From 396bcb41e035df7b98fb150ca950bf213e70ae7b Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20K=C3=B6nig?= <christian.koenig@amd.com>
Date: Mon, 9 Oct 2017 14:45:09 +0200
Subject: [PATCH] drm/amdgpu: partial revert VRAM lost handling v2
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Keep blocking the CS, but revert everything else. Mapping BOs and info IOCTL
are harmless and can still happen even when VRAM content ist lost.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Nicolai Hähnle <nicolai.haehnle@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---
drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c | 11 -----------
drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c | 5 -----
drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c | 14 ++++++++++----
3 files changed, 10 insertions(+), 20 deletions(-)
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
index 5de092eab0fa0..0c07df72743c5 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_cs.c
@@ -1272,16 +1272,12 @@ int amdgpu_cs_wait_ioctl(struct drm_device *dev, void *data,
{
union drm_amdgpu_wait_cs *wait = data;
struct amdgpu_device *adev = dev->dev_private;
- struct amdgpu_fpriv *fpriv = filp->driver_priv;
unsigned long timeout = amdgpu_gem_timeout(wait->in.timeout);
struct amdgpu_ring *ring = NULL;
struct amdgpu_ctx *ctx;
struct dma_fence *fence;
long r;
- if (amdgpu_kms_vram_lost(adev, fpriv))
- return -ENODEV;
-
ctx = amdgpu_ctx_get(filp->driver_priv, wait->in.ctx_id);
if (ctx == NULL)
return -EINVAL;
@@ -1350,16 +1346,12 @@ int amdgpu_cs_fence_to_handle_ioctl(struct drm_device *dev, void *data,
struct drm_file *filp)
{
struct amdgpu_device *adev = dev->dev_private;
- struct amdgpu_fpriv *fpriv = filp->driver_priv;
union drm_amdgpu_fence_to_handle *info = data;
struct dma_fence *fence;
struct drm_syncobj *syncobj;
struct sync_file *sync_file;
int fd, r;
- if (amdgpu_kms_vram_lost(adev, fpriv))
- return -ENODEV;
-
fence = amdgpu_cs_get_fence(adev, filp, &info->in.fence);
if (IS_ERR(fence))
return PTR_ERR(fence);
@@ -1521,15 +1513,12 @@ int amdgpu_cs_wait_fences_ioctl(struct drm_device *dev, void *data,
struct drm_file *filp)
{
struct amdgpu_device *adev = dev->dev_private;
- struct amdgpu_fpriv *fpriv = filp->driver_priv;
union drm_amdgpu_wait_fences *wait = data;
uint32_t fence_count = wait->in.fence_count;
struct drm_amdgpu_fence *fences_user;
struct drm_amdgpu_fence *fences;
int r;
- if (amdgpu_kms_vram_lost(adev, fpriv))
- return -ENODEV;
/* Get the fences from userspace */
fences = kmalloc_array(fence_count, sizeof(struct drm_amdgpu_fence),
GFP_KERNEL);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
index 21e99366cab3d..fb72edc4c0263 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_gem.c
@@ -579,11 +579,6 @@ int amdgpu_gem_va_ioctl(struct drm_device *dev, void *data,
args->operation);
return -EINVAL;
}
- if ((args->operation == AMDGPU_VA_OP_MAP) ||
- (args->operation == AMDGPU_VA_OP_REPLACE)) {
- if (amdgpu_kms_vram_lost(adev, fpriv))
- return -ENODEV;
- }
INIT_LIST_HEAD(&list);
INIT_LIST_HEAD(&duplicates);
diff --git a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
index 82e8d43b235a8..f759836d10ef4 100644
--- a/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
+++ b/drivers/gpu/drm/amd/amdgpu/amdgpu_kms.c
@@ -270,7 +270,6 @@ static int amdgpu_firmware_info(struct drm_amdgpu_info_firmware *fw_info,
static int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file *filp)
{
struct amdgpu_device *adev = dev->dev_private;
- struct amdgpu_fpriv *fpriv = filp->driver_priv;
struct drm_amdgpu_info *info = data;
struct amdgpu_mode_info *minfo = &adev->mode_info;
void __user *out = (void __user *)(uintptr_t)info->return_pointer;
@@ -283,8 +282,6 @@ static int amdgpu_info_ioctl(struct drm_device *dev, void *data, struct drm_file
if (!info->return_size || !info->return_pointer)
return -EINVAL;
- if (amdgpu_kms_vram_lost(adev, fpriv))
- return -ENODEV;
switch (info->query) {
case AMDGPU_INFO_ACCEL_WORKING:
@@ -792,10 +789,19 @@ void amdgpu_driver_lastclose_kms(struct drm_device *dev)
vga_switcheroo_process_delayed_switch();
}
+/**
+ * amdgpu_kms_vram_lost - check if VRAM was lost for this client
+ *
+ * @adev: amdgpu device
+ * @fpriv: client private
+ *
+ * Check if all CS is blocked for the client because of lost VRAM
+ */
bool amdgpu_kms_vram_lost(struct amdgpu_device *adev,
struct amdgpu_fpriv *fpriv)
{
- return fpriv->vram_lost_counter != atomic_read(&adev->vram_lost_counter);
+ return fpriv->vram_lost_counter !=
+ atomic_read(&adev->vram_lost_counter);
}
/**
--
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