KVM: x86/mmu: Add a helper to consolidate root sp allocation

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Add a helper, mmu_alloc_root(), to consolidate the allocation of a root
shadow page, which has the same basic mechanics for all flavors of TDP
and shadow paging.

Note, __pa(sp->spt) doesn't need to be protected by mmu_lock, sp->spt
points at a kernel page.

No functional change intended.

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Message-Id: <20200428023714.31923-1-sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

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Sean Christopherson 2020-04-27 19:37:14 -07:00 • committed by Paolo Bonzini

parent 3bae0459bc

commit 8123f26524

1 changed files with 39 additions and 49 deletions

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arch/x86/kvm/mmu/mmu.c

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