KVM: x86: Add a helper to get the sparse VP_SET for IPIs and TLB flushes

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Add a helper, kvm_get_sparse_vp_set(), to handle sanity checks related to
the VARHEAD field and reading the sparse banks of a VP_SET.  A future
commit to reduce the memory footprint of sparse_banks will introduce more
common code to the sparse bank retrieval.

No functional change intended.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Message-Id: <20211207220926.718794-5-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Sean Christopherson 2021-12-07 22:09:22 +00:00 • committed by Paolo Bonzini

parent 25af908118

commit a0dd008fe9

1 changed files with 16 additions and 16 deletions

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arch/x86/kvm/hyperv.c

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