Commit 75edce8a authored by Sean Christopherson's avatar Sean Christopherson Committed by Paolo Bonzini
Browse files

KVM: VMX: Move eVMCS code to dedicated files 



The header, evmcs.h, already exists and contains a fair amount of code,
but there are a few pieces in vmx.c that can be moved verbatim.  In
addition, move an array definition to evmcs.c to prepare for multiple
consumers of evmcs.h.

Signed-off-by: default avatarSean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: default avatarPaolo Bonzini <pbonzini@redhat.com>
parent 8373d25d

arch/x86/kvm/Makefile

+1 −1
Original line number Diff line number Diff line
@@ -16,7 +16,7 @@ kvm-y += x86.o mmu.o emulate.o i8259.o irq.o lapic.o \ 
			   i8254.o ioapic.o irq_comm.o cpuid.o pmu.o mtrr.o \

			   hyperv.o page_track.o debugfs.o



kvm-intel-y		+= vmx/vmx.o vmx/pmu_intel.o vmx/vmcs12.o

kvm-intel-y		+= vmx/vmx.o vmx/pmu_intel.o vmx/vmcs12.o vmx/evmcs.o

kvm-amd-y		+= svm.o pmu_amd.o



obj-$(CONFIG_KVM)	+= kvm.o

arch/x86/kvm/vmx/evmcs.c

0 → 100644
+343 −0
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0



#include <linux/errno.h>

#include <linux/smp.h>



#include "evmcs.h"

#include "vmcs.h"

#include "vmx.h"



DEFINE_STATIC_KEY_FALSE(enable_evmcs);



#if IS_ENABLED(CONFIG_HYPERV)



#define ROL16(val, n) ((u16)(((u16)(val) << (n)) | ((u16)(val) >> (16 - (n)))))

#define EVMCS1_OFFSET(x) offsetof(struct hv_enlightened_vmcs, x)

#define EVMCS1_FIELD(number, name, clean_field)[ROL16(number, 6)] = \

		{EVMCS1_OFFSET(name), clean_field}



const struct evmcs_field vmcs_field_to_evmcs_1[] = {

	/* 64 bit rw */

	EVMCS1_FIELD(GUEST_RIP, guest_rip,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE),

	EVMCS1_FIELD(GUEST_RSP, guest_rsp,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_BASIC),

	EVMCS1_FIELD(GUEST_RFLAGS, guest_rflags,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_BASIC),

	EVMCS1_FIELD(HOST_IA32_PAT, host_ia32_pat,

		     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_CR0, host_cr0,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),

	EVMCS1_FIELD(HOST_CR3, host_cr3,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),

	EVMCS1_FIELD(HOST_CR4, host_cr4,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),

	EVMCS1_FIELD(HOST_IA32_SYSENTER_ESP, host_ia32_sysenter_esp,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),

	EVMCS1_FIELD(HOST_IA32_SYSENTER_EIP, host_ia32_sysenter_eip,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),

	EVMCS1_FIELD(HOST_RIP, host_rip,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),

	EVMCS1_FIELD(IO_BITMAP_A, io_bitmap_a,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_IO_BITMAP),

	EVMCS1_FIELD(IO_BITMAP_B, io_bitmap_b,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_IO_BITMAP),

	EVMCS1_FIELD(MSR_BITMAP, msr_bitmap,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_MSR_BITMAP),

	EVMCS1_FIELD(GUEST_ES_BASE, guest_es_base,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),

	EVMCS1_FIELD(GUEST_CS_BASE, guest_cs_base,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),

	EVMCS1_FIELD(GUEST_SS_BASE, guest_ss_base,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),

	EVMCS1_FIELD(GUEST_DS_BASE, guest_ds_base,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),

	EVMCS1_FIELD(GUEST_FS_BASE, guest_fs_base,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),

	EVMCS1_FIELD(GUEST_GS_BASE, guest_gs_base,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),

	EVMCS1_FIELD(GUEST_LDTR_BASE, guest_ldtr_base,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),

	EVMCS1_FIELD(GUEST_TR_BASE, guest_tr_base,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),

