diff options
| author | Ingo Molnar <mingo@elte.hu> | 2008-07-12 07:30:05 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-12 07:30:05 +0200 |
| commit | 1ba89386db0a3f39590b90b5dd20d7149ae52de0 (patch) | |
| tree | 7211f558d841cb40e1015d0b7527643ad55cb8e7 /include/xen/interface/xen.h | |
| parent | a26929fb489188ff959b1715ee67f0c9f84405b5 (diff) | |
| parent | ae94b8075a2ed58d2318ef03827b25bc844f844e (diff) | |
Merge branch 'x86/core' into x86/x2apic
Diffstat (limited to 'include/xen/interface/xen.h')
| -rw-r--r-- | include/xen/interface/xen.h | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/include/xen/interface/xen.h b/include/xen/interface/xen.h index 819a0331cda..2befa3e2f1b 100644 --- a/include/xen/interface/xen.h +++ b/include/xen/interface/xen.h @@ -114,9 +114,14 @@ * ptr[:2] -- Machine address within the frame whose mapping to modify. * The frame must belong to the FD, if one is specified. * val -- Value to write into the mapping entry. + * + * ptr[1:0] == MMU_PT_UPDATE_PRESERVE_AD: + * As MMU_NORMAL_PT_UPDATE above, but A/D bits currently in the PTE are ORed + * with those in @val. */ -#define MMU_NORMAL_PT_UPDATE 0 /* checked '*ptr = val'. ptr is MA. */ -#define MMU_MACHPHYS_UPDATE 1 /* ptr = MA of frame to modify entry for */ +#define MMU_NORMAL_PT_UPDATE 0 /* checked '*ptr = val'. ptr is MA. */ +#define MMU_MACHPHYS_UPDATE 1 /* ptr = MA of frame to modify entry for */ +#define MMU_PT_UPDATE_PRESERVE_AD 2 /* atomically: *ptr = val | (*ptr&(A|D)) */ /* * MMU EXTENDED OPERATIONS |