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Date: Thu, 9 Jan 2003 12:18:01 -0800 (PST)
From: Linus Torvalds <torvalds@transmeta.com>
To: Luca Barbieri <ldb@ldb.ods.org>
cc: Linux-Kernel ML <linux-kernel@vger.kernel.org>
Subject: Re: [PATCH] Use %ebp rather than %ebx for thread_info pointer
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On Thu, 9 Jan 2003, Luca Barbieri wrote:
>
> This patch changes assembly code that accesses thread_info to use %ebp
> rather than %ebx. 
> 
> This allows me to take advantage of the fact that %ebp is restored by
> user mode in the sysenter register pop removal patch.

Hmm.. Did you check what fork/execve/vm86 do? I know at least the vm86()  
stuff sets up %ebx before calling the asm functions in entry.S, I bet 
those need to be changed to use %ebp too with something like this.

		Linus

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