	EVMCS1_FIELD(GUEST_GDTR_BASE, guest_gdtr_base,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),

	EVMCS1_FIELD(GUEST_IDTR_BASE, guest_idtr_base,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),

	EVMCS1_FIELD(TSC_OFFSET, tsc_offset,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_GRP2),

	EVMCS1_FIELD(VIRTUAL_APIC_PAGE_ADDR, virtual_apic_page_addr,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_GRP2),

	EVMCS1_FIELD(VMCS_LINK_POINTER, vmcs_link_pointer,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),

	EVMCS1_FIELD(GUEST_IA32_DEBUGCTL, guest_ia32_debugctl,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),

	EVMCS1_FIELD(GUEST_IA32_PAT, guest_ia32_pat,

		     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_PDPTR0, guest_pdptr0,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),

	EVMCS1_FIELD(GUEST_PDPTR1, guest_pdptr1,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),

	EVMCS1_FIELD(GUEST_PDPTR2, guest_pdptr2,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),

	EVMCS1_FIELD(GUEST_PDPTR3, guest_pdptr3,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),

	EVMCS1_FIELD(GUEST_PENDING_DBG_EXCEPTIONS, guest_pending_dbg_exceptions,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),

	EVMCS1_FIELD(GUEST_SYSENTER_ESP, guest_sysenter_esp,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),

	EVMCS1_FIELD(GUEST_SYSENTER_EIP, guest_sysenter_eip,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),

	EVMCS1_FIELD(CR0_GUEST_HOST_MASK, cr0_guest_host_mask,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_CRDR),

	EVMCS1_FIELD(CR4_GUEST_HOST_MASK, cr4_guest_host_mask,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_CRDR),

	EVMCS1_FIELD(CR0_READ_SHADOW, cr0_read_shadow,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_CRDR),

	EVMCS1_FIELD(CR4_READ_SHADOW, cr4_read_shadow,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_CRDR),

	EVMCS1_FIELD(GUEST_CR0, guest_cr0,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_CRDR),

	EVMCS1_FIELD(GUEST_CR3, guest_cr3,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_CRDR),

	EVMCS1_FIELD(GUEST_CR4, guest_cr4,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_CRDR),

	EVMCS1_FIELD(GUEST_DR7, guest_dr7,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_CRDR),

	EVMCS1_FIELD(HOST_FS_BASE, host_fs_base,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_POINTER),

	EVMCS1_FIELD(HOST_GS_BASE, host_gs_base,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_POINTER),

	EVMCS1_FIELD(HOST_TR_BASE, host_tr_base,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_POINTER),

	EVMCS1_FIELD(HOST_GDTR_BASE, host_gdtr_base,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_POINTER),

	EVMCS1_FIELD(HOST_IDTR_BASE, host_idtr_base,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_POINTER),

	EVMCS1_FIELD(HOST_RSP, host_rsp,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_POINTER),

	EVMCS1_FIELD(EPT_POINTER, ept_pointer,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_XLAT),

	EVMCS1_FIELD(GUEST_BNDCFGS, guest_bndcfgs,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),

	EVMCS1_FIELD(XSS_EXIT_BITMAP, xss_exit_bitmap,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_GRP2),



	/* 64 bit read only */

	EVMCS1_FIELD(GUEST_PHYSICAL_ADDRESS, guest_physical_address,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE),

	EVMCS1_FIELD(EXIT_QUALIFICATION, exit_qualification,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE),

	/*

	 * Not defined in KVM:

	 *

	 * EVMCS1_FIELD(0x00006402, exit_io_instruction_ecx,

	 *		HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE);

	 * EVMCS1_FIELD(0x00006404, exit_io_instruction_esi,

	 *		HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE);

	 * EVMCS1_FIELD(0x00006406, exit_io_instruction_esi,

	 *		HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE);

	 * EVMCS1_FIELD(0x00006408, exit_io_instruction_eip,

	 *		HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE);

	 */

	EVMCS1_FIELD(GUEST_LINEAR_ADDRESS, guest_linear_address,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE),



	/*

	 * No mask defined in the spec as Hyper-V doesn't currently support

	 * these. Future proof by resetting the whole clean field mask on

	 * access.

