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Subject: Re: [virtio-comment] Re: [PATCH 09/11] transport-pci: Describe PCI MMR dev config registers
On Mon, Apr 10, 2023 at 09:33:32AM +0800, Jason Wang wrote: > This is fine for vDPA but not for virtio if the design can only work > for some specific setups (OSes/archs). > > Thanks Well virtio legacy has a long history of documenting existing hacks :) But yes, VIRTIO_F_ORDER_PLATFORM has to be documented. And we have to decide what to do about ACCESS_PLATFORM since there's a security problem if device allows not acking it. Two options: - relax the rules a bit and say device will assume ACCESS_PLATFORM is acked anyway - a new flag that is insecure (so useful for sec but useless for dpdk) but optional -- MST
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