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| author | Jeremy Fitzhardinge <jeremy@goop.org> | 2007-05-02 19:27:13 +0200 |
|---|---|---|
| committer | Andi Kleen <andi@basil.nowhere.org> | 2007-05-02 19:27:13 +0200 |
| commit | 3dc494e86d1c93afd4c66385f270899dbfae483d (patch) | |
| tree | 6583b57492dc91ef7cc6c23a233f7d5bb95bb5f6 /include/asm-i386/pgtable.h | |
| parent | [PATCH] i386: PARAVIRT: use paravirt_nop to consistently mark no-op operations (diff) | |
| download | linux-3dc494e86d1c93afd4c66385f270899dbfae483d.tar.xz linux-3dc494e86d1c93afd4c66385f270899dbfae483d.zip | |
[PATCH] i386: PARAVIRT: Add pagetable accessors to pack and unpack pagetable entries
Add a set of accessors to pack, unpack and modify page table entries
(at all levels). This allows a paravirt implementation to control the
contents of pgd/pmd/pte entries. For example, Xen uses this to
convert the (pseudo-)physical address into a machine address when
populating a pagetable entry, and converting back to pphys address
when an entry is read.
Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Acked-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to '')
| -rw-r--r-- | include/asm-i386/pgtable.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/asm-i386/pgtable.h b/include/asm-i386/pgtable.h index 143ddc42b86f..147f2553784d 100644 --- a/include/asm-i386/pgtable.h +++ b/include/asm-i386/pgtable.h @@ -266,6 +266,8 @@ static inline pte_t pte_mkhuge(pte_t pte) { (pte).pte_low |= _PAGE_PSE; return p #define pte_update(mm, addr, ptep) do { } while (0) #define pte_update_defer(mm, addr, ptep) do { } while (0) #define paravirt_map_pt_hook(slot, va, pfn) do { } while (0) + +#define raw_ptep_get_and_clear(xp) native_ptep_get_and_clear(xp) #endif /* |