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Re: [Qemu-devel] [PATCH 7/7] PPC64: Don't fault at lwsync
From: |
Paul Brook |
Subject: |
Re: [Qemu-devel] [PATCH 7/7] PPC64: Don't fault at lwsync |
Date: |
Fri, 6 Mar 2009 00:53:46 +0000 |
User-agent: |
KMail/1.9.9 |
On Thursday 05 March 2009, Daniel Jacobowitz wrote:
> On Thu, Mar 05, 2009 at 04:44:30PM +0000, Paul Brook wrote:
> > When an MMU exception occurs, qemu figures out the guest location from
> > the location of the MMU access in guest code (see cpu_restore_state). My
> > guess is that this breaks when two guest instructions have the same
> > location. I'm not entirely sure what the correct fix is, or where the bug
> > lies
> > (cpu_restore_state, gen_intermediate_code_pc, or tcg_gen_code_search_pc)
> > but hopefully this will point you in the right direction.
>
> Automatically pick the second instruction, on the principle that an
> instruction with no opcodes is unlikely to trigger a synchronous
> fault?
Yes, that sounds like the right fix.
Paul
- [Qemu-devel] [PATCH 4/7] Activate uninorth AGP bridge, (continued)
- [Qemu-devel] [PATCH 4/7] Activate uninorth AGP bridge, Alexander Graf, 2009/03/05
- [Qemu-devel] [PATCH 5/7] PPC64: Nop some SPRs on 970fx, Alexander Graf, 2009/03/05
- [Qemu-devel] [PATCH 6/7] PPC64: Enable 64bit mode on interrupts, Alexander Graf, 2009/03/05
- [Qemu-devel] [PATCH 7/7] PPC64: Don't fault at lwsync, Alexander Graf, 2009/03/05
- Re: [Qemu-devel] [PATCH 7/7] PPC64: Don't fault at lwsync, Paul Brook, 2009/03/05
- Re: [Qemu-devel] [PATCH 7/7] PPC64: Don't fault at lwsync, Alexander Graf, 2009/03/05
- Re: [Qemu-devel] [PATCH 7/7] PPC64: Don't fault at lwsync, Alexander Graf, 2009/03/05
- Re: [Qemu-devel] [PATCH 7/7] PPC64: Don't fault at lwsync, Paul Brook, 2009/03/05
- Re: [Qemu-devel] [PATCH 7/7] PPC64: Don't fault at lwsync, Paul Brook, 2009/03/05
- Re: [Qemu-devel] [PATCH 7/7] PPC64: Don't fault at lwsync, Daniel Jacobowitz, 2009/03/05
- Re: [Qemu-devel] [PATCH 7/7] PPC64: Don't fault at lwsync,
Paul Brook <=
- Re: [Qemu-devel] [PATCH 7/7] PPC64: Don't fault at lwsync, Alexander Graf, 2009/03/05