Don't waste time writing zeros via VMWRITE during vCPU RESET, the VMCS
is zero allocated.
No functional change intended.
Signed-off-by: Sean Christopherson <seanjc@xxxxxxxxxx>
---
arch/x86/kvm/vmx/vmx.c | 29 -----------------------------
1 file changed, 29 deletions(-)
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 78d17adce7e6..74258ba4832a 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -4427,13 +4427,6 @@ static void init_vmcs(struct vcpu_vmx *vmx)
}
if (kvm_vcpu_apicv_active(&vmx->vcpu)) {
- vmcs_write64(EOI_EXIT_BITMAP0, 0);
- vmcs_write64(EOI_EXIT_BITMAP1, 0);
- vmcs_write64(EOI_EXIT_BITMAP2, 0);
- vmcs_write64(EOI_EXIT_BITMAP3, 0);
-
- vmcs_write16(GUEST_INTR_STATUS, 0);
-
vmcs_write16(POSTED_INTR_NV, POSTED_INTR_VECTOR);
vmcs_write64(POSTED_INTR_DESC_ADDR, __pa((&vmx->pi_desc)));
}
@@ -4444,23 +4437,9 @@ static void init_vmcs(struct vcpu_vmx *vmx)
vmx->ple_window_dirty = true;
}
- vmcs_write32(PAGE_FAULT_ERROR_CODE_MASK, 0);
- vmcs_write32(PAGE_FAULT_ERROR_CODE_MATCH, 0);
- vmcs_write32(CR3_TARGET_COUNT, 0); /* 22.2.1 */
-
- vmcs_write16(HOST_FS_SELECTOR, 0); /* 22.2.4 */
- vmcs_write16(HOST_GS_SELECTOR, 0); /* 22.2.4 */
vmx_set_constant_host_state(vmx);
- vmcs_writel(HOST_FS_BASE, 0); /* 22.2.4 */
- vmcs_writel(HOST_GS_BASE, 0); /* 22.2.4 */
- if (cpu_has_vmx_vmfunc())
- vmcs_write64(VM_FUNCTION_CONTROL, 0);
-
- vmcs_write32(VM_EXIT_MSR_STORE_COUNT, 0);
- vmcs_write32(VM_EXIT_MSR_LOAD_COUNT, 0);
vmcs_write64(VM_EXIT_MSR_LOAD_ADDR, __pa(vmx->msr_autoload.host.val));
- vmcs_write32(VM_ENTRY_MSR_LOAD_COUNT, 0);
vmcs_write64(VM_ENTRY_MSR_LOAD_ADDR, __pa(vmx->msr_autoload.guest.val));
if (vmcs_config.vmentry_ctrl & VM_ENTRY_LOAD_IA32_PAT)
@@ -4493,7 +4472,6 @@ static void init_vmcs(struct vcpu_vmx *vmx)
memset(&vmx->pt_desc, 0, sizeof(vmx->pt_desc));
/* Bit[6~0] are forced to 1, writes are ignored. */
vmx->pt_desc.guest.output_mask = 0x7F;
- vmcs_write64(GUEST_IA32_RTIT_CTL, 0);
}
vmx_setup_uret_msrs(vmx);
@@ -4536,13 +4514,6 @@ static void vmx_vcpu_reset(struct kvm_vcpu *vcpu, bool init_event)
vmcs_write32(GUEST_LDTR_LIMIT, 0xffff);
vmcs_write32(GUEST_LDTR_AR_BYTES, 0x00082);
- if (!init_event) {
- vmcs_write32(GUEST_SYSENTER_CS, 0);
- vmcs_writel(GUEST_SYSENTER_ESP, 0);
- vmcs_writel(GUEST_SYSENTER_EIP, 0);
- vmcs_write64(GUEST_IA32_DEBUGCTL, 0);
- }
-
vmcs_writel(GUEST_GDTR_BASE, 0);
vmcs_write32(GUEST_GDTR_LIMIT, 0xffff);
--
2.31.1.498.g6c1eba8ee3d-goog
