Date: Fri, 16 Sep 2016 12:18:22 +0000 (UTC) From: Andrew Turner <andrew@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-11@freebsd.org Subject: svn commit: r305880 - stable/11/sys/arm64/arm64 Message-ID: <201609161218.u8GCIMGX009211@repo.freebsd.org>
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Author: andrew Date: Fri Sep 16 12:18:22 2016 New Revision: 305880 URL: https://svnweb.freebsd.org/changeset/base/305880 Log: 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 Modified: stable/11/sys/arm64/arm64/pmap.c Directory Properties: stable/11/ (props changed) Modified: stable/11/sys/arm64/arm64/pmap.c ============================================================================== --- stable/11/sys/arm64/arm64/pmap.c Fri Sep 16 12:17:01 2016 (r305879) +++ stable/11/sys/arm64/arm64/pmap.c Fri Sep 16 12:18:22 2016 (r305880) @@ -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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