linux-kernel - [PATCH RFC v1 3/5] KVM: VMX: Define VMCS-to-EVMCS conversion for the new fields

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Message-Id: <20220615124915.3068295-4-vkuznets@redhat.com>
Date:   Wed, 15 Jun 2022 14:49:13 +0200
From:   Vitaly Kuznetsov <vkuznets@...hat.com>
To:     kvm@...r.kernel.org, Paolo Bonzini <pbonzini@...hat.com>,
        Anirudh Rayabharam <anrayabh@...ux.microsoft.com>
Cc:     Sean Christopherson <seanjc@...gle.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        linux-hyperv@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH RFC v1 3/5] KVM: VMX: Define VMCS-to-EVMCS conversion for the new fields

Enlightened VMCS v1 definition was updated with new fields, support
them in KVM by defining VMCS-to-EVMCS conversion.

Note: SSP, CET and Guest LBR features are not supported by KVM yet and
the corresponding fields are not defined in 'enum vmcs_field', leave
them commented out for now.

Signed-off-by: Vitaly Kuznetsov <vkuznets@...hat.com>
---
 arch/x86/kvm/vmx/evmcs.c | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/arch/x86/kvm/vmx/evmcs.c b/arch/x86/kvm/vmx/evmcs.c
index 6a61b1ae7942..8bea5dea0341 100644
--- a/arch/x86/kvm/vmx/evmcs.c
+++ b/arch/x86/kvm/vmx/evmcs.c
@@ -28,6 +28,8 @@ const struct evmcs_field vmcs_field_to_evmcs_1[] = {
 		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
 	EVMCS1_FIELD(HOST_IA32_EFER, host_ia32_efer,
 		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
+	EVMCS1_FIELD(HOST_IA32_PERF_GLOBAL_CTRL, host_ia32_perf_global_ctrl,
+		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
 	EVMCS1_FIELD(HOST_CR0, host_cr0,
 		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
 	EVMCS1_FIELD(HOST_CR3, host_cr3,
@@ -78,6 +80,8 @@ const struct evmcs_field vmcs_field_to_evmcs_1[] = {
 		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
 	EVMCS1_FIELD(GUEST_IA32_EFER, guest_ia32_efer,
 		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
+	EVMCS1_FIELD(GUEST_IA32_PERF_GLOBAL_CTRL, guest_ia32_perf_global_ctrl,
+		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
 	EVMCS1_FIELD(GUEST_PDPTR0, guest_pdptr0,
 		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
 	EVMCS1_FIELD(GUEST_PDPTR1, guest_pdptr1,
@@ -126,6 +130,28 @@ const struct evmcs_field vmcs_field_to_evmcs_1[] = {
 		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
 	EVMCS1_FIELD(XSS_EXIT_BITMAP, xss_exit_bitmap,
 		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_GRP2),
+	EVMCS1_FIELD(ENCLS_EXITING_BITMAP, encls_exiting_bitmap,
+		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_GRP2),
+	EVMCS1_FIELD(TSC_MULTIPLIER, tsc_multiplier,
+		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_GRP2),
+	/*
+	 * Not used by KVM:
+	 *
+	 * EVMCS1_FIELD(0x00006828, guest_ia32_s_cet,
+	 *	     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
+	 * EVMCS1_FIELD(0x0000682A, guest_ssp,
+	 *	     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_BASIC),
+	 * EVMCS1_FIELD(0x0000682C, guest_ia32_int_ssp_table_addr,
+	 *	     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
+	 * EVMCS1_FIELD(0x00002816, guest_ia32_lbr_ctl,
+	 *	     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),
+	 * EVMCS1_FIELD(0x00006C18, host_ia32_s_cet,
+	 *	     HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
+	 * EVMCS1_FIELD(0x00006C1A, host_ssp,
+	 *	     HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
+	 * EVMCS1_FIELD(0x00006C1C, host_ia32_int_ssp_table_addr,
+	 *	     HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),
+	 */
 
 	/* 64 bit read only */
 	EVMCS1_FIELD(GUEST_PHYSICAL_ADDRESS, guest_physical_address,
-- 
2.35.3