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| author |  Sean Christopherson <seanjc@google.com>
| 2021-08-27 11:25:10 +0200 |
|---|---|---|
| committer |  Paolo Bonzini <pbonzini@redhat.com>
| 2021-09-22 10:33:15 -0400 |
| commit | 0bbc2ca8515f9cdf11df84ccb63dc7c44bc3d8f4 (patch) | |
| tree | f28f7a59b2f13d18d3c9038dd82b6ad50b66e761 /init | |
| parent | KVM: Clean up benign vcpu->cpu data races when kicking vCPUs (diff) | |
| download | linux-0bbc2ca8515f9cdf11df84ccb63dc7c44bc3d8f4.tar.gz linux-0bbc2ca8515f9cdf11df84ccb63dc7c44bc3d8f4.tar.bz2 linux-0bbc2ca8515f9cdf11df84ccb63dc7c44bc3d8f4.zip | |
KVM: KVM: Use cpumask_available() to check for NULL cpumask when kicking vCPUs
Check for a NULL cpumask_var_t when kicking multiple vCPUs via
cpumask_available(), which performs a !NULL check if and only if cpumasks
are configured to be allocated off-stack. This is a meaningless
optimization, e.g. avoids a TEST+Jcc and TEST+CMOV on x86, but more
importantly helps document that the NULL check is necessary even though
all callers pass in a local variable.
No functional change intended.
Cc: Lai Jiangshan <jiangshanlai@gmail.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20210827092516.1027264-3-vkuznets@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'init')
0 files changed, 0 insertions, 0 deletions