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| author | Tim Deegan <Tim.Deegan@xensource.com> | 2006-11-01 10:31:11 +0000 |
|---|---|---|
| committer | Tim Deegan <Tim.Deegan@xensource.com> | 2006-11-01 10:31:11 +0000 |
| commit | 3369945812356d7f05796fcc68b0f28055d6a13e (patch) | |
| tree | 621a96dd4a4dffcd9a5c7966dddaa8170c79e52e /xen/include/asm-x86/shadow.h | |
| parent | 4861255f5c66ca4e5462b2bb6ff1f724f863550b (diff) | |
| download | xen-3369945812356d7f05796fcc68b0f28055d6a13e.tar.gz xen-3369945812356d7f05796fcc68b0f28055d6a13e.tar.bz2 xen-3369945812356d7f05796fcc68b0f28055d6a13e.zip | |
[XEN] Prefetch multiple shadow entries per pagefault
Also, clean up the shadow *_propagate/fault routines.
This allows us to quickly dispatch some guest-not-present faults
and most MMIO accesses without taking the shadow lock.
Signed-off-by: Tim Deegan <Tim.Deegan@xensource.com>
Diffstat (limited to 'xen/include/asm-x86/shadow.h')
| -rw-r--r-- | xen/include/asm-x86/shadow.h | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/xen/include/asm-x86/shadow.h b/xen/include/asm-x86/shadow.h index d020251379..9e3bcb4caf 100644 --- a/xen/include/asm-x86/shadow.h +++ b/xen/include/asm-x86/shadow.h @@ -161,8 +161,10 @@ extern int shadow_audit_enable; */ #define SHOPT_WRITABLE_HEURISTIC 0x01 /* Guess at RW PTEs via linear maps */ #define SHOPT_EARLY_UNSHADOW 0x02 /* Unshadow l1s on fork or exit */ +#define SHOPT_FAST_FAULT_PATH 0x04 /* Fast-path MMIO and not-present */ +#define SHOPT_PREFETCH 0x08 /* Shadow multiple entries per fault */ -#define SHADOW_OPTIMIZATIONS 0x03 +#define SHADOW_OPTIMIZATIONS 0x0f /* With shadow pagetables, the different kinds of address start |