm->i915->runtime_pm);
- if (flags & vma->vm->bind_async_flags) {
+ if ((flags & vma->vm->bind_async_flags) || vma->vm->allocate_va_range) {
/* lock VM */
err = i915_vm_lock_objects(vma->vm, ww);
if (err)
--
2.31.0
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