[PATCH 21/54] KVM: x86/mmu: Consolidate misc updates into shadow_mmu_init_context()

From: Sean Christopherson
Date: Tue Jun 22 2021 - 14:00:06 EST


Consolidate the MMU metadata update calls to deduplicate code, and to
prep for future cleanup.

No functional change intended.

Signed-off-by: Sean Christopherson <seanjc@xxxxxxxxxx>
---
arch/x86/kvm/mmu/mmu.c | 17 ++++++-----------
1 file changed, 6 insertions(+), 11 deletions(-)

diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index 3616c3b7618e..241408e6576d 100644
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -4507,11 +4507,6 @@ static void paging64_init_context_common(struct kvm_vcpu *vcpu,
context->nx = is_nx(vcpu);
context->root_level = root_level;

- reset_rsvds_bits_mask(vcpu, context);
- update_permission_bitmask(vcpu, context, false);
- update_pkru_bitmask(vcpu, context, false);
- update_last_nonleaf_level(vcpu, context);
-
MMU_WARN_ON(!is_pae(vcpu));
context->page_fault = paging64_page_fault;
context->gva_to_gpa = paging64_gva_to_gpa;
@@ -4534,12 +4529,6 @@ static void paging32_init_context(struct kvm_vcpu *vcpu,
{
context->nx = false;
context->root_level = PT32_ROOT_LEVEL;
-
- reset_rsvds_bits_mask(vcpu, context);
- update_permission_bitmask(vcpu, context, false);
- update_pkru_bitmask(vcpu, context, false);
- update_last_nonleaf_level(vcpu, context);
-
context->page_fault = paging32_page_fault;
context->gva_to_gpa = paging32_gva_to_gpa;
context->sync_page = paging32_sync_page;
@@ -4703,6 +4692,12 @@ static void shadow_mmu_init_context(struct kvm_vcpu *vcpu, struct kvm_mmu *conte
else
paging32_init_context(vcpu, context);

+ if (____is_cr0_pg(regs)) {
+ reset_rsvds_bits_mask(vcpu, context);
+ update_permission_bitmask(vcpu, context, false);
+ update_pkru_bitmask(vcpu, context, false);
+ update_last_nonleaf_level(vcpu, context);
+ }
context->shadow_root_level = new_role.base.level;

context->mmu_role.as_u64 = new_role.as_u64;
--
2.32.0.288.g62a8d224e6-goog