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drm: PAGE_CACHE_WC is x86 only so far

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The page protections need to be checked whether they need to be more flexible.

Signed-off-by: Dave Airlie <airlied@redhat.com>
This commit is contained in:
Dave Airlie 2008-12-11 17:06:35 +10:00
parent aa91c6665a
commit ae14dc0505
1 changed files with 2 additions and 0 deletions
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2
drivers/gpu/drm/drm_gem.c
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@ -516,7 +516,9 @@ int drm_gem_mmap(struct file *filp, struct vm_area_struct *vma)
vma->vm_private_data = map->handle; vma->vm_private_data = map->handle;
/* FIXME: use pgprot_writecombine when available */ /* FIXME: use pgprot_writecombine when available */
prot = pgprot_val(vma->vm_page_prot); prot = pgprot_val(vma->vm_page_prot);
#ifdef CONFIG_X86
prot |= _PAGE_CACHE_WC; prot |= _PAGE_CACHE_WC;
#endif
vma->vm_page_prot = __pgprot(prot); vma->vm_page_prot = __pgprot(prot);
vma->vm_file = filp; /* Needed for drm_vm_open() */ vma->vm_file = filp; /* Needed for drm_vm_open() */