Author: kib Date: Sun Aug 23 19:47:27 2020 New Revision: 364517 URL: https://svnweb.freebsd.org/changeset/base/364517
Log: Reserve FreeBSD ELF feature control bit LA48 to control VA layout on amd64. Tested by: pho Sponsored by: The FreeBSD Foundation Differential revision: https://reviews.freebsd.org/D25273 Modified: head/sys/sys/elf_common.h head/usr.bin/elfctl/elfctl.c Modified: head/sys/sys/elf_common.h ============================================================================== --- head/sys/sys/elf_common.h Sun Aug 23 19:47:10 2020 (r364516) +++ head/sys/sys/elf_common.h Sun Aug 23 19:47:27 2020 (r364517) @@ -796,6 +796,7 @@ typedef struct { #define NT_FREEBSD_FCTL_PROTMAX_DISABLE 0x00000002 #define NT_FREEBSD_FCTL_STKGAP_DISABLE 0x00000004 #define NT_FREEBSD_FCTL_WXNEEDED 0x00000008 +#define NT_FREEBSD_FCTL_LA48 0x00000010 /* Values for n_type. Used in core files. */ #define NT_PRSTATUS 1 /* Process status. */ Modified: head/usr.bin/elfctl/elfctl.c ============================================================================== --- head/usr.bin/elfctl/elfctl.c Sun Aug 23 19:47:10 2020 (r364516) +++ head/usr.bin/elfctl/elfctl.c Sun Aug 23 19:47:27 2020 (r364517) @@ -67,6 +67,7 @@ static struct ControlFeatures featurelist[] = { "Disable implicit PROT_MAX" }, { "stackgap", NT_FREEBSD_FCTL_STKGAP_DISABLE, "Disable stack gap" }, { "wxneeded", NT_FREEBSD_FCTL_WXNEEDED, "Requires W+X mappings" }, + { "la48", NT_FREEBSD_FCTL_LA48, "amd64: Limit user VA to 48bit" }, }; static struct option long_opts[] = { _______________________________________________ [email protected] mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-head To unsubscribe, send any mail to "[email protected]"
