diff options
| author | Mark Kettenis <kettenis@cvs.openbsd.org> | 2020-07-30 12:52:55 +0000 |
|---|---|---|
| committer | Mark Kettenis <kettenis@cvs.openbsd.org> | 2020-07-30 12:52:55 +0000 |
| commit | 93bc75d37d0a7332de5573d7b6b658ff59008e29 (patch) | |
| tree | 0c2e29b215c79f77d3024c71bbabdc877cea5a9d /sys | |
| parent | 030834654f62cd8ab6c4d805e9ac2387c9d354f9 (diff) | |
Only invalidate "user" SLB entry if it is currently set.
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/arch/powerpc64/powerpc64/pmap.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/sys/arch/powerpc64/powerpc64/pmap.c b/sys/arch/powerpc64/powerpc64/pmap.c index a0b3f18e052..e929306e33e 100644 --- a/sys/arch/powerpc64/powerpc64/pmap.c +++ b/sys/arch/powerpc64/powerpc64/pmap.c @@ -1,4 +1,4 @@ -/* $OpenBSD: pmap.c,v 1.38 2020/07/25 10:11:38 kettenis Exp $ */ +/* $OpenBSD: pmap.c,v 1.39 2020/07/30 12:52:54 kettenis Exp $ */ /* * Copyright (c) 2015 Martin Pieuchot @@ -455,10 +455,12 @@ pmap_unset_user_slb(void) curpcb->pcb_userva = 0; - isync(); - slbie(ci->ci_kernel_slb[31].slb_slbe); - isync(); - + if (ci->ci_kernel_slb[31].slb_slbe != 0) { + isync(); + slbie(ci->ci_kernel_slb[31].slb_slbe); + isync(); + } + ci->ci_kernel_slb[31].slb_slbe = 0; ci->ci_kernel_slb[31].slb_slbv = 0; } |