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Re: [PATCH 2/2] microvm: add pcie support
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From: |
Gerd Hoffmann |
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Subject: |
Re: [PATCH 2/2] microvm: add pcie support |
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Date: |
Mon, 21 Sep 2020 13:33:47 +0200 |
On Fri, Sep 18, 2020 at 08:36:14AM -0400, Michael S. Tsirkin wrote:
> On Fri, Sep 18, 2020 at 02:19:11PM +0200, Gerd Hoffmann wrote:
> > Uses the existing gpex device which is also used as pcie host bridge on
> > arm/aarch64. For now only a 32bit mmio window and no ioport support.
> >
> > It is disabled by default, use "-machine microvm,pcie=on" to enable.
> > ACPI support must be enabled too because the bus is declared in the
> > DSDT table.
> >
> > Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
>
> Can we do the reverse and only support a 64 bit window?
> 32 bit resources are a pain, we support them on x86 for purposes
> of legacy guests ...
32bit pci bars too, right?
I suspect we can't that easily take away the 32bit window ...
take care,
Gerd