vgpu ballon info consists of four drm_mm_node which is used to reserve
ggtt space, then linux guest won't use these reserved ggtt space.
Each vgpu has its own ballon info, so move ballon info into
i915_virtual_gpu structure.
Signed-off-by: Xiong Zhang <xiong.y.zhang@xxxxxxxxx>
---
drivers/gpu/drm/i915/i915_drv.h | 14 ++++++++++++
drivers/gpu/drm/i915/i915_vgpu.c | 49 ++++++++++++++++++++--------------------
2 files changed, 38 insertions(+), 25 deletions(-)
diff --git a/drivers/gpu/drm/i915/i915_drv.h b/drivers/gpu/drm/i915/i915_drv.h
index 18be8b2..9c14095 100644
--- a/drivers/gpu/drm/i915/i915_drv.h
+++ b/drivers/gpu/drm/i915/i915_drv.h
@@ -1024,6 +1024,20 @@ struct i915_frontbuffer_tracking {
struct i915_virtual_gpu {
bool active;
u32 caps;
+
+ struct balloon_info {
+ /*
+ * There are up to 2 regions per mappable/unmappable graphic
+ * memory that might be ballooned. Here, index 0/1 is for
+ * mappable graphic memory, 2/3 for unmappable graphic memory.
+ */
+#define VGPU_MAPPABLE_BALLOON_LOW 0
+#define VGPU_MAPPABLE_BALLOON_HIGH 1
+#define VGPU_UNMAPPABLE_BALLOON_LOW 2
+#define VGPU_UNMAPPABLE_BALLOON_HIGH 3
+#define VGPU_MAX_BALLOON_NUM 4
+ struct drm_mm_node space[VGPU_MAX_BALLOON_NUM];
+ } bl_info;
};
/* used in computing the new watermarks state */
diff --git a/drivers/gpu/drm/i915/i915_vgpu.c b/drivers/gpu/drm/i915/i915_vgpu.c
index d2fd66f..3cc53e6 100644
--- a/drivers/gpu/drm/i915/i915_vgpu.c
+++ b/drivers/gpu/drm/i915/i915_vgpu.c
@@ -105,17 +105,6 @@ bool intel_vgpu_has_full_ppgtt(struct drm_i915_private *dev_priv)
return dev_priv->vgpu.caps & VGT_CAPS_FULL_PPGTT;
}
-struct _balloon_info_ {
- /*
- * There are up to 2 regions per mappable/unmappable graphic
- * memory that might be ballooned. Here, index 0/1 is for mappable
- * graphic memory, 2/3 for unmappable graphic memory.
- */
- struct drm_mm_node space[4];
-};
-
-static struct _balloon_info_ bl_info;
-
static void vgt_deballoon_space(struct i915_ggtt *ggtt,
struct drm_mm_node *node)
{
@@ -140,15 +129,16 @@ static void vgt_deballoon_space(struct i915_ggtt *ggtt,
*/
void intel_vgt_deballoon(struct i915_ggtt *ggtt)
{
+ struct drm_i915_private *dev_priv = ggtt->vm.i915;
int i;
- if (!intel_vgpu_active(ggtt->vm.i915))
+ if (!intel_vgpu_active(dev_priv))
return;
DRM_DEBUG("VGT deballoon.\n");
- for (i = 0; i < 4; i++)
- vgt_deballoon_space(ggtt, &bl_info.space[i]);
+ for (i = 0; i < VGPU_MAX_BALLOON_NUM; i++)
+ vgt_deballoon_space(ggtt, &dev_priv->vgpu.bl_info.space[i]);
}
static int vgt_balloon_space(struct i915_ggtt *ggtt,
@@ -219,6 +209,7 @@ static int vgt_balloon_space(struct i915_ggtt *ggtt,
int intel_vgt_balloon(struct i915_ggtt *ggtt)
{
struct intel_uncore *uncore = &ggtt->vm.i915->uncore;
+ struct balloon_info *bl_info;
unsigned long ggtt_end = ggtt->vm.total;
unsigned long mappable_base, mappable_size, mappable_end;
@@ -253,34 +244,39 @@ int intel_vgt_balloon(struct i915_ggtt *ggtt)
return -EINVAL;
}
+ bl_info = &ggtt->vm.i915->vgpu.bl_info;
/* Unmappable graphic memory ballooning */
if (unmappable_base > ggtt->mappable_end) {
- ret = vgt_balloon_space(ggtt, &bl_info.space[2],
- ggtt->mappable_end, unmappable_base);
+ ret = vgt_balloon_space(ggtt,
+ &bl_info->space[VGPU_UNMAPPABLE_BALLOON_LOW],
+ ggtt->mappable_end, unmappable_base);
if (ret)
goto err;
}
if (unmappable_end < ggtt_end) {
- ret = vgt_balloon_space(ggtt, &bl_info.space[3],
- unmappable_end, ggtt_end);
+ ret = vgt_balloon_space(ggtt,
+ &bl_info->space[VGPU_UNMAPPABLE_BALLOON_HIGH],
+ unmappable_end, ggtt_end);
if (ret)
goto err_upon_mappable;
}
/* Mappable graphic memory ballooning */
if (mappable_base) {
- ret = vgt_balloon_space(ggtt, &bl_info.space[0],
- 0, mappable_base);
+ ret = vgt_balloon_space(ggtt,
+ &bl_info->space[VGPU_MAPPABLE_BALLOON_LOW],
+ 0, mappable_base);
if (ret)
goto err_upon_unmappable;
}
if (mappable_end < ggtt->mappable_end) {
- ret = vgt_balloon_space(ggtt, &bl_info.space[1],
- mappable_end, ggtt->mappable_end);
+ ret = vgt_balloon_space(ggtt,
+ &bl_info->space[VGPU_MAPPABLE_BALLOON_HIGH],
+ mappable_end, ggtt->mappable_end);
if (ret)
goto err_below_mappable;
@@ -290,11 +286,14 @@ int intel_vgt_balloon(struct i915_ggtt *ggtt)
return 0;
err_below_mappable:
- vgt_deballoon_space(ggtt, &bl_info.space[0]);
+ vgt_deballoon_space(ggtt,
+ &bl_info->space[VGPU_MAPPABLE_BALLOON_LOW]);
err_upon_unmappable:
- vgt_deballoon_space(ggtt, &bl_info.space[3]);
+ vgt_deballoon_space(ggtt,
+ &bl_info->space[VGPU_UNMAPPABLE_BALLOON_HIGH]);
err_upon_mappable:
- vgt_deballoon_space(ggtt, &bl_info.space[2]);
+ vgt_deballoon_space(ggtt,
+ &bl_info->space[VGPU_UNMAPPABLE_BALLOON_LOW]);
err:
DRM_ERROR("VGT balloon fail\n");
return ret;
--
2.7.4
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