Author: andrew
Date: Wed Aug 10 10:13:34 2016
New Revision: 303903
URL: https://svnweb.freebsd.org/changeset/base/303903
Log:
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
MFC after: 1 month
Sponsored by: The FreeBSD Foundation
Modified:
head/sys/arm64/arm64/pmap.c
Modified: head/sys/arm64/arm64/pmap.c
==============================================================================
--- head/sys/arm64/arm64/pmap.c Wed Aug 10 08:05:48 2016 (r303902)
+++ head/sys/arm64/arm64/pmap.c Wed Aug 10 10:13:34 2016 (r303903)
@@ -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;
}
/**
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