drm: PAGE_CACHE_WC is x86 only so far
The page protections need to be checked whether they need to be more flexible. Signed-off-by: Dave Airlie <airlied@redhat.com>
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@ -516,7 +516,9 @@ int drm_gem_mmap(struct file *filp, struct vm_area_struct *vma)
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vma->vm_private_data = map->handle;
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/* FIXME: use pgprot_writecombine when available */
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prot = pgprot_val(vma->vm_page_prot);
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#ifdef CONFIG_X86
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prot |= _PAGE_CACHE_WC;
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#endif
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vma->vm_page_prot = __pgprot(prot);
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vma->vm_file = filp; /* Needed for drm_vm_open() */
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