forked from luck/tmp_suning_uos_patched
eceb9973d9
The VMX_PREEMPTION_TIMER flag may be toggled frequently, though not *very* frequently. Since it does not affect KVM's dirty logic, e.g. the preemption timer value is loaded from vmcs12 even if vmcs12 is "clean", there is no need to mark vmcs12 dirty when L1 writes pin controls, and shadowing the field achieves that. Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
80 lines
3.0 KiB
C
80 lines
3.0 KiB
C
#if !defined(SHADOW_FIELD_RO) && !defined(SHADOW_FIELD_RW)
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BUILD_BUG_ON(1)
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#endif
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#ifndef SHADOW_FIELD_RO
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#define SHADOW_FIELD_RO(x, y)
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#endif
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#ifndef SHADOW_FIELD_RW
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#define SHADOW_FIELD_RW(x, y)
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#endif
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/*
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* We do NOT shadow fields that are modified when L0
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* traps and emulates any vmx instruction (e.g. VMPTRLD,
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* VMXON...) executed by L1.
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* For example, VM_INSTRUCTION_ERROR is read
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* by L1 if a vmx instruction fails (part of the error path).
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* Note the code assumes this logic. If for some reason
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* we start shadowing these fields then we need to
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* force a shadow sync when L0 emulates vmx instructions
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* (e.g. force a sync if VM_INSTRUCTION_ERROR is modified
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* by nested_vmx_failValid)
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*
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* When adding or removing fields here, note that shadowed
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* fields must always be synced by prepare_vmcs02, not just
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* prepare_vmcs02_full.
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*/
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/*
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* Keeping the fields ordered by size is an attempt at improving
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* branch prediction in vmcs_read_any and vmcs_write_any.
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*/
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/* 16-bits */
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SHADOW_FIELD_RW(GUEST_INTR_STATUS, guest_intr_status)
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SHADOW_FIELD_RW(GUEST_PML_INDEX, guest_pml_index)
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SHADOW_FIELD_RW(HOST_FS_SELECTOR, host_fs_selector)
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SHADOW_FIELD_RW(HOST_GS_SELECTOR, host_gs_selector)
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/* 32-bits */
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SHADOW_FIELD_RO(VM_EXIT_REASON, vm_exit_reason)
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SHADOW_FIELD_RO(VM_EXIT_INTR_INFO, vm_exit_intr_info)
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SHADOW_FIELD_RO(VM_EXIT_INSTRUCTION_LEN, vm_exit_instruction_len)
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SHADOW_FIELD_RO(IDT_VECTORING_INFO_FIELD, idt_vectoring_info_field)
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SHADOW_FIELD_RO(IDT_VECTORING_ERROR_CODE, idt_vectoring_error_code)
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SHADOW_FIELD_RO(VM_EXIT_INTR_ERROR_CODE, vm_exit_intr_error_code)
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SHADOW_FIELD_RO(GUEST_CS_AR_BYTES, guest_cs_ar_bytes)
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SHADOW_FIELD_RO(GUEST_SS_AR_BYTES, guest_ss_ar_bytes)
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SHADOW_FIELD_RW(CPU_BASED_VM_EXEC_CONTROL, cpu_based_vm_exec_control)
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SHADOW_FIELD_RW(PIN_BASED_VM_EXEC_CONTROL, pin_based_vm_exec_control)
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SHADOW_FIELD_RW(EXCEPTION_BITMAP, exception_bitmap)
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SHADOW_FIELD_RW(VM_ENTRY_EXCEPTION_ERROR_CODE, vm_entry_exception_error_code)
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SHADOW_FIELD_RW(VM_ENTRY_INTR_INFO_FIELD, vm_entry_intr_info_field)
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SHADOW_FIELD_RW(VM_ENTRY_INSTRUCTION_LEN, vm_entry_instruction_len)
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SHADOW_FIELD_RW(TPR_THRESHOLD, tpr_threshold)
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SHADOW_FIELD_RW(GUEST_INTERRUPTIBILITY_INFO, guest_interruptibility_info)
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SHADOW_FIELD_RW(VMX_PREEMPTION_TIMER_VALUE, vmx_preemption_timer_value)
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/* Natural width */
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SHADOW_FIELD_RO(EXIT_QUALIFICATION, exit_qualification)
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SHADOW_FIELD_RO(GUEST_LINEAR_ADDRESS, guest_linear_address)
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SHADOW_FIELD_RW(GUEST_RIP, guest_rip)
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SHADOW_FIELD_RW(GUEST_RSP, guest_rsp)
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SHADOW_FIELD_RW(GUEST_CR0, guest_cr0)
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SHADOW_FIELD_RW(GUEST_CR3, guest_cr3)
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SHADOW_FIELD_RW(GUEST_CR4, guest_cr4)
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SHADOW_FIELD_RW(GUEST_RFLAGS, guest_rflags)
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SHADOW_FIELD_RW(CR0_GUEST_HOST_MASK, cr0_guest_host_mask)
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SHADOW_FIELD_RW(CR0_READ_SHADOW, cr0_read_shadow)
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SHADOW_FIELD_RW(CR4_READ_SHADOW, cr4_read_shadow)
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SHADOW_FIELD_RW(HOST_FS_BASE, host_fs_base)
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SHADOW_FIELD_RW(HOST_GS_BASE, host_gs_base)
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/* 64-bit */
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SHADOW_FIELD_RO(GUEST_PHYSICAL_ADDRESS, guest_physical_address)
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SHADOW_FIELD_RO(GUEST_PHYSICAL_ADDRESS_HIGH, guest_physical_address)
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#undef SHADOW_FIELD_RO
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#undef SHADOW_FIELD_RW
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