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| author | Ben Dooks <ben-linux@fluff.org> | 2008-07-15 20:19:14 +0100 |
|---|---|---|
| committer | Ben Dooks <ben-linux@fluff.org> | 2008-07-15 20:19:14 +0100 |
| commit | 0c17e4ceedd35c78b1c7413dbd16279a350be6bc (patch) | |
| tree | 313b3b9ca04727f3704464e01d8dd97da1dd534b /include/xen/interface/xen.h | |
| parent | 19c1d6a34abf73d0baf8e325d018c920fa78dddc (diff) | |
| parent | b9d2252c1e44fa83a4e65fdc9eb93db6297c55af (diff) | |
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 into for-rmk
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 |