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Re: [Qemu-devel] [PATCH 00/17] RFC: userfault v2
From: |
Peter Maydell |
Subject: |
Re: [Qemu-devel] [PATCH 00/17] RFC: userfault v2 |
Date: |
Wed, 29 Oct 2014 17:56:59 +0000 |
On 29 October 2014 17:46, Andrea Arcangeli <address@hidden> wrote:
> After some chat during the KVMForum I've been already thinking it
> could be beneficial for some usage to give userland the information
> about the fault being read or write
...I wonder if that would let us replace the current nasty
mess we use in linux-user to detect read vs write faults
(which uses a bunch of architecture-specific hacks including
in some cases "look at the insn that triggered this SEGV and
decode it to see if it was a load or a store"; see the
various cpu_signal_handler() implementations in user-exec.c).
-- PMM
Re: [Qemu-devel] [PATCH 00/17] RFC: userfault v2, zhanghailiang, 2014/10/27
- Re: [Qemu-devel] [PATCH 00/17] RFC: userfault v2, Andrea Arcangeli, 2014/10/29
- Re: [Qemu-devel] [PATCH 00/17] RFC: userfault v2,
Peter Maydell <=
- Re: [Qemu-devel] [PATCH 00/17] RFC: userfault v2, zhanghailiang, 2014/10/30
- Re: [Qemu-devel] [PATCH 00/17] RFC: userfault v2, Peter Feiner, 2014/10/31
- Re: [Qemu-devel] [PATCH 00/17] RFC: userfault v2, zhanghailiang, 2014/10/31
- Re: [Qemu-devel] [PATCH 00/17] RFC: userfault v2, zhanghailiang, 2014/10/31
- Re: [Qemu-devel] [PATCH 00/17] RFC: userfault v2, Andres Lagar-Cavilla, 2014/10/31
- Re: [Qemu-devel] [PATCH 00/17] RFC: userfault v2, zhanghailiang, 2014/10/31
Re: [Qemu-devel] [PATCH 00/17] RFC: userfault v2, Peter Feiner, 2014/10/31
Re: [Qemu-devel] [PATCH 00/17] RFC: userfault v2, Dr. David Alan Gilbert, 2014/10/31
Re: [Qemu-devel] [PATCH 00/17] RFC: userfault v2, zhanghailiang, 2014/10/31