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| author | alc <alc@FreeBSD.org> | 2013-11-17 23:28:10 +0000 |
|---|---|---|
| committer | alc <alc@FreeBSD.org> | 2013-11-17 23:28:10 +0000 |
| commit | a21ab9564f9972a893699a0178df90fd60e11b47 (patch) | |
| tree | c0c8bfe8367169acc053ee2b45afc81baad2cead | |
| parent | 2dc825c61c8f2e10a5c2d1e5b3838ac44380a5e2 (diff) | |
| download | FreeBSD-src-a21ab9564f9972a893699a0178df90fd60e11b47.zip FreeBSD-src-a21ab9564f9972a893699a0178df90fd60e11b47.tar.gz | |
Implement pmap_align_superpage().
MFC after: 6 weeks
| -rw-r--r-- | sys/arm/arm/pmap-v6.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/sys/arm/arm/pmap-v6.c b/sys/arm/arm/pmap-v6.c index fb0247b..70f09b2 100644 --- a/sys/arm/arm/pmap-v6.c +++ b/sys/arm/arm/pmap-v6.c @@ -5021,6 +5021,20 @@ 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 < NBPDR) + return; + if (object != NULL && (object->flags & OBJ_COLORED) != 0) + offset += ptoa(object->pg_color); + superpage_offset = offset & PDRMASK; + if (size - ((NBPDR - superpage_offset) & PDRMASK) < NBPDR || + (*addr & PDRMASK) == superpage_offset) + return; + if ((*addr & PDRMASK) < superpage_offset) + *addr = (*addr & ~PDRMASK) + superpage_offset; + else + *addr = ((*addr + PDRMASK) & ~PDRMASK) + superpage_offset; } /* |
