diff options
| author | alc <alc@FreeBSD.org> | 2008-07-28 04:59:48 +0000 |
|---|---|---|
| committer | alc <alc@FreeBSD.org> | 2008-07-28 04:59:48 +0000 |
| commit | 93ecf09bb705a27a049f0406b4a3aff1b8b2e41d (patch) | |
| tree | c8eb19fb274695b0ec00391a682d615010f27383 /sys/amd64 | |
| parent | 4dbcd0e70fa651c0d0a0c20c215c4a254c5e2ba5 (diff) | |
| download | FreeBSD-src-93ecf09bb705a27a049f0406b4a3aff1b8b2e41d.zip FreeBSD-src-93ecf09bb705a27a049f0406b4a3aff1b8b2e41d.tar.gz | |
Don't allow pmap_change_attr() to be applied to the recursive mapping.
Diffstat (limited to 'sys/amd64')
| -rw-r--r-- | sys/amd64/amd64/pmap.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/sys/amd64/amd64/pmap.c b/sys/amd64/amd64/pmap.c index c8a7502..c72f5d3 100644 --- a/sys/amd64/amd64/pmap.c +++ b/sys/amd64/amd64/pmap.c @@ -4365,8 +4365,11 @@ pmap_change_attr(vm_offset_t va, vm_size_t size, int mode) offset = va & PAGE_MASK; size = roundup(offset + size, PAGE_SIZE); - /* Only supported on kernel virtual addresses. */ - if (base <= VM_MAXUSER_ADDRESS) + /* + * Only supported on kernel virtual addresses, including the direct + * map but excluding the recursive map. + */ + if (base < DMAP_MIN_ADDRESS) return (EINVAL); /* |
