diff options
| author | Mark Kettenis <kettenis@cvs.openbsd.org> | 2017-03-24 19:48:02 +0000 |
|---|---|---|
| committer | Mark Kettenis <kettenis@cvs.openbsd.org> | 2017-03-24 19:48:02 +0000 |
| commit | 960bf034a5224117584e38bc930e1d381bdc960b (patch) | |
| tree | 0fc568aa4e9de34b8fd1260b78a3fe20feea9800 /sys/arch/arm64/include/pmap.h | |
| parent | 8d5c49ada92e0203a01619c68ff09ca71b5a503b (diff) | |
Simplify ASID allocation code considerably by allocating an ASID up front
when a pmap is created and freeing it when the pmap is destroyed. This
diff relies on the fill 16-bit ASID space being implemented in the processor.
While this is documented as an optional feature in the ARMv8 architecture
reference manual, all ARMv8 processors seen in the wild so far implement
the full 16-bit space. This change incorporates changes by drahn@ to
allocate an empty page table for the lower half of the address space for the
kernel.
ok drahn@, patrick@
Diffstat (limited to 'sys/arch/arm64/include/pmap.h')
| -rw-r--r-- | sys/arch/arm64/include/pmap.h | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/sys/arch/arm64/include/pmap.h b/sys/arch/arm64/include/pmap.h index 413bdaf53c1..7bd09ce59ae 100644 --- a/sys/arch/arm64/include/pmap.h +++ b/sys/arch/arm64/include/pmap.h @@ -1,4 +1,4 @@ -/* $OpenBSD: pmap.h,v 1.3 2017/03/16 20:15:07 kettenis Exp $ */ +/* $OpenBSD: pmap.h,v 1.4 2017/03/24 19:48:01 kettenis Exp $ */ /* * Copyright (c) 2008,2009,2014 Dale Rahn <drahn@dalerahn.com> * @@ -70,7 +70,6 @@ struct pmap { uint64_t pm_pt0pa; int have_4_level_pt; int pm_asid; - int pm_active; int pm_refs; /* ref count */ struct pmap_statistics pm_stats; /* pmap statistics */ }; |