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| author | kaf24@firebug.cl.cam.ac.uk <kaf24@firebug.cl.cam.ac.uk> | 2005-08-15 07:45:42 +0000 |
|---|---|---|
| committer | kaf24@firebug.cl.cam.ac.uk <kaf24@firebug.cl.cam.ac.uk> | 2005-08-15 07:45:42 +0000 |
| commit | 4d976a0a9f641cad0f59283c8f6e594ce94f4be9 (patch) | |
| tree | f67e5c38cc124a957edb8745f1f0a1e65e41dd14 | |
| parent | 1f5e0290a0710777e9d618f043f39bd24863fb6f (diff) | |
| download | xen-4d976a0a9f641cad0f59283c8f6e594ce94f4be9.tar.gz xen-4d976a0a9f641cad0f59283c8f6e594ce94f4be9.tar.bz2 xen-4d976a0a9f641cad0f59283c8f6e594ce94f4be9.zip | |
Fix special backptr values on x86/64 to avoid spurious
wrpt emulations.
Signed-off-by: Keir Fraser <keir@xensource.com>
Signed-off-by: Jun Nakajima <jun.nakajima@intel.com>
| -rw-r--r-- | xen/include/asm-x86/mm.h | 7 |
1 files changed, 2 insertions, 5 deletions
diff --git a/xen/include/asm-x86/mm.h b/xen/include/asm-x86/mm.h index 3c378a28df..9147b631bd 100644 --- a/xen/include/asm-x86/mm.h +++ b/xen/include/asm-x86/mm.h @@ -90,12 +90,9 @@ struct pfn_info #define PGT_va_shift 32 #define PGT_va_mask ((unsigned long)((1U<<28)-1)<<PGT_va_shift) /* Is the back pointer still mutable (i.e. not fixed yet)? */ - /* Use PML4 slot for HYPERVISOR_VIRT_START. - 18 = L4_PAGETABLE_SHIFT - L2_PAGETABLE_SHIFT */ -#define PGT_va_mutable ((unsigned long)(256U<<18)<<PGT_va_shift) +#define PGT_va_mutable ((unsigned long)((1U<<28)-1)<<PGT_va_shift) /* Is the back pointer unknown (e.g., p.t. is mapped at multiple VAs)? */ - /* Use PML4 slot for HYPERVISOR_VIRT_START + 1 */ -#define PGT_va_unknown ((unsigned long)(257U<<18)<<PGT_va_shift) +#define PGT_va_unknown ((unsigned long)((1U<<28)-2)<<PGT_va_shift) #endif /* 16-bit count of uses of this frame as its current type. */ |