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| author | Christian König <deathsimple@vodafone.de> | 2012-09-11 16:09:59 +0200 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2012-09-20 13:10:42 -0400 |
| commit | ca19f21ece0ad96c77f45a01c43f3bb582f1a35c (patch) | |
| tree | 0b0f5da266221d6a06b87c5affb8ed471b474aff | |
| parent | 96a5844f90a6d3b1c0cabfe4870e62e7b1cc4640 (diff) | |
| download | op-kernel-dev-ca19f21ece0ad96c77f45a01c43f3bb582f1a35c.zip op-kernel-dev-ca19f21ece0ad96c77f45a01c43f3bb582f1a35c.tar.gz | |
drm/radeon: move IB pool to 1MB offset
Even GPUs can have a null pointer dereference, so move
the IB pool to another offset to catch those.
Signed-off-by: Christian König <deathsimple@vodafone.de>
Reviewed-by: Jerome Glisse <jglisse@redhat.com>
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon.h | 1 | ||||
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_gart.c | 2 | ||||
| -rw-r--r-- | drivers/gpu/drm/radeon/radeon_ring.c | 6 |
3 files changed, 5 insertions, 4 deletions
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h index d48bd30..55f17f9 100644 --- a/drivers/gpu/drm/radeon/radeon.h +++ b/drivers/gpu/drm/radeon/radeon.h @@ -123,6 +123,7 @@ extern int radeon_lockup_timeout; #define CAYMAN_RING_TYPE_CP2_INDEX 2 /* hardcode those limit for now */ +#define RADEON_VA_IB_OFFSET (1 << 20) #define RADEON_VA_RESERVED_SIZE (8 << 20) #define RADEON_IB_VM_MAX_SIZE (64 << 10) diff --git a/drivers/gpu/drm/radeon/radeon_gart.c b/drivers/gpu/drm/radeon/radeon_gart.c index 5694421..1b1c001 100644 --- a/drivers/gpu/drm/radeon/radeon_gart.c +++ b/drivers/gpu/drm/radeon/radeon_gart.c @@ -980,7 +980,7 @@ int radeon_vm_init(struct radeon_device *rdev, struct radeon_vm *vm) /* map the ib pool buffer at 0 in virtual address space, set * read only */ - r = radeon_vm_bo_add(rdev, vm, rdev->ring_tmp_bo.bo, 0, + r = radeon_vm_bo_add(rdev, vm, rdev->ring_tmp_bo.bo, RADEON_VA_IB_OFFSET, RADEON_VM_PAGE_READABLE | RADEON_VM_PAGE_SNOOPED); return r; } diff --git a/drivers/gpu/drm/radeon/radeon_ring.c b/drivers/gpu/drm/radeon/radeon_ring.c index 993cf71..d90b0bc 100644 --- a/drivers/gpu/drm/radeon/radeon_ring.c +++ b/drivers/gpu/drm/radeon/radeon_ring.c @@ -79,10 +79,10 @@ int radeon_ib_get(struct radeon_device *rdev, int ring, ib->ptr = radeon_sa_bo_cpu_addr(ib->sa_bo); ib->vm = vm; if (vm) { - /* ib pool is bind at 0 in virtual address space, - * so gpu_addr is the offset inside the pool bo + /* ib pool is bound at RADEON_VA_IB_OFFSET in virtual address + * space and soffset is the offset inside the pool bo */ - ib->gpu_addr = ib->sa_bo->soffset; + ib->gpu_addr = ib->sa_bo->soffset + RADEON_VA_IB_OFFSET; } else { ib->gpu_addr = radeon_sa_bo_gpu_addr(ib->sa_bo); } |
