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Subject[X86/KVM] gcc 3.3 internal error.
From
Date
Hello.

I tried "make allmodconfig" on linux-2.6.30-rc8 using gcc 3.3.5
and got below compilation error.

-----
# make
/usr/src/all/vanilla/src/linux-2.6.30-rc8/arch/x86/Makefile:82: stack protector enabled but no compiler support
CHK include/linux/version.h
CHK include/linux/utsrelease.h
SYMLINK include/asm -> include/asm-x86
CALL scripts/checksyscalls.sh
CHK include/linux/compile.h
CC [M] arch/x86/kvm/x86_emulate.o
{standard input}: Assembler messages:
{standard input}:4274: Warning: end of file not at end of a line; newline inserted
{standard input}:4975: Error: unrecognized symbol type ""
gcc: Internal error: Segmentation fault (program cc1)
Please submit a full bug report.
See <URL:http://gcc.gnu.org/bugs.html> for instructions.
For Debian GNU/Linux specific bug reporting instructions,
see <URL:file:///usr/share/doc/gcc-3.3/README.Bugs>.

make[1]: *** [arch/x86/kvm/x86_emulate.o] Error 1
make: *** [arch/x86/kvm] Error 2
-----

It turned out that linux-2.6.29.4 succeeds, linux-2.6.30-rc1 and later fail.
According to "git bisect", 9e111f3e167a14dd6252cff14fc7dd2ba4c650c6 is the
cause.

-----
$ cat ~/buildtest.sh
#! /bin/sh
make -s allmodconfig || exit 125
touch arch/x86/kvm/x86_emulate.c
make -s arch/x86/kvm/x86_emulate.o 2>&1 | grep -q gcc && exit 1
exit 0
$ git bisect start v2.6.30-rc1 v2.6.29
$ git bisect run ~/buildtest.sh
Bisecting: 5117 revisions left to test after this
(...snipped...)
9e111f3e167a14dd6252cff14fc7dd2ba4c650c6 is first bad commit
commit 9e111f3e167a14dd6252cff14fc7dd2ba4c650c6
Author: Ingo Molnar <mingo@elte.hu>
Date: Tue Jan 27 18:18:25 2009 +0100

x86: move ELAN to the NON_STANDARD_PLATFORM section

Move X86_ELAN (old, AMD based web-boxes) from the subarchitecture
menu to the non-standard-platform section.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

:040000 040000 9d55953d05b0aeac76d59d36dceb90f6358cdfc9 4e806f764ace35e5395c9e95d54840a04eaa43e4 M arch
bisect run success
-----

That commit changed some other config options.

-----
$ diff config-good config-bad
4c4
< # Thu Jun 4 14:00:29 2009
---
> # Thu Jun 4 14:02:48 2009
200d199
< # CONFIG_X86_ELAN is not set
205a205
> CONFIG_X86_ELAN=y
216,241d215
< # CONFIG_M386 is not set
< # CONFIG_M486 is not set
< # CONFIG_M586 is not set
< # CONFIG_M586TSC is not set
< # CONFIG_M586MMX is not set
< CONFIG_M686=y
< # CONFIG_MPENTIUMII is not set
< # CONFIG_MPENTIUMIII is not set
< # CONFIG_MPENTIUMM is not set
< # CONFIG_MPENTIUM4 is not set
< # CONFIG_MK6 is not set
< # CONFIG_MK7 is not set
< # CONFIG_MK8 is not set
< # CONFIG_MCRUSOE is not set
< # CONFIG_MEFFICEON is not set
< # CONFIG_MWINCHIPC6 is not set
< # CONFIG_MWINCHIP3D is not set
< # CONFIG_MGEODEGX1 is not set
< # CONFIG_MGEODE_LX is not set
< # CONFIG_MCYRIXIII is not set
< # CONFIG_MVIAC3_2 is not set
< # CONFIG_MVIAC7 is not set
< # CONFIG_MPSC is not set
< # CONFIG_MCORE2 is not set
< # CONFIG_GENERIC_CPU is not set
< CONFIG_X86_GENERIC=y
246c220
< CONFIG_X86_L1_CACHE_SHIFT=5
---
> CONFIG_X86_L1_CACHE_SHIFT=4
248d221
< CONFIG_X86_PPRO_FENCE=y
253,256c226
< CONFIG_X86_INTEL_USERCOPY=y
< CONFIG_X86_USE_PPRO_CHECKSUM=y
< CONFIG_X86_TSC=y
< CONFIG_X86_CMOV=y
---
> CONFIG_X86_ALIGNMENT_16=y
421a392,393
> CONFIG_ELAN_CPUFREQ=m
> CONFIG_SC520_CPUFREQ=m
-----

Regards.


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