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Re: [Qemu-devel] [v5][PATCH 0/5] xen: add Intel IGD passthrough support
From: |
Michael S. Tsirkin |
Subject: |
Re: [Qemu-devel] [v5][PATCH 0/5] xen: add Intel IGD passthrough support |
Date: |
Wed, 25 Jun 2014 13:00:50 +0300 |
On Wed, Jun 25, 2014 at 11:54:22AM +0200, Paolo Bonzini wrote:
> Il 25/06/2014 11:50, Chen, Tiejun ha scritto:
> >>
> >>For past devices, we know which BARs they use. For future devices, it
> >>would be nice if the PCH/MCH backdoor was specified so that we know they
> >>will leave a free BAR for virtualization.
> >>
> >
> >Now I'm a bit confused about BAR here.
> >
> >You're saying we will reserve a free BAR to address those information to
> >expose to guest, but which device does this free BAR belong to? The
> >video device? Or PCH/MCH?
>
> The video device. If the host device does not have the BAR (which will be
> the common case), QEMU can emulate it like this:
>
> - offsets 0x0000..0x0fff map to configuration space of the host MCH
>
> - offsets 0x1000..0x1fff map to configuration space of the host PCH
>
> Of course this is only limited to offsets that are needed by the driver.
>
> Paolo
Ow.
If you need hacks like this, describe this in ACPI.
But I really hope not.
--
MST
- Re: [Qemu-devel] [v5][PATCH 0/5] xen: add Intel IGD passthrough support, (continued)
- Re: [Qemu-devel] [v5][PATCH 0/5] xen: add Intel IGD passthrough support, Paolo Bonzini, 2014/06/25
- Re: [Qemu-devel] [v5][PATCH 0/5] xen: add Intel IGD passthrough support, Michael S. Tsirkin, 2014/06/25
- Re: [Qemu-devel] [v5][PATCH 0/5] xen: add Intel IGD passthrough support, Paolo Bonzini, 2014/06/25
- Re: [Qemu-devel] [v5][PATCH 0/5] xen: add Intel IGD passthrough support, Michael S. Tsirkin, 2014/06/25
- Re: [Qemu-devel] [v5][PATCH 0/5] xen: add Intel IGD passthrough support, Chen, Tiejun, 2014/06/25
- Re: [Qemu-devel] [v5][PATCH 0/5] xen: add Intel IGD passthrough support, Michael S. Tsirkin, 2014/06/25
- Re: [Qemu-devel] [v5][PATCH 0/5] xen: add Intel IGD passthrough support, Chen, Tiejun, 2014/06/25
- Re: [Qemu-devel] [v5][PATCH 0/5] xen: add Intel IGD passthrough support, Paolo Bonzini, 2014/06/25
- Re: [Qemu-devel] [v5][PATCH 0/5] xen: add Intel IGD passthrough support, Chen, Tiejun, 2014/06/25
- Re: [Qemu-devel] [v5][PATCH 0/5] xen: add Intel IGD passthrough support, Paolo Bonzini, 2014/06/25
- Re: [Qemu-devel] [v5][PATCH 0/5] xen: add Intel IGD passthrough support,
Michael S. Tsirkin <=
- Re: [Qemu-devel] [v5][PATCH 0/5] xen: add Intel IGD passthrough support, Chen, Tiejun, 2014/06/26
- Re: [Qemu-devel] [v5][PATCH 0/5] xen: add Intel IGD passthrough support, Paolo Bonzini, 2014/06/26
- Re: [Qemu-devel] [v5][PATCH 0/5] xen: add Intel IGD passthrough support, Michael S. Tsirkin, 2014/06/26
- Re: [Qemu-devel] [v5][PATCH 0/5] xen: add Intel IGD passthrough support, Paolo Bonzini, 2014/06/26
- Re: [Qemu-devel] [v5][PATCH 0/5] xen: add Intel IGD passthrough support, Michael S. Tsirkin, 2014/06/26
- Re: [Qemu-devel] [v5][PATCH 0/5] xen: add Intel IGD passthrough support, Paolo Bonzini, 2014/06/26
- Re: [Qemu-devel] [v5][PATCH 0/5] xen: add Intel IGD passthrough support, Michael S. Tsirkin, 2014/06/26
- Re: [Qemu-devel] [v5][PATCH 0/5] xen: add Intel IGD passthrough support, Chen, Tiejun, 2014/06/29
- Re: [Qemu-devel] [v5][PATCH 0/5] xen: add Intel IGD passthrough support, Michael S. Tsirkin, 2014/06/30
- Re: [Qemu-devel] [v5][PATCH 0/5] xen: add Intel IGD passthrough support, Chen, Tiejun, 2014/06/30