hyperv_evmcs.h

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/* SPDX-License-Identifier: GPL-2.0 */
/*
 * This file contains common definitions for working with Enlightened VMCS which
 * are used both by Hyper-V on KVM and KVM on Hyper-V.
 */
#ifndef __KVM_X86_VMX_HYPERV_EVMCS_H
#define __KVM_X86_VMX_HYPERV_EVMCS_H
 
#include <asm/hyperv-tlfs.h>
 
#include "capabilities.h"
#include "vmcs12.h"
 
#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,
 *
 * Currently unsupported in KVM:
 *  GUEST_IA32_RTIT_CTL     = 0x00002814,
 */
#define EVMCS1_SUPPORTED_PINCTRL                    \
    (PIN_BASED_ALWAYSON_WITHOUT_TRUE_MSR |              \
     PIN_BASED_EXT_INTR_MASK |                  \
     PIN_BASED_NMI_EXITING |                    \
     PIN_BASED_VIRTUAL_NMIS)
 
#define EVMCS1_SUPPORTED_EXEC_CTRL                  \
    (CPU_BASED_ALWAYSON_WITHOUT_TRUE_MSR |              \
     CPU_BASED_HLT_EXITING |                    \
     CPU_BASED_CR3_LOAD_EXITING |                   \
     CPU_BASED_CR3_STORE_EXITING |                  \
     CPU_BASED_UNCOND_IO_EXITING |                  \
     CPU_BASED_MOV_DR_EXITING |                 \
     CPU_BASED_USE_TSC_OFFSETTING |                 \
     CPU_BASED_MWAIT_EXITING |                  \
     CPU_BASED_MONITOR_EXITING |                    \
     CPU_BASED_INVLPG_EXITING |                 \
     CPU_BASED_RDPMC_EXITING |                  \
     CPU_BASED_INTR_WINDOW_EXITING |                \
     CPU_BASED_CR8_LOAD_EXITING |                   \
     CPU_BASED_CR8_STORE_EXITING |                  \
     CPU_BASED_RDTSC_EXITING |                  \
     CPU_BASED_TPR_SHADOW |                     \
     CPU_BASED_USE_IO_BITMAPS |                 \
     CPU_BASED_MONITOR_TRAP_FLAG |                  \
     CPU_BASED_USE_MSR_BITMAPS |                    \
     CPU_BASED_NMI_WINDOW_EXITING |                 \
     CPU_BASED_PAUSE_EXITING |                  \
     CPU_BASED_ACTIVATE_SECONDARY_CONTROLS)
 
#define EVMCS1_SUPPORTED_2NDEXEC                    \
    (SECONDARY_EXEC_VIRTUALIZE_X2APIC_MODE |            \
     SECONDARY_EXEC_WBINVD_EXITING |                \
     SECONDARY_EXEC_ENABLE_VPID |                   \
     SECONDARY_EXEC_ENABLE_EPT |                    \
     SECONDARY_EXEC_UNRESTRICTED_GUEST |                \
     SECONDARY_EXEC_DESC |                      \
     SECONDARY_EXEC_ENABLE_RDTSCP |                 \
     SECONDARY_EXEC_ENABLE_INVPCID |                \
     SECONDARY_EXEC_ENABLE_XSAVES |                 \
     SECONDARY_EXEC_RDSEED_EXITING |                \
     SECONDARY_EXEC_RDRAND_EXITING |                \
     SECONDARY_EXEC_TSC_SCALING |                   \
     SECONDARY_EXEC_ENABLE_USR_WAIT_PAUSE |             \
     SECONDARY_EXEC_PT_USE_GPA |                    \
     SECONDARY_EXEC_PT_CONCEAL_VMX |                \
     SECONDARY_EXEC_BUS_LOCK_DETECTION |                \
     SECONDARY_EXEC_NOTIFY_VM_EXITING |             \
     SECONDARY_EXEC_ENCLS_EXITING)
 
#define EVMCS1_SUPPORTED_3RDEXEC (0ULL)
 
#define EVMCS1_SUPPORTED_VMEXIT_CTRL                    \
    (VM_EXIT_ALWAYSON_WITHOUT_TRUE_MSR |                \
     VM_EXIT_SAVE_DEBUG_CONTROLS |                  \
     VM_EXIT_ACK_INTR_ON_EXIT |                 \
     VM_EXIT_HOST_ADDR_SPACE_SIZE |                 \
     VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL |               \
     VM_EXIT_SAVE_IA32_PAT |                    \
     VM_EXIT_LOAD_IA32_PAT |                    \
     VM_EXIT_SAVE_IA32_EFER |                   \
     VM_EXIT_LOAD_IA32_EFER |                   \
     VM_EXIT_CLEAR_BNDCFGS |                    \
     VM_EXIT_PT_CONCEAL_PIP |                   \
     VM_EXIT_CLEAR_IA32_RTIT_CTL)
 
#define EVMCS1_SUPPORTED_VMENTRY_CTRL                   \
    (VM_ENTRY_ALWAYSON_WITHOUT_TRUE_MSR |               \
     VM_ENTRY_LOAD_DEBUG_CONTROLS |                 \
     VM_ENTRY_IA32E_MODE |                      \
     VM_ENTRY_LOAD_IA32_PERF_GLOBAL_CTRL |              \
     VM_ENTRY_LOAD_IA32_PAT |                   \
     VM_ENTRY_LOAD_IA32_EFER |                  \
     VM_ENTRY_LOAD_BNDCFGS |                    \
     VM_ENTRY_PT_CONCEAL_PIP |                  \
     VM_ENTRY_LOAD_IA32_RTIT_CTL)
 
#define EVMCS1_SUPPORTED_VMFUNC (0)
 
struct evmcs_field {
    u16 offset;
    u16 clean_field;
};
 
extern const struct evmcs_field vmcs_field_to_evmcs_1[];
extern const unsigned int nr_evmcs_1_fields;
 
static __always_inline int evmcs_field_offset(unsigned long field,
                          u16 *clean_field)
{
    const struct evmcs_field *evmcs_field;
    unsigned int index = ROL16(field, 6);
 
    if (unlikely(index >= nr_evmcs_1_fields))
        return -ENOENT;
 
    evmcs_field = &vmcs_field_to_evmcs_1[index];
 
    /*
     * Use offset=0 to detect holes in eVMCS. This offset belongs to
     * 'revision_id' but this field has no encoding and is supposed to
     * be accessed directly.
     */
    if (unlikely(!evmcs_field->offset))
        return -ENOENT;
 
    if (clean_field)
        *clean_field = evmcs_field->clean_field;
 
    return evmcs_field->offset;
}
 
static inline u64 evmcs_read_any(struct hv_enlightened_vmcs *evmcs,
                 unsigned long field, u16 offset)
{
    /*
     * vmcs12_read_any() doesn't care whether the supplied structure
     * is 'struct vmcs12' or 'struct hv_enlightened_vmcs' as it takes
     * the exact offset of the required field, use it for convenience
     * here.
     */
    return vmcs12_read_any((void *)evmcs, field, offset);
}
 
#endif /* __KVM_X86_VMX_HYPERV_H */