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RE: [Qemu-devel] [PATCH 3/9] powerpc/kvm: Enable mpic for E500 platform
From: |
Hollis Blanchard |
Subject: |
RE: [Qemu-devel] [PATCH 3/9] powerpc/kvm: Enable mpic for E500 platform |
Date: |
Fri, 16 Jan 2009 12:17:40 -0600 |
On Fri, 2009-01-16 at 13:34 +0800, Liu Yu wrote:
>
> > -----Original Message-----
> > From: Anthony Liguori [mailto:address@hidden
> > Sent: Friday, January 16, 2009 5:23 AM
> > To: address@hidden
> > Cc: Liu Yu-B13201; address@hidden
> > Subject: Re: [Qemu-devel] [PATCH 3/9] powerpc/kvm: Enable
> > mpic for E500 platform
> >
> > Liu Yu wrote:
> > > The modify is based on original author's method
> > > to switch openpic and mpic by static define,
> > > like the switch between USE_INTEL_GW80314 and USE_MPCxxx.
> > > (Although the support for intel has broken)
> > > So they can't be used at the same time.
> > >
> > > I guess it's not the correct way to do this.
> > > but I am not sure is the USE_MPC85xx and openpic are still needed?
> > >
> >
> > Have you tested some of the other (TCG) boards (for instance,
> > with the
> > debian image Aurelien recently posted)?
> >
>
> You mean test powerpc mac99? No.
It doesn't sound like mac99 works right now anyways, so that may not be
possible to test.
> I only modified few places to the original code. I think it won't be
> influenced.
> But mpic and openpic couldnot work in the same qemu binary with this patch.
> If they should both be supported, then I need to modify more.
Due to the (artificial) "ppc" vs "ppcemb" split, I'm not sure this is a
requirement.
The only issue I can see is if there are "ppc" targets (e.g. 970) that
use the same[1] MPIC as found on e500, and that is different from and
not supported by the current OpenPIC emulation.
[1] By "same" I mean "substantially similar". As I understand it,
OpenPIC and MPIC are very similar designs, but there are different
bugs/quirks to different implementations. So even if e500's MPIC isn't
*exactly* the same as 970 chipsets' MPIC, if they're close enough that
the code could be shared, it should be.
--
Hollis Blanchard
IBM Linux Technology Center
- [Qemu-devel] RE: [PATCH 9/9] powerpc/kvm: Add MPC85xx board support, (continued)
- [Qemu-devel] RE: [PATCH 9/9] powerpc/kvm: Add MPC85xx board support, Hollis Blanchard, 2009/01/20
- [Qemu-devel] Re: [PATCH 7/9] powerpc/kvm: Add E500 core emulation, Hollis Blanchard, 2009/01/15
- [Qemu-devel] RE: [PATCH 7/9] powerpc/kvm: Add E500 core emulation, Liu Yu, 2009/01/16
- [Qemu-devel] RE: [PATCH 7/9] powerpc/kvm: Add E500 core emulation, Hollis Blanchard, 2009/01/16
- [Qemu-devel] RE: [PATCH 7/9] powerpc/kvm: Add E500 core emulation, Liu Yu, 2009/01/19
- [Qemu-devel] RE: [PATCH 7/9] powerpc/kvm: Add E500 core emulation, Liu Yu, 2009/01/19
- [Qemu-devel] Re: [PATCH 5/9] powerpc/kvm: Add freescale pci controller's support, Hollis Blanchard, 2009/01/15
- [Qemu-devel] RE: [PATCH 5/9] powerpc/kvm: Add freescale pci controller's support, Liu Yu, 2009/01/16
- Re: [Qemu-devel] [PATCH 3/9] powerpc/kvm: Enable mpic for E500 platform, Anthony Liguori, 2009/01/15
- RE: [Qemu-devel] [PATCH 3/9] powerpc/kvm: Enable mpic for E500 platform, Liu Yu, 2009/01/16
- RE: [Qemu-devel] [PATCH 3/9] powerpc/kvm: Enable mpic for E500 platform,
Hollis Blanchard <=
- Re: [Qemu-devel] [PATCH 3/9] powerpc/kvm: Enable mpic for E500 platform, Aurelien Jarno, 2009/01/16
[Qemu-devel] Re: [PATCH 0/9] powerpc/kvm: Add MPC85xx platform support, Hollis Blanchard, 2009/01/15
Re: [Qemu-devel] [PATCH 0/9] powerpc/kvm: Add MPC85xx platform support, Anthony Liguori, 2009/01/15