Re: [PATCH] Use %ebp rather than %ebx for thread_info pointer

[Linus Torvalds]

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