	 */

	EVMCS1_FIELD(VM_EXIT_MSR_STORE_ADDR, vm_exit_msr_store_addr,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL),

	EVMCS1_FIELD(VM_EXIT_MSR_LOAD_ADDR, vm_exit_msr_load_addr,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL),

	EVMCS1_FIELD(VM_ENTRY_MSR_LOAD_ADDR, vm_entry_msr_load_addr,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL),

	EVMCS1_FIELD(CR3_TARGET_VALUE0, cr3_target_value0,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL),

	EVMCS1_FIELD(CR3_TARGET_VALUE1, cr3_target_value1,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL),

	EVMCS1_FIELD(CR3_TARGET_VALUE2, cr3_target_value2,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL),

	EVMCS1_FIELD(CR3_TARGET_VALUE3, cr3_target_value3,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL),



	/* 32 bit rw */

	EVMCS1_FIELD(TPR_THRESHOLD, tpr_threshold,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE),

	EVMCS1_FIELD(GUEST_INTERRUPTIBILITY_INFO, guest_interruptibility_info,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_BASIC),

	EVMCS1_FIELD(CPU_BASED_VM_EXEC_CONTROL, cpu_based_vm_exec_control,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_PROC),

	EVMCS1_FIELD(EXCEPTION_BITMAP, exception_bitmap,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_EXCPN),

	EVMCS1_FIELD(VM_ENTRY_CONTROLS, vm_entry_controls,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_ENTRY),

	EVMCS1_FIELD(VM_ENTRY_INTR_INFO_FIELD, vm_entry_intr_info_field,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_EVENT),

	EVMCS1_FIELD(VM_ENTRY_EXCEPTION_ERROR_CODE,

		     vm_entry_exception_error_code,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_EVENT),

	EVMCS1_FIELD(VM_ENTRY_INSTRUCTION_LEN, vm_entry_instruction_len,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_EVENT),

	EVMCS1_FIELD(HOST_IA32_SYSENTER_CS, host_ia32_sysenter_cs,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),

	EVMCS1_FIELD(PIN_BASED_VM_EXEC_CONTROL, pin_based_vm_exec_control,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_GRP1),

	EVMCS1_FIELD(VM_EXIT_CONTROLS, vm_exit_controls,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_GRP1),

	EVMCS1_FIELD(SECONDARY_VM_EXEC_CONTROL, secondary_vm_exec_control,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_GRP1),

	EVMCS1_FIELD(GUEST_ES_LIMIT, guest_es_limit,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),

	EVMCS1_FIELD(GUEST_CS_LIMIT, guest_cs_limit,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),

	EVMCS1_FIELD(GUEST_SS_LIMIT, guest_ss_limit,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),

	EVMCS1_FIELD(GUEST_DS_LIMIT, guest_ds_limit,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),

	EVMCS1_FIELD(GUEST_FS_LIMIT, guest_fs_limit,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),

	EVMCS1_FIELD(GUEST_GS_LIMIT, guest_gs_limit,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),

	EVMCS1_FIELD(GUEST_LDTR_LIMIT, guest_ldtr_limit,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),

	EVMCS1_FIELD(GUEST_TR_LIMIT, guest_tr_limit,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),

	EVMCS1_FIELD(GUEST_GDTR_LIMIT, guest_gdtr_limit,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),

	EVMCS1_FIELD(GUEST_IDTR_LIMIT, guest_idtr_limit,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),

	EVMCS1_FIELD(GUEST_ES_AR_BYTES, guest_es_ar_bytes,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),

	EVMCS1_FIELD(GUEST_CS_AR_BYTES, guest_cs_ar_bytes,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),

	EVMCS1_FIELD(GUEST_SS_AR_BYTES, guest_ss_ar_bytes,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),

	EVMCS1_FIELD(GUEST_DS_AR_BYTES, guest_ds_ar_bytes,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),

	EVMCS1_FIELD(GUEST_FS_AR_BYTES, guest_fs_ar_bytes,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),

