Fw: [Bugme-new] [Bug 7176] New: Mach64 framebuffer console hangs when compiled with gcc 4.1

[Andrew Morton <akpm@osdl.org>]

Begin forwarded message:

Date: Thu, 21 Sep 2006 05:51:41 -0700
From: bugme-daemon@bugzilla.kernel.org
To: bugme-new@lists.osdl.org
Subject: [Bugme-new] [Bug 7176] New: Mach64 framebuffer console hangs when compiled with gcc 4.1


http://bugzilla.kernel.org/show_bug.cgi?id=7176

           Summary: Mach64 framebuffer console hangs when compiled with gcc
                    4.1
    Kernel Version: 2.6.18
            Status: NEW
          Severity: normal
             Owner: jsimmons@infradead.org
         Submitter: jernej-bugzilla.kernel@ena.si


Most recent kernel where this bug did not occur: ?
Distribution: Gentoo
Hardware Environment: 1) Compaq ProLiant ML330 G2 server [Pentium III 1066MHz] 
2) HP ML350G4 [Xeon 3GHz EM64T]
Software Environment:
Problem Description: I first noticed the problem with Gentoo's 2.6.16-r8 kernel 
on ML330 server (running Debian Etch, but with Gentoo kernel) - kernel compiled 
with GCC 4.0, worked fine, but when I recompiled the same kernel with gcc 
4.1.2, the kernel locks up at bootup, when it's supposed to switch to graphic 
console. I confirmed the same lockup with vanilla 2.6.18 kernel (which is why 
I'm reporting here).
The same thing also happens on ML350G4 server with kernel 2.6.17-gentoo-r8 
[running in 64bit mode] (previous kernel, compiled with gcc 3.4.6 works, but 
when recompiled with gcc 4.1.1, it too locks up in apparently the same way; 
unfortunately I'm not able to test with a vanilla kernel there).

Steps to reproduce: Enable Device Drivers -> Graphics support -> <*> Support 
for frame buffer devices -> <*> ATI Mach64 display support, [*]   Mach64 CT/VT/
GT/LT (incl. 3D RAGE) support, [*]   Mach64 GX support; compile with gcc 4.1.1 
or 4.1.2, boot.

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