diff options
| author | Jan Kiszka <jan.kiszka@siemens.com> | 2012-03-06 15:22:02 +0100 |
|---|---|---|
| committer | Blue Swirl <blauwirbel@gmail.com> | 2012-03-11 11:22:39 +0000 |
| commit | 3f2cbf0d1a1340bed4a63e05b044c46df93f4768 (patch) | |
| tree | c6ef216ba1164a3649444af31d266dd53a73c1b1 /target-i386/cpu.h | |
| parent | dac6b1b22cbad29ca34735a1e56c9feb9586e3c0 (diff) | |
target-i386: Mask NX bit from cpu_get_phys_page_debug result
This was a long pending bug, now revealed by the assert in
phys_page_find that stumbled over the large page index returned by
cpu_get_phys_page_debug for NX-marked pages: We need to mask out NX and
all user-definable bits 52..62 from PDEs and the final PTE to avoid
corrupting physical addresses.
Reviewed-by: Avi Kivity <avi@redhat.com>
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Diffstat (limited to 'target-i386/cpu.h')
| -rw-r--r-- | target-i386/cpu.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/target-i386/cpu.h b/target-i386/cpu.h index 196b0c5c40..36e3d29ea0 100644 --- a/target-i386/cpu.h +++ b/target-i386/cpu.h @@ -241,6 +241,7 @@ #define PG_DIRTY_MASK (1 << PG_DIRTY_BIT) #define PG_PSE_MASK (1 << PG_PSE_BIT) #define PG_GLOBAL_MASK (1 << PG_GLOBAL_BIT) +#define PG_HI_USER_MASK 0x7ff0000000000000LL #define PG_NX_MASK (1LL << PG_NX_BIT) #define PG_ERROR_W_BIT 1 |