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Work around some X86 PAT oddities by using VM_MIXEDMAP instead

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of VM_PFNMAP.
This commit is contained in:
Thomas Hellstrom 2009-02-05 14:12:41 +01:00
parent 869f60aa62
commit b909e98de7
1 changed files with 6 additions and 6 deletions
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12
linux-core/ttm/ttm_bo_vm.c
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@ -139,7 +139,7 @@ static int ttm_bo_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
* consider those bits protected by
* the bo->mutex, as we should be the only writers.
* There shouldn't really be any readers of these bits except
* within vm_insert_pfn()? fork?
* within vm_insert_mixed()? fork?
*
* TODO: Add a list of vmas to the bo, and change the
* vma->vm_page_prot when the object changes caching policy, with
@ -177,7 +177,7 @@ static int ttm_bo_vm_fault(struct vm_area_struct *vma, struct vm_fault *vmf)
pfn = page_to_pfn(page);
}
ret = vm_insert_pfn(vma, address, pfn);
ret = vm_insert_mixed(vma, address, pfn);
/*
* Somebody beat us to this PTE or prefaulting to
@ -276,7 +276,7 @@ static unsigned long ttm_bo_vm_nopfn(struct vm_area_struct *vma,
* consider those bits protected by
* the bo->mutex, as we should be the only writers.
* There shouldn't really be any readers of these bits except
* within vm_insert_pfn()? fork?
* within vm_insert_mixed()? fork?
*
* TODO: Add a list of vmas to the bo, and change the
* vma->vm_page_prot when the object changes caching policy, with
@ -314,7 +314,7 @@ static unsigned long ttm_bo_vm_nopfn(struct vm_area_struct *vma,
pfn = page_to_pfn(page);
}
ret = vm_insert_pfn(vma, address, pfn);
ret = vm_insert_mixed(vma, address, pfn);
if (unlikely(ret == -EBUSY || (ret != 0 && i != 0)))
break;
@ -407,7 +407,7 @@ int ttm_bo_mmap(struct file *filp, struct vm_area_struct *vma,
*/
vma->vm_private_data = bo;
vma->vm_flags |= VM_RESERVED | VM_IO | VM_PFNMAP | VM_DONTEXPAND;
vma->vm_flags |= VM_RESERVED | VM_IO | VM_MIXEDMAP | VM_DONTEXPAND;
return 0;
out_unref:
ttm_bo_unref(&bo);
@ -421,7 +421,7 @@ int ttm_fbdev_mmap(struct vm_area_struct *vma, struct ttm_buffer_object *bo)
vma->vm_ops = &ttm_bo_vm_ops;
vma->vm_private_data = ttm_bo_reference(bo);
vma->vm_flags |= VM_RESERVED | VM_IO | VM_PFNMAP | VM_DONTEXPAND;
vma->vm_flags |= VM_RESERVED | VM_IO | VM_MIXEDMAP | VM_DONTEXPAND;
return 0;
}