diff options
| author | Patrick Wildt <patrick@cvs.openbsd.org> | 2017-01-21 09:23:20 +0000 |
|---|---|---|
| committer | Patrick Wildt <patrick@cvs.openbsd.org> | 2017-01-21 09:23:20 +0000 |
| commit | 48be71b5f29f221dd2a371a5d3c806d85b14b31e (patch) | |
| tree | b81881ab7cc0ffdddca970d5f77e263fced1facb /sys | |
| parent | 42be79b9c7de3f0b600e6eeccc68549af9ddc8e6 (diff) | |
Only switch the pagetable if we were asked to switch to a user
process. This seems to happen when we switch away from a proc
to kill it. We should probably start keeping a 'dummy' table
around.
Diffstat (limited to 'sys')
| -rw-r--r-- | sys/arch/arm64/arm64/pmap.c | 9 |
1 files changed, 6 insertions, 3 deletions
diff --git a/sys/arch/arm64/arm64/pmap.c b/sys/arch/arm64/arm64/pmap.c index b1a23309704..77e6f189240 100644 --- a/sys/arch/arm64/arm64/pmap.c +++ b/sys/arch/arm64/arm64/pmap.c @@ -1,4 +1,4 @@ -/* $OpenBSD: pmap.c,v 1.9 2017/01/14 00:32:34 jsg Exp $ */ +/* $OpenBSD: pmap.c,v 1.10 2017/01/21 09:23:19 patrick Exp $ */ /* * Copyright (c) 2008-2009,2014-2016 Dale Rahn <drahn@dalerahn.com> * @@ -2379,7 +2379,10 @@ pmap_setttb(struct proc *p, paddr_t pagedir, struct pcb *pcb) } //printf("switching userland to %p %p asid %d new asid %d\n", // pm, pmap_kernel(), oasid, pm->pm_asid); - } - __asm volatile ("msr ttbr0_el1, %x0" :: "r"(pagedir)); + __asm volatile("msr ttbr0_el1, %x0" :: "r"(pagedir)); + __asm volatile("dsb sy"); + } else { + // XXX what to do if switching to kernel pmap !?!? + } } |