Date: Sun, 18 Jan 2009 18:26:52 +0000 (UTC) From: Alan Cox <alc@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: r187400 - in stable/7/sys: . contrib/pf dev/ath/ath_hal dev/cxgb kern Message-ID: <200901181826.n0IIQqed082847@svn.freebsd.org>
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Author: alc Date: Sun Jan 18 18:26:52 2009 New Revision: 187400 URL: http://svn.freebsd.org/changeset/base/187400 Log: MFC rev 179887 Enforce the mapping of kernel loadable modules in the uppermost 2GB of the kernel virtual address space on amd64. Modified: stable/7/sys/ (props changed) stable/7/sys/contrib/pf/ (props changed) stable/7/sys/dev/ath/ath_hal/ (props changed) stable/7/sys/dev/cxgb/ (props changed) stable/7/sys/kern/link_elf_obj.c Modified: stable/7/sys/kern/link_elf_obj.c ============================================================================== --- stable/7/sys/kern/link_elf_obj.c Sun Jan 18 17:54:03 2009 (r187399) +++ stable/7/sys/kern/link_elf_obj.c Sun Jan 18 18:26:52 2009 (r187400) @@ -667,6 +667,13 @@ link_elf_load_file(linker_class_t cls, c goto out; } ef->address = (caddr_t) vm_map_min(kernel_map); + + /* + * In order to satisfy amd64's architectural requirements on the + * location of code and data in the kernel's address space, request a + * mapping that is above the kernel. + */ + mapbase = KERNBASE; error = vm_map_find(kernel_map, ef->object, 0, &mapbase, round_page(mapsize), TRUE, VM_PROT_ALL, VM_PROT_ALL, FALSE); if (error) {
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