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| author | kib <kib@FreeBSD.org> | 2014-09-20 14:24:48 +0000 |
|---|---|---|
| committer | kib <kib@FreeBSD.org> | 2014-09-20 14:24:48 +0000 |
| commit | 42e5d75eb4732b7263715125594ad5bb40b9d22f (patch) | |
| tree | c1181716db63765145cd6081054a552ac82ac4f0 /sys/i386/i386 | |
| parent | b701075b7bcf07792093013997bbceb79bde0d9e (diff) | |
| download | FreeBSD-src-42e5d75eb4732b7263715125594ad5bb40b9d22f.zip FreeBSD-src-42e5d75eb4732b7263715125594ad5bb40b9d22f.tar.gz | |
MFC r271716:
Presence of any VM_PROT bits in the permission argument on x86 implies
that the entry is readable and valid.
Approved by: re (gjb)
Diffstat (limited to 'sys/i386/i386')
| -rw-r--r-- | sys/i386/i386/pmap.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sys/i386/i386/pmap.c b/sys/i386/i386/pmap.c index d5c2cbe..9e8f2ee 100644 --- a/sys/i386/i386/pmap.c +++ b/sys/i386/i386/pmap.c @@ -3161,7 +3161,8 @@ pmap_protect(pmap_t pmap, vm_offset_t sva, vm_offset_t eva, vm_prot_t prot) pt_entry_t *pte; boolean_t anychanged, pv_lists_locked; - if ((prot & VM_PROT_READ) == VM_PROT_NONE) { + KASSERT((prot & ~VM_PROT_ALL) == 0, ("invalid prot %x", prot)); + if (prot == VM_PROT_NONE) { pmap_remove(pmap, sva, eva); return; } |
