diff mbox series

[v12,22/84] KVM: nVMX: Drop pointless msr_bitmap_map field from struct nested_vmx

Message ID 20240726235234.228822-23-seanjc@google.com (mailing list archive)
State Handled Elsewhere, archived
Headers show
Series KVM: Stop grabbing references to PFNMAP'd pages | expand

Checks

Context Check Description
conchuod/vmtest-fixes-PR fail merge-conflict
conchuod/vmtest-for-next-PR fail PR summary
conchuod/patch-22-test-1 success .github/scripts/patches/tests/build_rv32_defconfig.sh
conchuod/patch-22-test-2 success .github/scripts/patches/tests/build_rv64_clang_allmodconfig.sh
conchuod/patch-22-test-3 success .github/scripts/patches/tests/build_rv64_gcc_allmodconfig.sh
conchuod/patch-22-test-4 success .github/scripts/patches/tests/build_rv64_nommu_k210_defconfig.sh
conchuod/patch-22-test-5 success .github/scripts/patches/tests/build_rv64_nommu_virt_defconfig.sh
conchuod/patch-22-test-6 success .github/scripts/patches/tests/checkpatch.sh
conchuod/patch-22-test-7 success .github/scripts/patches/tests/dtb_warn_rv64.sh
conchuod/patch-22-test-8 success .github/scripts/patches/tests/header_inline.sh
conchuod/patch-22-test-9 success .github/scripts/patches/tests/kdoc.sh
conchuod/patch-22-test-10 success .github/scripts/patches/tests/module_param.sh
conchuod/patch-22-test-11 success .github/scripts/patches/tests/verify_fixes.sh
conchuod/patch-22-test-12 success .github/scripts/patches/tests/verify_signedoff.sh

Commit Message

Sean Christopherson July 26, 2024, 11:51 p.m. UTC 
Remove vcpu_vmx.msr_bitmap_map and instead use an on-stack structure in
the one function that uses the map, nested_vmx_prepare_msr_bitmap().

Signed-off-by: Sean Christopherson <seanjc@google.com>
---
 arch/x86/kvm/vmx/nested.c | 8 ++++----
 arch/x86/kvm/vmx/vmx.h    | 2 --
 2 files changed, 4 insertions(+), 6 deletions(-)
diff mbox series

Patch

diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c
index a34b49ea64b5..372d005e09e7 100644
--- a/arch/x86/kvm/vmx/nested.c
+++ b/arch/x86/kvm/vmx/nested.c
@@ -621,7 +621,7 @@  static inline bool nested_vmx_prepare_msr_bitmap(struct kvm_vcpu *vcpu,
 	int msr;
 	unsigned long *msr_bitmap_l1;
 	unsigned long *msr_bitmap_l0 = vmx->nested.vmcs02.msr_bitmap;
-	struct kvm_host_map *map = &vmx->nested.msr_bitmap_map;
+	struct kvm_host_map msr_bitmap_map;
 
 	/* Nothing to do if the MSR bitmap is not in use.  */
 	if (!cpu_has_vmx_msr_bitmap() ||
@@ -644,10 +644,10 @@  static inline bool nested_vmx_prepare_msr_bitmap(struct kvm_vcpu *vcpu,
 			return true;
 	}
 
-	if (kvm_vcpu_map(vcpu, gpa_to_gfn(vmcs12->msr_bitmap), map))
+	if (kvm_vcpu_map(vcpu, gpa_to_gfn(vmcs12->msr_bitmap), &msr_bitmap_map))
 		return false;
 
-	msr_bitmap_l1 = (unsigned long *)map->hva;
+	msr_bitmap_l1 = (unsigned long *)msr_bitmap_map.hva;
 
 	/*
 	 * To keep the control flow simple, pay eight 8-byte writes (sixteen
@@ -711,7 +711,7 @@  static inline bool nested_vmx_prepare_msr_bitmap(struct kvm_vcpu *vcpu,
 	nested_vmx_set_intercept_for_msr(vmx, msr_bitmap_l1, msr_bitmap_l0,
 					 MSR_IA32_FLUSH_CMD, MSR_TYPE_W);
 
-	kvm_vcpu_unmap(vcpu, &vmx->nested.msr_bitmap_map, false);
+	kvm_vcpu_unmap(vcpu, &msr_bitmap_map, false);
 
 	vmx->nested.force_msr_bitmap_recalc = false;
 
diff --git a/arch/x86/kvm/vmx/vmx.h b/arch/x86/kvm/vmx/vmx.h
index 42498fa63abb..889c6c42ee27 100644
--- a/arch/x86/kvm/vmx/vmx.h
+++ b/arch/x86/kvm/vmx/vmx.h
@@ -204,8 +204,6 @@  struct nested_vmx {
 	struct kvm_host_map virtual_apic_map;
 	struct kvm_host_map pi_desc_map;
 
-	struct kvm_host_map msr_bitmap_map;
-
 	struct pi_desc *pi_desc;
 	bool pi_pending;
 	u16 posted_intr_nv;