Re: Athlon PSE/AGP Bug

[Andrea Arcangeli]

On Mon, Jan 21, 2002 at 05:07:45PM -0800, David S. Miller wrote:
>    From: Andrea Arcangeli <[e-mail]>
>    Date: Tue, 22 Jan 2002 01:37:43 +0100
> 
>    On Mon, Jan 21, 2002 at 02:19:31PM -0800, David S. Miller wrote:
>    > That's not true, see the ptrace() helper code.  Russell King pointed
>    > this out to me last week and it's on my TODO list to fix it up.
>    
>    Where? :) ptrace doesn't change pagetables, no need to flush any tlb in
>    ptrace.
>    
> egrep flush_*_page kernel/ptrace.c:access_process_vm()

that is not a tlb flush, it's a noop on x86 infact.

andrea@athlon:~/devel/kernel/2.4.18pre4aa1> egrep tlb kernel/ptrace.c
andrea@athlon:~/devel/kernel/2.4.18pre4aa1> 

Andrea