diff options
| author | aliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-08-18 18:00:31 +0000 |
|---|---|---|
| committer | aliguori <aliguori@c046a42c-6fe2-441c-8c8c-71466251a162> | 2008-08-18 18:00:31 +0000 |
| commit | ca1c9e154b3b077aadf459a8aaf90196c0726452 (patch) | |
| tree | e9231f19cc5800e3fa3773064466bba5f1aabe5f /target-i386/helper.c | |
| parent | 681f8c29aaa375b2b46ff81844b9bfa594538f43 (diff) | |
i386: Catch all non-present ptes in cpu_get_phys_page_debug (Jan Kiszka)
It helps debugging guests when yet unmapped pages are correctly reported
as, well, unmapped.
Signed-off-by: Jan Kiszka <jan.kiszka@web.de>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5025 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'target-i386/helper.c')
| -rw-r--r-- | target-i386/helper.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/target-i386/helper.c b/target-i386/helper.c index 7962d6b381..2b59f2368a 100644 --- a/target-i386/helper.c +++ b/target-i386/helper.c @@ -1192,6 +1192,8 @@ target_phys_addr_t cpu_get_phys_page_debug(CPUState *env, target_ulong addr) page_size = 4096; pte = ldq_phys(pte_addr); } + if (!(pte & PG_PRESENT_MASK)) + return -1; } else { uint32_t pde; |