	EVMCS1_FIELD(GUEST_GS_AR_BYTES, guest_gs_ar_bytes,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),

	EVMCS1_FIELD(GUEST_LDTR_AR_BYTES, guest_ldtr_ar_bytes,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),

	EVMCS1_FIELD(GUEST_TR_AR_BYTES, guest_tr_ar_bytes,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),

	EVMCS1_FIELD(GUEST_ACTIVITY_STATE, guest_activity_state,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),

	EVMCS1_FIELD(GUEST_SYSENTER_CS, guest_sysenter_cs,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP1),



	/* 32 bit read only */

	EVMCS1_FIELD(VM_INSTRUCTION_ERROR, vm_instruction_error,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE),

	EVMCS1_FIELD(VM_EXIT_REASON, vm_exit_reason,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE),

	EVMCS1_FIELD(VM_EXIT_INTR_INFO, vm_exit_intr_info,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE),

	EVMCS1_FIELD(VM_EXIT_INTR_ERROR_CODE, vm_exit_intr_error_code,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE),

	EVMCS1_FIELD(IDT_VECTORING_INFO_FIELD, idt_vectoring_info_field,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE),

	EVMCS1_FIELD(IDT_VECTORING_ERROR_CODE, idt_vectoring_error_code,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE),

	EVMCS1_FIELD(VM_EXIT_INSTRUCTION_LEN, vm_exit_instruction_len,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE),

	EVMCS1_FIELD(VMX_INSTRUCTION_INFO, vmx_instruction_info,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_NONE),



	/* No mask defined in the spec (not used) */

	EVMCS1_FIELD(PAGE_FAULT_ERROR_CODE_MASK, page_fault_error_code_mask,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL),

	EVMCS1_FIELD(PAGE_FAULT_ERROR_CODE_MATCH, page_fault_error_code_match,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL),

	EVMCS1_FIELD(CR3_TARGET_COUNT, cr3_target_count,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL),

	EVMCS1_FIELD(VM_EXIT_MSR_STORE_COUNT, vm_exit_msr_store_count,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL),

	EVMCS1_FIELD(VM_EXIT_MSR_LOAD_COUNT, vm_exit_msr_load_count,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL),

	EVMCS1_FIELD(VM_ENTRY_MSR_LOAD_COUNT, vm_entry_msr_load_count,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_ALL),



	/* 16 bit rw */

	EVMCS1_FIELD(HOST_ES_SELECTOR, host_es_selector,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),

	EVMCS1_FIELD(HOST_CS_SELECTOR, host_cs_selector,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),

	EVMCS1_FIELD(HOST_SS_SELECTOR, host_ss_selector,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),

	EVMCS1_FIELD(HOST_DS_SELECTOR, host_ds_selector,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),

	EVMCS1_FIELD(HOST_FS_SELECTOR, host_fs_selector,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),

	EVMCS1_FIELD(HOST_GS_SELECTOR, host_gs_selector,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),

	EVMCS1_FIELD(HOST_TR_SELECTOR, host_tr_selector,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_HOST_GRP1),

	EVMCS1_FIELD(GUEST_ES_SELECTOR, guest_es_selector,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),

	EVMCS1_FIELD(GUEST_CS_SELECTOR, guest_cs_selector,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),

	EVMCS1_FIELD(GUEST_SS_SELECTOR, guest_ss_selector,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),

	EVMCS1_FIELD(GUEST_DS_SELECTOR, guest_ds_selector,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),

	EVMCS1_FIELD(GUEST_FS_SELECTOR, guest_fs_selector,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),

	EVMCS1_FIELD(GUEST_GS_SELECTOR, guest_gs_selector,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),

	EVMCS1_FIELD(GUEST_LDTR_SELECTOR, guest_ldtr_selector,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),

	EVMCS1_FIELD(GUEST_TR_SELECTOR, guest_tr_selector,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_GUEST_GRP2),

	EVMCS1_FIELD(VIRTUAL_PROCESSOR_ID, virtual_processor_id,

		     HV_VMX_ENLIGHTENED_CLEAN_FIELD_CONTROL_XLAT),

};

const unsigned int nr_evmcs_1_fields = ARRAY_SIZE(vmcs_field_to_evmcs_1);



void evmcs_sanitize_exec_ctrls(struct vmcs_config *vmcs_conf)

