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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 13:09:26 +0300 |
On Wed, Jun 25, 2014 at 11:59:21AM +0200, Paolo Bonzini wrote:
> Il 25/06/2014 11:55, Michael S. Tsirkin ha scritto:
> >> 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?
> >
> >If you just want to pass a couple of IDs, then don't, it's a waste.
> >But I still don't know what problem you are trying to solve,
> >looking at guest driver did not help.
>
> It's not just a couple of IDs, it's also random fields of the MCH
> configuration space. Grep drivers/gpu/drm/i915 for bridge_dev.
>
> Paolo
I did, it seems to look for device at 0,0:
static int i915_get_bridge_dev(struct drm_device *dev)
{
struct drm_i915_private *dev_priv = dev->dev_private;
dev_priv->bridge_dev = pci_get_bus_and_slot(0, PCI_DEVFN(0, 0));
if (!dev_priv->bridge_dev) {
DRM_ERROR("bridge device not found\n");
return -1;
}
return 0;
}
are you sure this is the ISA bridge device? these patches put it at 1f.
- 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, 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, 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, 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,
Michael S. Tsirkin <=
- 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, Michael S. Tsirkin, 2014/06/25
- Re: [Qemu-devel] [v5][PATCH 0/5] xen: add Intel IGD passthrough support, Michael S. Tsirkin, 2014/06/25