only should be used by init.c and init_64.c and init_32.c
Signed-off-by: Yinghai Lu <ying...@kernel.org>
Cc: Konrad Rzeszutek Wilk <konrad.w...@oracle.com>
Cc: Jeremy Fitzhardinge <jer...@goop.org>
---
arch/x86/include/asm/init.h | 2 ++
arch/x86/mm/init.c | 5 +++++
arch/x86/xen/mmu.c | 2 +-
3 files changed, 8 insertions(+), 1 deletions(-)
diff --git a/arch/x86/include/asm/init.h b/arch/x86/include/asm/init.h
index 4f13998..b69e537 100644
--- a/arch/x86/include/asm/init.h
+++ b/arch/x86/include/asm/init.h
@@ -16,4 +16,6 @@ extern unsigned long __initdata pgt_buf_start;
extern unsigned long __meminitdata pgt_buf_end;
extern unsigned long __meminitdata pgt_buf_top;
+bool is_pfn_in_early_pgt_buf(unsigned long pfn);
+
#endif /* _ASM_X86_INIT_32_H */
diff --git a/arch/x86/mm/init.c b/arch/x86/mm/init.c
index 6622d35..1becfbd 100644
--- a/arch/x86/mm/init.c
+++ b/arch/x86/mm/init.c
@@ -21,6 +21,11 @@ unsigned long __initdata pgt_buf_start;
unsigned long __meminitdata pgt_buf_end;
unsigned long __meminitdata pgt_buf_top;
+bool __init is_pfn_in_early_pgt_buf(unsigned long pfn)
+{
+ return pfn >= pgt_buf_start && pfn < pgt_buf_top;
+}
+
int after_bootmem;
int direct_gbpages
diff --git a/arch/x86/xen/mmu.c b/arch/x86/xen/mmu.c
index 7607a33..25f68bc 100644
--- a/arch/x86/xen/mmu.c
+++ b/arch/x86/xen/mmu.c
@@ -1410,7 +1410,7 @@ static pte_t __init mask_rw_pte(pte_t *ptep, pte_t pte)
* If the new pfn is within the range of the newly allocated
* kernel pagetable, make sure it is RO.
*/
- if (pfn >= pgt_buf_start && pfn < pgt_buf_top)
+ if (is_pfn_in_early_pgt_buf(pfn))
pte = pte_wrprotect(pte);
return pte;
--
1.7.7
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
