Re: [PATCH 2/3] KVM: x86: Use explicit case-statements for MCx banks in {g,s}et_msr_mce()

From: Jim Mattson
Date: Thu May 12 2022 - 19:23:21 EST


On Thu, May 12, 2022 at 3:27 PM Sean Christopherson <seanjc@xxxxxxxxxx> wrote:
>
> Use an explicit case statement to grab the full range of MCx bank MSRs
> in {g,s}et_msr_mce(), and manually check only the "end" (the number of
> banks configured by userspace may be less than the max). The "default"
> trick works, but is a bit odd now, and will be quite odd if/when support
> for accessing MCx_CTL2 MSRs is added, which has near identical logic.
>
> Hoist "offset" to function scope so as to avoid curly braces for the case
> statement, and because MCx_CTL2 support will need the same variables.
>
> Opportunstically clean up the comment about allowing bit 10 to be cleared
> from bank 4.
>
> No functional change intended.
>
> Cc: Jue Wang <juew@xxxxxxxxxx>
> Signed-off-by: Sean Christopherson <seanjc@xxxxxxxxxx>
> ---
Reviewed-by: Jim Mattson <jmattson@xxxxxxxxxx>