diff options
| author | Russell King <rmk@dyn-67.arm.linux.org.uk> | 2007-02-20 22:13:30 +0300 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2007-02-20 22:13:30 +0300 |
| commit | 5a84d159061d914c8dd4aa372ac6e9529c2be453 (patch) | |
| tree | 9b08af78085334af44414adafe0096276f8fe0ff /include/asm-generic/pgtable.h | |
| parent | e80a0e6e7ccdf64575d4384cb4172860422f5b81 (diff) | |
| parent | 7d477a04a619e90ee08724e8f2d8803c6bdfcef8 (diff) | |
| download | linux-5a84d159061d914c8dd4aa372ac6e9529c2be453.tar.xz | |
Merge ARM fixes
Diffstat (limited to 'include/asm-generic/pgtable.h')
| -rw-r--r-- | include/asm-generic/pgtable.h | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h index 9d774d07d95b..00c23433b39f 100644 --- a/include/asm-generic/pgtable.h +++ b/include/asm-generic/pgtable.h @@ -183,6 +183,19 @@ static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addres #endif /* + * A facility to provide batching of the reload of page tables with the + * actual context switch code for paravirtualized guests. By convention, + * only one of the lazy modes (CPU, MMU) should be active at any given + * time, entry should never be nested, and entry and exits should always + * be paired. This is for sanity of maintaining and reasoning about the + * kernel code. + */ +#ifndef __HAVE_ARCH_ENTER_LAZY_CPU_MODE +#define arch_enter_lazy_cpu_mode() do {} while (0) +#define arch_leave_lazy_cpu_mode() do {} while (0) +#endif + +/* * When walking page tables, get the address of the next boundary, * or the end address of the range if that comes earlier. Although no * vma end wraps to 0, rounded up __boundary may wrap to 0 throughout. |