{

	vmcs_conf->pin_based_exec_ctrl &= ~EVMCS1_UNSUPPORTED_PINCTRL;

	vmcs_conf->cpu_based_2nd_exec_ctrl &= ~EVMCS1_UNSUPPORTED_2NDEXEC;



	vmcs_conf->vmexit_ctrl &= ~EVMCS1_UNSUPPORTED_VMEXIT_CTRL;

	vmcs_conf->vmentry_ctrl &= ~EVMCS1_UNSUPPORTED_VMENTRY_CTRL;



}

#endif



int nested_enable_evmcs(struct kvm_vcpu *vcpu,

			uint16_t *vmcs_version)

{

	struct vcpu_vmx *vmx = to_vmx(vcpu);



	/*

	 * vmcs_version represents the range of supported Enlightened VMCS

	 * versions: lower 8 bits is the minimal version, higher 8 bits is the

	 * maximum supported version. KVM supports versions from 1 to

	 * KVM_EVMCS_VERSION.

	 */

	if (vmcs_version)

		*vmcs_version = (KVM_EVMCS_VERSION << 8) | 1;



	/* We don't support disabling the feature for simplicity. */

	if (vmx->nested.enlightened_vmcs_enabled)

		return 0;



	vmx->nested.enlightened_vmcs_enabled = true;



	vmx->nested.msrs.pinbased_ctls_high &= ~EVMCS1_UNSUPPORTED_PINCTRL;

	vmx->nested.msrs.entry_ctls_high &= ~EVMCS1_UNSUPPORTED_VMENTRY_CTRL;

	vmx->nested.msrs.exit_ctls_high &= ~EVMCS1_UNSUPPORTED_VMEXIT_CTRL;

	vmx->nested.msrs.secondary_ctls_high &= ~EVMCS1_UNSUPPORTED_2NDEXEC;

	vmx->nested.msrs.vmfunc_controls &= ~EVMCS1_UNSUPPORTED_VMFUNC;



	return 0;

}

arch/x86/kvm/vmx/evmcs.h

+167 −290

File changed.

Preview size limit exceeded, changes collapsed.

arch/x86/kvm/vmx/vmcs.h

+2 −0
Original line number Diff line number Diff line
@@ -22,6 +22,8 @@ struct vmcs { 
	char data[0];

};



DECLARE_PER_CPU(struct vmcs *, current_vmcs);



/*

 * vmcs_host_state tracks registers that are loaded from the VMCS on VMEXIT

 * and whose values change infrequently, but are not constant.  I.e. this is

arch/x86/kvm/vmx/vmx.c

+1 −185
Original line number Diff line number Diff line
@@ -385,7 +385,7 @@ static __always_inline void vmx_disable_intercept_for_msr(unsigned long *msr_bit 
							  u32 msr, int type);



static DEFINE_PER_CPU(struct vmcs *, vmxarea);

static DEFINE_PER_CPU(struct vmcs *, current_vmcs);

DEFINE_PER_CPU(struct vmcs *, current_vmcs);

/*

 * We maintain a per-CPU linked-list of VMCS loaded on that CPU. This is needed

 * when a CPU is brought down, and we need to VMCLEAR all VMCSs loaded on it.
@@ -455,155 +455,10 @@ static const u32 vmx_msr_index[] = { 
	MSR_EFER, MSR_TSC_AUX, MSR_STAR,

};



DEFINE_STATIC_KEY_FALSE(enable_evmcs);



#define current_evmcs ((struct hv_enlightened_vmcs *)this_cpu_read(current_vmcs))



#define KVM_EVMCS_VERSION 1



/*

 * Enlightened VMCSv1 doesn't support these:

