Author: emaste Date: Fri Nov 25 18:57:14 2016 New Revision: 309151 URL: https://svnweb.freebsd.org/changeset/base/309151
Log: Use explicit 0x200000 instead of MAXPAGESIZE for the amd64 kernel physaddr MAXPAGESIZE is not well defined by the GNU ld documentation. Different linkers, and different versions of the same linker, use different MAXPAGESIZE values. Current versions of GNU gold and LLVM's lld use 4K. When set to 4K the kernel panics at boot due to an issue with x86bios. Here we want the kernel physaddr to be the amd64 superpage size, so use that value (2MB) explicitly. With this change GNU gold and LLVM lld can link a working amd64 kernel. PR: 214718 (x86bios) Differential Revision: https://reviews.freebsd.org/D8610 Modified: head/sys/conf/ldscript.amd64 Modified: head/sys/conf/ldscript.amd64 ============================================================================== --- head/sys/conf/ldscript.amd64 Fri Nov 25 18:12:57 2016 (r309150) +++ head/sys/conf/ldscript.amd64 Fri Nov 25 18:57:14 2016 (r309151) @@ -6,7 +6,7 @@ SEARCH_DIR("/usr/lib"); SECTIONS { /* Read-only sections, merged into text segment: */ - kernphys = CONSTANT (MAXPAGESIZE); + kernphys = 0x200000; . = kernbase + kernphys + SIZEOF_HEADERS; /* * Use the AT keyword in order to set the right LMA that contains _______________________________________________ svn-src-all@freebsd.org mailing list https://lists.freebsd.org/mailman/listinfo/svn-src-all To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
