direct-io.hg
changeset 10800:dc26ac2f7718
[IA64] don't change NaTPAGE into WB
Xen/IA64 changes memory attributes of tlb into WB to prevent domU from
uncachable access. But NaTPage attribute need not to be changed to WB.
Linux uses NaTPage attributes.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
`
Xen/IA64 changes memory attributes of tlb into WB to prevent domU from
uncachable access. But NaTPage attribute need not to be changed to WB.
Linux uses NaTPage attributes.
Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp>
`
| author | awilliam@xenbuild.aw |
|---|---|
| date | Mon Jul 10 14:14:11 2006 -0600 (2006-07-10) |
| parents | d7a511069a32 |
| children | dab0a5650e6d |
| files | xen/arch/ia64/xen/mm.c |
line diff
1.1 --- a/xen/arch/ia64/xen/mm.c Mon Jul 10 14:12:47 2006 -0600 1.2 +++ b/xen/arch/ia64/xen/mm.c Mon Jul 10 14:14:11 2006 -0600 1.3 @@ -475,8 +475,11 @@ u64 translate_domain_pte(u64 pteval, u64 1.4 * Don't let non-dom0 domains map uncached addresses. This can 1.5 * happen when domU tries to touch i/o port space. Also prevents 1.6 * possible address aliasing issues. 1.7 + * WB => WB 1.8 + * UC, UCE, WC => WB 1.9 + * NaTPage => NaTPage 1.10 */ 1.11 - if (d != dom0) 1.12 + if (d != dom0 && (pteval2 & _PAGE_MA_MASK) != _PAGE_MA_NAT) 1.13 pteval2 &= ~_PAGE_MA_MASK; 1.14 1.15 return pteval2;