From 2b1aee3238aa97d8697f954de7e74553cd79518a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Christian=20K=C3=B6nig?= <ckoenig.leichtzumerken@gmail.com>
Date: Fri, 27 Sep 2019 14:34:25 +0200
Subject: drm/radeon: finally fix the racy VMA setup
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Git-commit: 165d3448a1a0e8646cf62f2e31a0602651a81a60
Patch-mainline: v5.6-rc1
References: jsc#SLE-12680, jsc#SLE-12880, jsc#SLE-12882, jsc#SLE-12883, jsc#SLE-13496, jsc#SLE-15322
Finally clean up the VMA setup for radeon now that TTM exports the
necessary functions.
No functional change, but only compile tested.
Signed-off-by: Christian König <christian.koenig@amd.com>
Reviewed-by: Huang Rui <ray.huang@amd.com>
Acked-by: Alex Deucher <alexander.deucher@amd.com>
Link: https://patchwork.freedesktop.org/patch/339354/
Signed-off-by: Patrik Jakobsson <pjakobsson@suse.de>
---
drivers/gpu/drm/radeon/radeon_ttm.c | 29 ++++++++++++++---------------
1 file changed, 14 insertions(+), 15 deletions(-)
diff --git a/drivers/gpu/drm/radeon/radeon_ttm.c b/drivers/gpu/drm/radeon/radeon_ttm.c
index 15bf8a207cb0..11f703845ad1 100644
--- a/drivers/gpu/drm/radeon/radeon_ttm.c
+++ b/drivers/gpu/drm/radeon/radeon_ttm.c
@@ -881,9 +881,6 @@ void radeon_ttm_set_active_vram_size(struct radeon_device *rdev, u64 size)
man->size = size >> PAGE_SHIFT;
}
-static struct vm_operations_struct radeon_ttm_vm_ops;
-static const struct vm_operations_struct *ttm_vm_ops = NULL;
-
static vm_fault_t radeon_ttm_fault(struct vm_fault *vmf)
{
struct ttm_buffer_object *bo;
@@ -891,34 +888,36 @@ static vm_fault_t radeon_ttm_fault(struct vm_fault *vmf)
vm_fault_t ret;
bo = (struct ttm_buffer_object *)vmf->vma->vm_private_data;
- if (bo == NULL) {
+ if (bo == NULL)
return VM_FAULT_NOPAGE;
- }
+
rdev = radeon_get_rdev(bo->bdev);
down_read(&rdev->pm.mclk_lock);
- ret = ttm_vm_ops->fault(vmf);
+ ret = ttm_bo_vm_fault(vmf);
up_read(&rdev->pm.mclk_lock);
return ret;
}
+static struct vm_operations_struct radeon_ttm_vm_ops = {
+ .fault = radeon_ttm_fault,
+ .open = ttm_bo_vm_open,
+ .close = ttm_bo_vm_close,
+ .access = ttm_bo_vm_access
+};
+
int radeon_mmap(struct file *filp, struct vm_area_struct *vma)
{
int r;
struct drm_file *file_priv = filp->private_data;
struct radeon_device *rdev = file_priv->minor->dev->dev_private;
- if (rdev == NULL) {
+ if (rdev == NULL)
return -EINVAL;
- }
+
r = ttm_bo_mmap(filp, vma, &rdev->mman.bdev);
- if (unlikely(r != 0)) {
+ if (unlikely(r != 0))
return r;
- }
- if (unlikely(ttm_vm_ops == NULL)) {
- ttm_vm_ops = vma->vm_ops;
- radeon_ttm_vm_ops = *ttm_vm_ops;
- radeon_ttm_vm_ops.fault = &radeon_ttm_fault;
- }
+
vma->vm_ops = &radeon_ttm_vm_ops;
return 0;
}
--
2.28.0