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| author | andrew <andrew@FreeBSD.org> | 2016-09-16 12:18:22 +0000 |
|---|---|---|
| committer | andrew <andrew@FreeBSD.org> | 2016-09-16 12:18:22 +0000 |
| commit | 6988d81f6c24331f68a0a14fc5182f031d62628a (patch) | |
| tree | 7666dc73d9de603a5b6f6de5ae1560ac12468558 /sys/arm64 | |
| parent | c27a61a71c09a118a6f37f43d97fe4f084945321 (diff) | |
| download | FreeBSD-src-6988d81f6c24331f68a0a14fc5182f031d62628a.zip FreeBSD-src-6988d81f6c24331f68a0a14fc5182f031d62628a.tar.gz | |
MFC 303903:
Implement pmap_align_superpage on arm64 based on the amd64 implementation.
This will be needed when superpage support is added.
Obtained from: ABT Systems Ltd
Sponsored by: The FreeBSD Foundation
Diffstat (limited to 'sys/arm64')
| -rw-r--r-- | sys/arm64/arm64/pmap.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/sys/arm64/arm64/pmap.c b/sys/arm64/arm64/pmap.c index a451cb17..aa56e50 100644 --- a/sys/arm64/arm64/pmap.c +++ b/sys/arm64/arm64/pmap.c @@ -3490,6 +3490,20 @@ void pmap_align_superpage(vm_object_t object, vm_ooffset_t offset, vm_offset_t *addr, vm_size_t size) { + vm_offset_t superpage_offset; + + if (size < L2_SIZE) + return; + if (object != NULL && (object->flags & OBJ_COLORED) != 0) + offset += ptoa(object->pg_color); + superpage_offset = offset & L2_OFFSET; + if (size - ((L2_SIZE - superpage_offset) & L2_OFFSET) < L2_SIZE || + (*addr & L2_OFFSET) == superpage_offset) + return; + if ((*addr & L2_OFFSET) < superpage_offset) + *addr = (*addr & ~L2_OFFSET) + superpage_offset; + else + *addr = ((*addr + L2_OFFSET) & ~L2_OFFSET) + superpage_offset; } /** |
