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Re: [Qemu-devel] [PATCH] hw/pci: completed master-abort emulation
From: |
Michael S. Tsirkin |
Subject: |
Re: [Qemu-devel] [PATCH] hw/pci: completed master-abort emulation |
Date: |
Tue, 24 Sep 2013 11:58:45 +0300 |
corrected Anthony's mail.
On Tue, Sep 24, 2013 at 11:44:57AM +0300, Marcel Apfelbaum wrote:
> > Not necessarily. Another bridge can claim it then
> > terminate with MA.
> >
> > Example:
> >
> > -[0000:00]-+-00.0
> > +-02.0
> > +-16.0
> > +-16.3
> > +-19.0
> > +-1a.0
> > +-1b.0
> > +-1c.0-[02]--
> > +-1c.1-[03]----00.0
> > +-1c.3-[05-0c]--
> > +-1c.4-[0d]--+-00.0
> > | \-00.3
> >
> >
> >
> > Device 03:00.0 writes to within memory window of 00:1c.4,
> > but outside BARs of both 0d:00.0 and 0d:00.3.
> >
> > On PCI, I think MA is set in sec status register of 00:1c.4.
> You are right, my code will work only under the assumption
> that the devices do not communicate between them.
> I will state the above in the next version.
>
> Thanks,
> Marcel
How hard is it to fix properly?
If that's hard, would it be easier to implement express
semantics unconditionally?
- Re: [Qemu-devel] [PATCH] hw/pci: completed master-abort emulation, (continued)
- Re: [Qemu-devel] [PATCH] hw/pci: completed master-abort emulation, Michael S. Tsirkin, 2013/09/23
- Re: [Qemu-devel] [PATCH] hw/pci: completed master-abort emulation, Marcel Apfelbaum, 2013/09/23
- Re: [Qemu-devel] [PATCH] hw/pci: completed master-abort emulation, Michael S. Tsirkin, 2013/09/23
- Re: [Qemu-devel] [PATCH] hw/pci: completed master-abort emulation, Marcel Apfelbaum, 2013/09/23
- Re: [Qemu-devel] [PATCH] hw/pci: completed master-abort emulation, Michael S. Tsirkin, 2013/09/23
- Re: [Qemu-devel] [PATCH] hw/pci: completed master-abort emulation, Marcel Apfelbaum, 2013/09/23
- Re: [Qemu-devel] [PATCH] hw/pci: completed master-abort emulation, Michael S. Tsirkin, 2013/09/23
- Re: [Qemu-devel] [PATCH] hw/pci: completed master-abort emulation, Marcel Apfelbaum, 2013/09/24
- Re: [Qemu-devel] [PATCH] hw/pci: completed master-abort emulation, Michael S. Tsirkin, 2013/09/24
- Re: [Qemu-devel] [PATCH] hw/pci: completed master-abort emulation, Marcel Apfelbaum, 2013/09/24
- Re: [Qemu-devel] [PATCH] hw/pci: completed master-abort emulation,
Michael S. Tsirkin <=
- Re: [Qemu-devel] [PATCH] hw/pci: completed master-abort emulation, Marcel Apfelbaum, 2013/09/24
- Re: [Qemu-devel] [PATCH] hw/pci: completed master-abort emulation, Peter Maydell, 2013/09/24
- Re: [Qemu-devel] [PATCH] hw/pci: completed master-abort emulation, Marcel Apfelbaum, 2013/09/24
- Re: [Qemu-devel] [PATCH] hw/pci: completed master-abort emulation, Peter Maydell, 2013/09/24
- Re: [Qemu-devel] [PATCH] hw/pci: completed master-abort emulation, Marcel Apfelbaum, 2013/09/24
- Re: [Qemu-devel] [PATCH] hw/pci: completed master-abort emulation, Michael S. Tsirkin, 2013/09/24
- Re: [Qemu-devel] [PATCH] hw/pci: completed master-abort emulation, Michael S. Tsirkin, 2013/09/24
- Re: [Qemu-devel] [PATCH] hw/pci: completed master-abort emulation, Peter Maydell, 2013/09/24
- Re: [Qemu-devel] [PATCH] hw/pci: completed master-abort emulation, Michael S. Tsirkin, 2013/09/24