linux-kernel - 2.6.22-rc1 does not boot on VIA C3_2 cause of X86

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Message-ID: <464B9D2C.7040704@cv-sv.de>
Date:	Thu, 17 May 2007 02:09:16 +0200
From:	Christian <haveaniceday@...sv.de>
To:	linux-kernel@...r.kernel.org
Subject: 2.6.22-rc1 does not boot on VIA C3_2 cause of X86_CMPXCHG64

Hi,

my small VIA C3_2 box does not boot with 2.6.22-rc1.
It even does not uncompress the kernel.

The configuration as M386 M486 works. But M586 + MVIAC3_2
does not work.

solution for me, cahnge arch/i386/Kconfig.cpu

--- arch/i386/Kconfig.cpu.before     2007-05-17 01:38:26.000000000 +0200
+++ arch/i386/Kconfig.cpu       2007-05-17 00:54:52.000000000 +0200
@@ -299,5 +299,5 @@

 config X86_CMPXCHG64
        bool
-       depends on !M386 && !M486
+       depends on !M386 && !M486 && !MVIAC3_2
        default y

The related #ifdef is in ./include/asm-i386/cmpxchg.h
May be cmpxchg8b is not supported by VIAC3_2 ?

May be some other non Intel/AMD need to be excluded from X86_CMPXCHG64 ?
May be the generic option CONFIG_X86_GENERIC need to switch this off also ?

Just write an email to me if you want to send a patch to test on a C3_2.

Best regards,

Christian

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