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KVM: x86/mmu: Clean up make_huge_page_split_spte() definition and intro

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Tweak the definition of make_huge_page_split_spte() to eliminate an
unnecessarily long line, and opportunistically initialize child_spte to
make it more obvious that the child is directly derived from the huge
parent.

No functional change intended.

Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-ID: <20240712151335.1242633-3-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Sean Christopherson
2024-07-12 08:13:35 -07:00
committed by Paolo Bonzini
parent 3d4415ed75
commit 9fe17d2ada
1 changed files with 3 additions and 5 deletions
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8
arch/x86/kvm/mmu/spte.c
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@@ -291,15 +291,13 @@ static u64 make_spte_executable(u64 spte)
* This is used during huge page splitting to build the SPTEs that make up the
* new page table.
*/
u64 make_huge_page_split_spte(struct kvm *kvm, u64 huge_spte, union kvm_mmu_page_role role,
int index)
u64 make_huge_page_split_spte(struct kvm *kvm, u64 huge_spte,
union kvm_mmu_page_role role, int index)
{
u64 child_spte;
u64 child_spte = huge_spte;
KVM_BUG_ON(!is_shadow_present_pte(huge_spte) || !is_large_pte(huge_spte), kvm);
child_spte = huge_spte;
/*
* The child_spte already has the base address of the huge page being
* split. So we just have to OR in the offset to the page at the next