Messages in this thread Patch in this message | | | From | Jeremy Fitzhardinge <> | Subject | [PATCH 13/16] x86: make /dev/mem mappings _PAGE_IOMAP | Date | Wed, 27 May 2009 00:15:35 -0700 |
| |
From: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Use _PAGE_IOMAP on /dev/mem mappings.
[ Impact: allow hardware to be mapped via /dev/mem in Xen ]
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> --- arch/x86/mm/pat.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/arch/x86/mm/pat.c b/arch/x86/mm/pat.c index 5ba8d88..3f7886f 100644 --- a/arch/x86/mm/pat.c +++ b/arch/x86/mm/pat.c @@ -494,7 +494,7 @@ int free_memtype(u64 start, u64 end) pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn, unsigned long size, pgprot_t vma_prot) { - return vma_prot; + return __pgprot(pgprot_val(vma_prot) | _PAGE_IOMAP); } #ifdef CONFIG_STRICT_DEVMEM -- 1.6.0.6
| |