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    SubjectRe: [PATCH v2 5/8] KVM: x86: Reduce the number of emulator GPRs to '8' for 32-bit KVM
    On Thu, May 26, 2022 at 09:08:14PM +0000, Sean Christopherson wrote:
    > Reduce the number of GPRs emulated by 32-bit KVM from 16 to 8. KVM does
    > not support emulating 64-bit mode on 32-bit host kernels, and so should
    > never generate accesses to R8-15.
    >
    > Opportunistically use NR_EMULATOR_GPRS in rsm_load_state_{32,64}() now
    > that it is precise and accurate for both flavors.
    >
    > Wrap the definition with full #ifdef ugliness; sadly, IS_ENABLED()
    > doesn't guarantee a compile-time constant as far as BUILD_BUG_ON() is
    > concerned.
    >
    > Signed-off-by: Sean Christopherson <seanjc@google.com>

    Reviewed-by: Kees Cook <keescook@chromium.org>

    --
    Kees Cook

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