Date: Sun, 6 Sep 2009 15:23:03 +0000 (UTC) From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-7@freebsd.org Subject: svn commit: r196894 - stable/7/sys/vm Message-ID: <200909061523.n86FN3QP087453@svn.freebsd.org>
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Author: kib Date: Sun Sep 6 15:23:03 2009 New Revision: 196894 URL: http://svn.freebsd.org/changeset/base/196894 Log: Partial MFC of r194459 by thompsa, without merge recording, to allow the vm_phys_paddr_to_vm_page(9) to return NULL instead of panicking when supplied physical address does not correspond to a vm page. This is needed for device pager (and not yet merged sg pager) to skip memattr checks on specific addresses. Reported by: Thierry Herbelot <thierry.herbelot free fr> Modified: stable/7/sys/vm/vm_phys.c Modified: stable/7/sys/vm/vm_phys.c ============================================================================== --- stable/7/sys/vm/vm_phys.c Sun Sep 6 14:23:26 2009 (r196893) +++ stable/7/sys/vm/vm_phys.c Sun Sep 6 15:23:03 2009 (r196894) @@ -382,8 +382,7 @@ vm_phys_paddr_to_vm_page(vm_paddr_t pa) if (pa >= seg->start && pa < seg->end) return (&seg->first_page[atop(pa - seg->start)]); } - panic("vm_phys_paddr_to_vm_page: paddr %#jx is not in any segment", - (uintmax_t)pa); + return (NULL); } /*
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