diff options
| author | emaste <emaste@FreeBSD.org> | 2014-03-04 21:51:09 +0000 |
|---|---|---|
| committer | emaste <emaste@FreeBSD.org> | 2014-03-04 21:51:09 +0000 |
| commit | 33dce93124a0e70e57403fcbe3ee5591e17eef46 (patch) | |
| tree | 52abc2a834e0fa5629e6caebf9b45d2d65ec5dbc | |
| parent | ed41469327bef074f42d569aee03907897699292 (diff) | |
| download | FreeBSD-src-33dce93124a0e70e57403fcbe3ee5591e17eef46.zip FreeBSD-src-33dce93124a0e70e57403fcbe3ee5591e17eef46.tar.gz | |
Disable amd64 TLB Context ID (pcid) by default for now
There are a number of reports of userspace application crashes that
are "solved" by setting vm.pmap.pcid_enabled=0, including Java and the
x11/mate-terminal port (PR ports/184362).
For now apply a band-aid of disabling pcid by default in stable/10.
Sponsored by: The FreeBSD Foundation
| -rw-r--r-- | sys/amd64/amd64/pmap.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/sys/amd64/amd64/pmap.c b/sys/amd64/amd64/pmap.c index 54b985d..93e32ee 100644 --- a/sys/amd64/amd64/pmap.c +++ b/sys/amd64/amd64/pmap.c @@ -367,7 +367,7 @@ static int pmap_flags = PMAP_PDE_SUPERPAGE; /* flags for x86 pmaps */ static struct unrhdr pcid_unr; static struct mtx pcid_mtx; -int pmap_pcid_enabled = 1; +int pmap_pcid_enabled = 0; SYSCTL_INT(_vm_pmap, OID_AUTO, pcid_enabled, CTLFLAG_RDTUN, &pmap_pcid_enabled, 0, "Is TLB Context ID enabled ?"); int invpcid_works = 0; |
