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Diffstat (limited to 'cl-os.tex')
| -rw-r--r-- | cl-os.tex | 20 |
1 files changed, 20 insertions, 0 deletions
@@ -99,6 +99,26 @@ of a Virtio Device / Virtqueues / The Virtqueue Used Ring} and Virtqueue Used Ring}. } \\ \hline +508 & 22 Apr 2015 & Michael Tsirkin & {VIRTIO-139: +pci: missing documentation for dealing with 64 bit config fields + +pci spec says what width access to use for 32, 16 and 8 +bit fields, but does not explicitly say what to do for +32 bit fields. As we have text that says driver must +treat 64 bit accesses as non-atomic, this seems +to imply driver should always do two 32 bit wide accesses. + +Let's make this an explicit requirement, and require +devices to support this. + +See \ref{sec:Virtio Transport Options / Virtio Over PCI Bus / PCI +Device Layout}, \ref{drivernormative:Virtio Transport Options / +Virtio Over PCI Bus / PCI Device Layout}, +\ref{devicenormative:Virtio Transport Options / Virtio Over PCI +Bus / PCI Device Layout} and \ref{sec:Conformance / Driver +Conformance / PCI Driver Conformance}. + } \\ +\hline 510 & 22 Apr 2015 & Michael Tsirkin & {conformance: add VIRTIO-137 statement links |