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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 /arch/i386/kernel/vmi.c | |
| parent | [PATCH] i386: PARAVIRT: use paravirt_nop to consistently mark no-op operations (diff) | |
| download | linux-dev-3dc494e86d1c93afd4c66385f270899dbfae483d.tar.xz linux-dev-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-- | arch/i386/kernel/vmi.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/arch/i386/kernel/vmi.c b/arch/i386/kernel/vmi.c index 8f3bac473450..ea77d93f59dd 100644 --- a/arch/i386/kernel/vmi.c +++ b/arch/i386/kernel/vmi.c @@ -443,13 +443,13 @@ static void vmi_release_pd(u32 pfn) ((level) | (is_current_as(mm, user) ? \ (VMI_PAGE_DEFER | VMI_PAGE_CURRENT_AS | ((addr) & VMI_PAGE_VA_MASK)) : 0)) -static void vmi_update_pte(struct mm_struct *mm, u32 addr, pte_t *ptep) +static void vmi_update_pte(struct mm_struct *mm, unsigned long addr, pte_t *ptep) { vmi_check_page_type(__pa(ptep) >> PAGE_SHIFT, VMI_PAGE_PTE); vmi_ops.update_pte(ptep, vmi_flags_addr(mm, addr, VMI_PAGE_PT, 0)); } -static void vmi_update_pte_defer(struct mm_struct *mm, u32 addr, pte_t *ptep) +static void vmi_update_pte_defer(struct mm_struct *mm, unsigned long addr, pte_t *ptep) { vmi_check_page_type(__pa(ptep) >> PAGE_SHIFT, VMI_PAGE_PTE); vmi_ops.update_pte(ptep, vmi_flags_addr_defer(mm, addr, VMI_PAGE_PT, 0)); @@ -462,7 +462,7 @@ static void vmi_set_pte(pte_t *ptep, pte_t pte) vmi_ops.set_pte(pte, ptep, VMI_PAGE_PT); } -static void vmi_set_pte_at(struct mm_struct *mm, u32 addr, pte_t *ptep, pte_t pte) +static void vmi_set_pte_at(struct mm_struct *mm, unsigned long addr, pte_t *ptep, pte_t pte) { vmi_check_page_type(__pa(ptep) >> PAGE_SHIFT, VMI_PAGE_PTE); vmi_ops.set_pte(pte, ptep, vmi_flags_addr(mm, addr, VMI_PAGE_PT, 0)); |