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    SubjectRe: [PATCH v2 2/4] x86/vmware: Add a header file for hypercall definitions
    On Fri, Aug 23, 2019 at 10:13:14AM +0200, Thomas Hellström (VMware) wrote:
    > From: Thomas Hellstrom <thellstrom@vmware.com>
    >
    > The new header is intended to be used by drivers using the backdoor.
    > Follow the kvm example using alternatives self-patching to
    > choose between vmcall, vmmcall and io instructions.
    >
    > Also define two new CPU feature flags to indicate hypervisor support
    > for vmcall- and vmmcall instructions.

    I could use some of the explanation why we need two feature flags added
    here from:

    https://lkml.kernel.org/r/970d2bb6-ab29-315f-f5d8-5d11095859af@shipmail.org

    Thx.

    --
    Regards/Gruss,
    Boris.

    Good mailing practices for 400: avoid top-posting and trim the reply.

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