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    SubjectRe: [PATCH RFC 11/14] arm64: Move the ASID allocator code in a separate file
    On Fri, Sep 20, 2019 at 08:07:38AM +0800, Guo Ren wrote:
    > On Thu, Sep 19, 2019 at 11:18 PM Jean-Philippe Brucker
    > <jean-philippe@linaro.org> wrote:
    >
    > >
    > > The SMMU does support PCI Virtual Function - an hypervisor can assign a
    > > VF to a guest, and let that guest partition the VF into smaller contexts
    > > by using PASID. What it can't support is assigning partitions of a PCI
    > > function (VF or PF) to multiple Virtual Machines, since there is a
    > > single S2 PGD per function (in the Stream Table Entry), rather than one
    > > S2 PGD per PASID context.
    > >
    > In my concept, the two sentences "The SMMU does support PCI Virtual
    > Functio" v.s. "What it can't support is assigning partitions of a PCI
    > function (VF or PF) to multiple Virtual Machines" are conflict and I
    > don't want to play naming game :)

    That's fine. But to prevent the spread of misinformation: Arm SMMU
    supports PCI Virtual Functions.

    Thanks,
    Jean

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