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| author | Jeremy Fitzhardinge <jeremy@goop.org> | 2008-06-25 00:19:12 -0400 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-08 13:11:01 +0200 |
| commit | eba0045ff87bab465d3c80c289f3bf709c1800f5 (patch) | |
| tree | e015805494c1ddb427fa568619163913270963bd /include/asm-x86/pgalloc.h | |
| parent | 67350a5c4514c280665cdb45439d32a008a264ba (diff) | |
| download | blackbird-op-linux-eba0045ff87bab465d3c80c289f3bf709c1800f5.tar.gz blackbird-op-linux-eba0045ff87bab465d3c80c289f3bf709c1800f5.zip | |
x86/paravirt: add a pgd_alloc/free hooks
Add hooks which are called at pgd_alloc/free time. The pgd_alloc hook
may return an error code, which if non-zero, causes the pgd allocation
to be failed. The hooks may be used to allocate/free auxillary
per-pgd information.
also fix:
> * Ingo Molnar <mingo@elte.hu> wrote:
>
> include/asm/pgalloc.h: In function ‘paravirt_pgd_free':
> include/asm/pgalloc.h:14: error: parameter name omitted
> arch/x86/kernel/entry_64.S: In file included from
> arch/x86/kernel/traps_64.c:51:include/asm/pgalloc.h: In function ‘paravirt_pgd_free':
> include/asm/pgalloc.h:14: error: parameter name omitted
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Cc: xen-devel <xen-devel@lists.xensource.com>
Cc: Stephen Tweedie <sct@redhat.com>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: Mark McLoughlin <markmc@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'include/asm-x86/pgalloc.h')
| -rw-r--r-- | include/asm-x86/pgalloc.h | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/include/asm-x86/pgalloc.h b/include/asm-x86/pgalloc.h index 91e4641f3f31..d63ea431cb3b 100644 --- a/include/asm-x86/pgalloc.h +++ b/include/asm-x86/pgalloc.h @@ -5,9 +5,13 @@ #include <linux/mm.h> /* for struct page */ #include <linux/pagemap.h> +static inline int __paravirt_pgd_alloc(struct mm_struct *mm) { return 0; } + #ifdef CONFIG_PARAVIRT #include <asm/paravirt.h> #else +#define paravirt_pgd_alloc(mm) __paravirt_pgd_alloc(mm) +static inline void paravirt_pgd_free(struct mm_struct *mm, pgd_t *pgd) {} static inline void paravirt_alloc_pte(struct mm_struct *mm, unsigned long pfn) {} static inline void paravirt_alloc_pmd(struct mm_struct *mm, unsigned long pfn) {} static inline void paravirt_alloc_pmd_clone(unsigned long pfn, unsigned long clonepfn, |