 *

 *	POSTED_INTR_NV                  = 0x00000002,

 *	GUEST_INTR_STATUS               = 0x00000810,

 *	APIC_ACCESS_ADDR		= 0x00002014,

 *	POSTED_INTR_DESC_ADDR           = 0x00002016,

 *	EOI_EXIT_BITMAP0                = 0x0000201c,

 *	EOI_EXIT_BITMAP1                = 0x0000201e,

 *	EOI_EXIT_BITMAP2                = 0x00002020,

 *	EOI_EXIT_BITMAP3                = 0x00002022,

 *	GUEST_PML_INDEX			= 0x00000812,

 *	PML_ADDRESS			= 0x0000200e,

 *	VM_FUNCTION_CONTROL             = 0x00002018,

 *	EPTP_LIST_ADDRESS               = 0x00002024,

 *	VMREAD_BITMAP                   = 0x00002026,

 *	VMWRITE_BITMAP                  = 0x00002028,

 *

 *	TSC_MULTIPLIER                  = 0x00002032,

 *	PLE_GAP                         = 0x00004020,

 *	PLE_WINDOW                      = 0x00004022,

 *	VMX_PREEMPTION_TIMER_VALUE      = 0x0000482E,

 *      GUEST_IA32_PERF_GLOBAL_CTRL     = 0x00002808,

 *      HOST_IA32_PERF_GLOBAL_CTRL      = 0x00002c04,

 *

 * Currently unsupported in KVM:

 *	GUEST_IA32_RTIT_CTL		= 0x00002814,

 */

#define EVMCS1_UNSUPPORTED_PINCTRL (PIN_BASED_POSTED_INTR | \

				    PIN_BASED_VMX_PREEMPTION_TIMER)

#define EVMCS1_UNSUPPORTED_2NDEXEC					\

	(SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY |				\

	 SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES |			\

	 SECONDARY_EXEC_APIC_REGISTER_VIRT |				\

	 SECONDARY_EXEC_ENABLE_PML |					\

	 SECONDARY_EXEC_ENABLE_VMFUNC |					\

	 SECONDARY_EXEC_SHADOW_VMCS |					\

	 SECONDARY_EXEC_TSC_SCALING |					\

	 SECONDARY_EXEC_PAUSE_LOOP_EXITING)

#define EVMCS1_UNSUPPORTED_VMEXIT_CTRL (VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL)

#define EVMCS1_UNSUPPORTED_VMENTRY_CTRL (VM_ENTRY_LOAD_IA32_PERF_GLOBAL_CTRL)

#define EVMCS1_UNSUPPORTED_VMFUNC (VMX_VMFUNC_EPTP_SWITCHING)



#if IS_ENABLED(CONFIG_HYPERV)

static bool __read_mostly enlightened_vmcs = true;

module_param(enlightened_vmcs, bool, 0444);



static inline void evmcs_write64(unsigned long field, u64 value)

{

	u16 clean_field;

	int offset = get_evmcs_offset(field, &clean_field);



	if (offset < 0)

		return;



	*(u64 *)((char *)current_evmcs + offset) = value;



	current_evmcs->hv_clean_fields &= ~clean_field;

}



static inline void evmcs_write32(unsigned long field, u32 value)

{

	u16 clean_field;

	int offset = get_evmcs_offset(field, &clean_field);



	if (offset < 0)

		return;



	*(u32 *)((char *)current_evmcs + offset) = value;

	current_evmcs->hv_clean_fields &= ~clean_field;

}



static inline void evmcs_write16(unsigned long field, u16 value)

{

	u16 clean_field;

	int offset = get_evmcs_offset(field, &clean_field);



	if (offset < 0)

		return;



	*(u16 *)((char *)current_evmcs + offset) = value;

	current_evmcs->hv_clean_fields &= ~clean_field;

}



static inline u64 evmcs_read64(unsigned long field)

{

	int offset = get_evmcs_offset(field, NULL);



	if (offset < 0)

		return 0;



	return *(u64 *)((char *)current_evmcs + offset);

}



static inline u32 evmcs_read32(unsigned long field)

{

	int offset = get_evmcs_offset(field, NULL);



	if (offset < 0)

		return 0;



	return *(u32 *)((char *)current_evmcs + offset);

}



static inline u16 evmcs_read16(unsigned long field)

