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vapier 12/05/30 22:59:53 |
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|
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Modified: ChangeLog |
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Added: 908_all_grub-0.97-no-sse.patch |
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Log: |
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Disable use of extended insn sets (like SSE) in early boot code #360513#115 by Bartosz Brachaczek. |
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|
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Revision Changes Path |
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1.15 src/patchsets/grub/0.97/ChangeLog |
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|
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file : http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/grub/0.97/ChangeLog?rev=1.15&view=markup |
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plain: http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/grub/0.97/ChangeLog?rev=1.15&content-type=text/plain |
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diff : http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/grub/0.97/ChangeLog?r1=1.14&r2=1.15 |
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|
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Index: ChangeLog |
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=================================================================== |
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RCS file: /var/cvsroot/gentoo/src/patchsets/grub/0.97/ChangeLog,v |
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retrieving revision 1.14 |
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retrieving revision 1.15 |
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diff -u -r1.14 -r1.15 |
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--- ChangeLog 30 May 2012 22:58:06 -0000 1.14 |
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+++ ChangeLog 30 May 2012 22:59:53 -0000 1.15 |
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@@ -1,6 +1,11 @@ |
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# ChangeLog for grub patchset |
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# Copyright 1999-2012 Gentoo Foundation; Distributed under the GPL v2 |
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-# $Header: /var/cvsroot/gentoo/src/patchsets/grub/0.97/ChangeLog,v 1.14 2012/05/30 22:58:06 vapier Exp $ |
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+# $Header: /var/cvsroot/gentoo/src/patchsets/grub/0.97/ChangeLog,v 1.15 2012/05/30 22:59:53 vapier Exp $ |
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+ |
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+ 30 May 2012; Mike Frysinger <vapier@g.o> |
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+ +908_all_grub-0.97-no-sse.patch: |
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+ Disable use of extended insn sets (like SSE) in early boot code #360513#115 |
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+ by Bartosz Brachaczek. |
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|
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30 May 2012; Mike Frysinger <vapier@g.o> |
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-400_all_grub-0.97-reiser4-20050808-gentoo.patch, |
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|
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|
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|
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1.1 src/patchsets/grub/0.97/908_all_grub-0.97-no-sse.patch |
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|
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file : http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/grub/0.97/908_all_grub-0.97-no-sse.patch?rev=1.1&view=markup |
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plain: http://sources.gentoo.org/viewvc.cgi/gentoo/src/patchsets/grub/0.97/908_all_grub-0.97-no-sse.patch?rev=1.1&content-type=text/plain |
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|
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Index: 908_all_grub-0.97-no-sse.patch |
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=================================================================== |
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if we let the user's CFLAGS or default settings take effect, we might end up |
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generating code that uses SSE. but that doesn't work in real mode, so compile |
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with -march set to the target tuple's cpu to avoid that, and any other ISA |
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extensions in the early boot code. |
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|
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http://wiki.osdev.org/SSE#Adding_support |
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|
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https://bugs.gentoo.org/360513 |
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|
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--- a/configure.ac |
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+++ b/configure.ac |
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@@ -20,8 +20,12 @@ |
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AC_CANONICAL_HOST |
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|
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case "$host_cpu" in |
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-i[[3456]]86) host_cpu=i386 ;; |
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-x86_64) host_cpu=x86_64 ;; |
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+i[[3456]]86) |
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+ STAGE_MARCH="-march=$host_cpu" |
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+ host_cpu=i386 ;; |
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+x86_64) |
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+ STAGE_MARCH="-march=i686" |
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+ host_cpu=x86_64 ;; |
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*) AC_MSG_ERROR([unsupported CPU type]) ;; |
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esac |
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|
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@@ -124,8 +127,8 @@ |
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fi |
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fi |
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|
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-STAGE1_CFLAGS="$STAGE1_CFLAGS -fno-strict-aliasing" |
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-STAGE2_CFLAGS="$STAGE2_CFLAGS -fno-strict-aliasing" |
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+STAGE1_CFLAGS="$STAGE1_CFLAGS -fno-strict-aliasing $STAGE_MARCH" |
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+STAGE2_CFLAGS="$STAGE2_CFLAGS -fno-strict-aliasing $STAGE_MARCH" |
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GRUB_CFLAGS="$GRUB_CFLAGS -fno-strict-aliasing" |
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AC_SUBST(STAGE1_CFLAGS) |
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AC_SUBST(STAGE2_CFLAGS) |
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