From mboxrd@z Thu Jan  1 00:00:00 1970
From: "Van Maren, Kevin" <kevin.vanmaren@unisys.com>
Date: Thu, 02 Aug 2001 07:12:50 +0000
Subject: RE: [Linux-ia64] Panic in linuxrc (2.4.7)
Message-Id: <marc-linux-ia64-105590693005991@msgid-missing>
List-Id: <linux-ia64.vger.kernel.org>
References: <marc-linux-ia64-105590693005983@msgid-missing>
In-Reply-To: <marc-linux-ia64-105590693005983@msgid-missing>
MIME-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
To: linux-ia64@vger.kernel.org

> OK, this turns out to be due to an assembler bug: the assembler fails
> to put a stop bit in front of an "alloc" instruction if the "alloc" is
> preceded by a .align directive and the directive inserts one or more
> "nop" bundles. ;-(
> 
> This bug was difficult to track down because it got triggered while
> psr.ic was cleared, which means that the IP reported in the tombstone
> is all wrong and there is no easy way to find out at which address the
> real fault occurred.  Well, at least the workaround is easy:
> 
> --- arch/ia64/kernel/entry.S-orig	Wed Aug  1 12:48:26 2001
> +++ arch/ia64/kernel/entry.S	Wed Aug  1 18:05:31 2001
> @@ -687,7 +687,7 @@
>  	shladd in0=loc1,3,r17
>  	mov in1=0
>  	;;
> -	.align 32
> +//	.align 32
>  rse_clear_invalid:
>  	// cycle 0
>   { .mii
> 
> Please try again with this patch applied.

It boots fine!  Thanks!!!  Is there a bug-report for the gas bug?

Kevin