diff options
| author | Jeremy Fitzhardinge <jeremy@goop.org> | 2008-05-26 18:31:06 -0400 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2008-05-27 04:11:36 -0400 |
| commit | a15af1c9ea2750a9ff01e51615c45950bad8221b (patch) | |
| tree | b4167c16c23365d016180b20248c724902e0c954 /drivers/lguest | |
| parent | 239d1fc04ed0b58d638096b12a7f6d50269d30c9 (diff) | |
x86/paravirt: add pte_flags to just get pte flags
Add pte_flags() to extract the flags from a pte. This is a special
case of pte_val() which is only guaranteed to return the pte's flags
correctly; the page number may be corrupted or missing.
The intent is to allow paravirt implementations to return pte flags
without having to do any translation of the page number (most notably,
Xen).
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'drivers/lguest')
| -rw-r--r-- | drivers/lguest/lg.h | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/drivers/lguest/lg.h b/drivers/lguest/lg.h index 005bd045d2eb..5faefeaf6790 100644 --- a/drivers/lguest/lg.h +++ b/drivers/lguest/lg.h | |||
| @@ -136,7 +136,6 @@ int run_guest(struct lg_cpu *cpu, unsigned long __user *user); | |||
| 136 | * first step in the migration to the kernel types. pte_pfn is already defined | 136 | * first step in the migration to the kernel types. pte_pfn is already defined |
| 137 | * in the kernel. */ | 137 | * in the kernel. */ |
| 138 | #define pgd_flags(x) (pgd_val(x) & ~PAGE_MASK) | 138 | #define pgd_flags(x) (pgd_val(x) & ~PAGE_MASK) |
| 139 | #define pte_flags(x) (pte_val(x) & ~PAGE_MASK) | ||
| 140 | #define pgd_pfn(x) (pgd_val(x) >> PAGE_SHIFT) | 139 | #define pgd_pfn(x) (pgd_val(x) >> PAGE_SHIFT) |
| 141 | 140 | ||
| 142 | /* interrupts_and_traps.c: */ | 141 | /* interrupts_and_traps.c: */ |