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    SubjectRe: [PATCH v4 03/17] arm64: kvm: stop treating register x18 as caller save
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    Hi Sami,

    On 2019-11-01 23:20, Sami Tolvanen wrote:
    > From: Ard Biesheuvel <ard.biesheuvel@linaro.org>
    >
    > In preparation of reserving x18, stop treating it as caller save in
    > the KVM guest entry/exit code. Currently, the code assumes there is
    > no need to preserve it for the host, given that it would have been
    > assumed clobbered anyway by the function call to __guest_enter().
    > Instead, preserve its value and restore it upon return.
    >
    > Link: https://patchwork.kernel.org/patch/9836891/
    > Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
    > [Sami: updated commit message, switched from x18 to x29 for the guest
    > context]
    > Signed-off-by: Sami Tolvanen <samitolvanen@google.com>
    > Reviewed-by: Kees Cook <keescook@chromium.org>

    If you intend for this to be merged via the arm64 tree, please add my

    Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>

    Thanks,

    M.
    --
    Jazz is not dead. It just smells funny...

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