{

	int offset = get_evmcs_offset(field, NULL);



	if (offset < 0)

		return 0;



	return *(u16 *)((char *)current_evmcs + offset);

}



static inline void evmcs_touch_msr_bitmap(void)

{

	if (unlikely(!current_evmcs))

		return;



	if (current_evmcs->hv_enlightenments_control.msr_bitmap)

		current_evmcs->hv_clean_fields &=

			~HV_VMX_ENLIGHTENED_CLEAN_FIELD_MSR_BITMAP;

}



static void evmcs_load(u64 phys_addr)

{

	struct hv_vp_assist_page *vp_ap =

		hv_get_vp_assist_page(smp_processor_id());



	vp_ap->current_nested_vmcs = phys_addr;

	vp_ap->enlighten_vmentry = 1;

}



static void evmcs_sanitize_exec_ctrls(struct vmcs_config *vmcs_conf)

{

	vmcs_conf->pin_based_exec_ctrl &= ~EVMCS1_UNSUPPORTED_PINCTRL;

	vmcs_conf->cpu_based_2nd_exec_ctrl &= ~EVMCS1_UNSUPPORTED_2NDEXEC;



	vmcs_conf->vmexit_ctrl &= ~EVMCS1_UNSUPPORTED_VMEXIT_CTRL;

	vmcs_conf->vmentry_ctrl &= ~EVMCS1_UNSUPPORTED_VMENTRY_CTRL;



}



/* check_ept_pointer() should be under protection of ept_pointer_lock. */

static void check_ept_pointer_match(struct kvm *kvm)

{
@@ -650,47 +505,8 @@ static int vmx_hv_remote_flush_tlb(struct kvm *kvm) 
	spin_unlock(&to_kvm_vmx(kvm)->ept_pointer_lock);

	return ret;

}

#else /* !IS_ENABLED(CONFIG_HYPERV) */

static inline void evmcs_write64(unsigned long field, u64 value) {}

static inline void evmcs_write32(unsigned long field, u32 value) {}

static inline void evmcs_write16(unsigned long field, u16 value) {}

static inline u64 evmcs_read64(unsigned long field) { return 0; }

static inline u32 evmcs_read32(unsigned long field) { return 0; }

static inline u16 evmcs_read16(unsigned long field) { return 0; }

static inline void evmcs_load(u64 phys_addr) {}

static inline void evmcs_sanitize_exec_ctrls(struct vmcs_config *vmcs_conf) {}

static inline void evmcs_touch_msr_bitmap(void) {}

#endif /* IS_ENABLED(CONFIG_HYPERV) */



static int nested_enable_evmcs(struct kvm_vcpu *vcpu,

			       uint16_t *vmcs_version)

{

	struct vcpu_vmx *vmx = to_vmx(vcpu);



	/*

	 * vmcs_version represents the range of supported Enlightened VMCS

	 * versions: lower 8 bits is the minimal version, higher 8 bits is the

	 * maximum supported version. KVM supports versions from 1 to

	 * KVM_EVMCS_VERSION.

	 */

	if (vmcs_version)

		*vmcs_version = (KVM_EVMCS_VERSION << 8) | 1;



	/* We don't support disabling the feature for simplicity. */

	if (vmx->nested.enlightened_vmcs_enabled)

		return 0;



	vmx->nested.enlightened_vmcs_enabled = true;



	vmx->nested.msrs.pinbased_ctls_high &= ~EVMCS1_UNSUPPORTED_PINCTRL;

	vmx->nested.msrs.entry_ctls_high &= ~EVMCS1_UNSUPPORTED_VMENTRY_CTRL;

	vmx->nested.msrs.exit_ctls_high &= ~EVMCS1_UNSUPPORTED_VMEXIT_CTRL;

	vmx->nested.msrs.secondary_ctls_high &= ~EVMCS1_UNSUPPORTED_2NDEXEC;

	vmx->nested.msrs.vmfunc_controls &= ~EVMCS1_UNSUPPORTED_VMFUNC;



	return 0;

}



/*

 * Comment's format: document - errata name - stepping - processor name.

 * Refer from