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Subject: RE: [virtio-comment] Re: [virtio-dev] [PATCH 08/11] transport-pci: Introduce virtio extended capability
> From: virtio-comment@lists.oasis-open.org <virtio-comment@lists.oasis- > open.org> On Behalf Of Michael S. Tsirkin > > > > > > now, imagine someone building a new device. if existing drivers are > > > not a concern, it is possible to move capabilities all to extended > > > space. is that possible while keeping the bios working? > > > > > unlikely as bios is looking in the legacy section. > > what do you mean by the legacy section? > Existing virtio PCI capabilities which are in the PCI capabilities region in first 256 bytes of the PCI config space. > > New capabilities like legacy (and pasid) has no backward compat > > requirement from bios and drivers. > > so they can start from new. > > sure.
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