KVM: x86: Use explicit case-statements for MCx banks in {g,s}et_msr_mce()

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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@google.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Reviewed-by: Jim Mattson <jmattson@google.com>
Link: https://lore.kernel.org/r/20220512222716.4112548-3-seanjc@google.com

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This commit is contained in:

Sean Christopherson 2022-05-12 22:27:15 +00:00

parent 2368048bf5

commit f5223a332f

1 changed files with 39 additions and 36 deletions

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arch/x86/kvm/x86.c

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