KVM: x86/pmu: Remove redundant check for MSR_IA32_DS_AREA set handler

Browse source

After commit 2de154f541 ("KVM: x86/pmu: Provide "error" semantics
for unsupported-but-known PMU MSRs"), the guest_cpuid_has(DS) check
is not necessary any more since if the guest supports X86_FEATURE_DS,
it never returns 1. And if the guest does not support this feature,
the set_msr handler will get false from kvm_pmu_is_valid_msr() before
reaching this point. Therefore, the check will not be true in all cases
and can be safely removed, which also simplifies the code and improves
its readability.

Signed-off-by: Jinrong Liang <cloudliang@tencent.com>
Link: https://lore.kernel.org/r/20230411130338.8592-1-cloudliang@tencent.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

...

This commit is contained in:

Jinrong Liang 2023-04-11 21:03:38 +08:00 • committed by Sean Christopherson

parent 023cfa6fc2

commit 33ab767c26

1 changed files with 0 additions and 2 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

2

arch/x86/kvm/vmx/pmu_intel.c

View file