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Re: [PATCH v3 1/2] spapr: Disable legacy virtio devices for pseries-5.0
From: |
Michael S. Tsirkin |
Subject: |
Re: [PATCH v3 1/2] spapr: Disable legacy virtio devices for pseries-5.0 and later |
Date: |
Wed, 11 Mar 2020 03:11:16 -0400 |
On Wed, Mar 11, 2020 at 11:58:57AM +1100, David Gibson wrote:
> Note that several things that I believe are now in the PCIe spec, but
> really derive more from PC legacy considerations, don't apply at all
> for PAPR. e.g. there's no meaningful distinction between integrated
> and slotted devices, multiple independent host bridges is routine and
> doesn't require any (virtual) hardware visible domain numbers.
Domain numbers are a Linux thing, not a PCIe thing. On x86 they come
from ACPI segment numbers. As such they aren't usually hardware
visible on x86, they are supplied by firmware.
--
MST
- Re: [PATCH v3 2/2] spapr: Enable virtio iommu_platform=on by default, (continued)
[PATCH v3 1/2] spapr: Disable legacy virtio devices for pseries-5.0 and later, David Gibson, 2020/03/04
Re: [PATCH v3 1/2] spapr: Disable legacy virtio devices for pseries-5.0 and later, Daniel P . Berrangé, 2020/03/10
Upstream QEMU guest support policy ? Re: [PATCH v3 0/2] spapr: Use vIOMMU translation for virtio by default, Daniel P . Berrangé, 2020/03/10
Re: Upstream QEMU guest support policy ? Re: [PATCH v3 0/2] spapr: Use vIOMMU translation for virtio by default, Daniel P . Berrangé, 2020/03/11
Re: Upstream QEMU guest support policy ? Re: [PATCH v3 0/2] spapr: Use vIOMMU translation for virtio by default, Michael S. Tsirkin, 2020/03/11