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| author |   Xiaoguang Chen <xiaoguang.chen@intel.com> | 2016-11-03 18:38:30 +0800 |
|---|---|---|
| committer |   Zhenyu Wang <zhenyuw@linux.intel.com> | 2016-11-10 15:42:39 +0800 |
| commit | c754936fe66c45d2075970dc1e6ebdfeec4df6f3 (patch) | |
| tree | 203ad09eb6603e7584836985621ecb8b0e2e6879 /drivers/gpu/drm/i915/gvt/scheduler.c | |
| parent | drm/i915/gvt: don't rely on guest PPGTT entry to free old shadow data (diff) | |
| download | linux-dev-c754936fe66c45d2075970dc1e6ebdfeec4df6f3.tar.xz linux-dev-c754936fe66c45d2075970dc1e6ebdfeec4df6f3.zip | |
drm/i915/gvt: use kmap instead of kmap_atomic around guest memory access
kmap_atomic doesn't allow sleep until unmapped. However,
it's necessary to allow sleep during reading/writing guest
memory, so use kmap instead.
Signed-off-by: Bing Niu <bing.niu@intel.com>
Signed-off-by: Xiaoguang Chen <xiaoguang.chen@intel.com>
Signed-off-by: Jike Song <jike.song@intel.com>
Signed-off-by: Zhenyu Wang <zhenyuw@linux.intel.com>
Diffstat (limited to 'drivers/gpu/drm/i915/gvt/scheduler.c')
| -rw-r--r-- | drivers/gpu/drm/i915/gvt/scheduler.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/drivers/gpu/drm/i915/gvt/scheduler.c b/drivers/gpu/drm/i915/gvt/scheduler.c index 843a5de4300d..7d87c43661c5 100644 --- a/drivers/gpu/drm/i915/gvt/scheduler.c +++ b/drivers/gpu/drm/i915/gvt/scheduler.c @@ -89,15 +89,15 @@ static int populate_shadow_context(struct intel_vgpu_workload *workload) } page = i915_gem_object_get_page(ctx_obj, LRC_PPHWSP_PN + i); - dst = kmap_atomic(page); + dst = kmap(page); intel_gvt_hypervisor_read_gpa(vgpu, context_gpa, dst, GTT_PAGE_SIZE); - kunmap_atomic(dst); + kunmap(page); i++; } page = i915_gem_object_get_page(ctx_obj, LRC_STATE_PN); - shadow_ring_context = kmap_atomic(page); + shadow_ring_context = kmap(page); #define COPY_REG(name) \ intel_gvt_hypervisor_read_gpa(vgpu, workload->ring_context_gpa \ @@ -123,7 +123,7 @@ static int populate_shadow_context(struct intel_vgpu_workload *workload) sizeof(*shadow_ring_context), GTT_PAGE_SIZE - sizeof(*shadow_ring_context)); - kunmap_atomic(shadow_ring_context); + kunmap(page); return 0; } @@ -318,10 +318,10 @@ static void update_guest_context(struct intel_vgpu_workload *workload) } page = i915_gem_object_get_page(ctx_obj, LRC_PPHWSP_PN + i); - src = kmap_atomic(page); + src = kmap(page); intel_gvt_hypervisor_write_gpa(vgpu, context_gpa, src, GTT_PAGE_SIZE); - kunmap_atomic(src); + kunmap(page); i++; } @@ -329,7 +329,7 @@ static void update_guest_context(struct intel_vgpu_workload *workload) RING_CTX_OFF(ring_header.val), &workload->rb_tail, 4); page = i915_gem_object_get_page(ctx_obj, LRC_STATE_PN); - shadow_ring_context = kmap_atomic(page); + shadow_ring_context = kmap(page); #define COPY_REG(name) \ intel_gvt_hypervisor_write_gpa(vgpu, workload->ring_context_gpa + \ @@ -347,7 +347,7 @@ static void update_guest_context(struct intel_vgpu_workload *workload) sizeof(*shadow_ring_context), GTT_PAGE_SIZE - sizeof(*shadow_ring_context)); - kunmap_atomic(shadow_ring_context); + kunmap(page); } static void complete_current_workload(struct intel_gvt *gvt, int ring_id) |