Enable the secondary VM exit controls to prepare for FRED enabling.
The activation of the secondary VM exit controls is off now, and it will be switched on when a VMX feature needing it is enabled.
Tested-by: Shan Kang shan.kang@intel.com Signed-off-by: Xin Li xin3.li@intel.com --- arch/x86/include/asm/msr-index.h | 1 + arch/x86/include/asm/vmx.h | 3 +++ arch/x86/kvm/vmx/capabilities.h | 9 ++++++++- arch/x86/kvm/vmx/vmcs.h | 1 + arch/x86/kvm/vmx/vmx.c | 28 +++++++++++++++++++++++++--- arch/x86/kvm/vmx/vmx.h | 7 ++++++- 6 files changed, 44 insertions(+), 5 deletions(-)
diff --git a/arch/x86/include/asm/msr-index.h b/arch/x86/include/asm/msr-index.h index d7d4eace5dae..c95ed288aa5d 100644 --- a/arch/x86/include/asm/msr-index.h +++ b/arch/x86/include/asm/msr-index.h @@ -1109,6 +1109,7 @@ #define MSR_IA32_VMX_TRUE_ENTRY_CTLS 0x00000490 #define MSR_IA32_VMX_VMFUNC 0x00000491 #define MSR_IA32_VMX_PROCBASED_CTLS3 0x00000492 +#define MSR_IA32_VMX_EXIT_CTLS2 0x00000493
/* Resctrl MSRs: */ /* - Intel: */ diff --git a/arch/x86/include/asm/vmx.h b/arch/x86/include/asm/vmx.h index 5771c5751e7e..4d4177ec802c 100644 --- a/arch/x86/include/asm/vmx.h +++ b/arch/x86/include/asm/vmx.h @@ -105,6 +105,7 @@ #define VM_EXIT_CLEAR_BNDCFGS 0x00800000 #define VM_EXIT_PT_CONCEAL_PIP 0x01000000 #define VM_EXIT_CLEAR_IA32_RTIT_CTL 0x02000000 +#define VM_EXIT_ACTIVATE_SECONDARY_CONTROLS 0x80000000
#define VM_EXIT_ALWAYSON_WITHOUT_TRUE_MSR 0x00036dff
@@ -247,6 +248,8 @@ enum vmcs_field { TERTIARY_VM_EXEC_CONTROL_HIGH = 0x00002035, PID_POINTER_TABLE = 0x00002042, PID_POINTER_TABLE_HIGH = 0x00002043, + SECONDARY_VM_EXIT_CONTROLS = 0x00002044, + SECONDARY_VM_EXIT_CONTROLS_HIGH = 0x00002045, GUEST_PHYSICAL_ADDRESS = 0x00002400, GUEST_PHYSICAL_ADDRESS_HIGH = 0x00002401, VMCS_LINK_POINTER = 0x00002800, diff --git a/arch/x86/kvm/vmx/capabilities.h b/arch/x86/kvm/vmx/capabilities.h index cb6588238f46..e8f3ad0f79ee 100644 --- a/arch/x86/kvm/vmx/capabilities.h +++ b/arch/x86/kvm/vmx/capabilities.h @@ -59,8 +59,9 @@ struct vmcs_config { u32 cpu_based_exec_ctrl; u32 cpu_based_2nd_exec_ctrl; u64 cpu_based_3rd_exec_ctrl; - u32 vmexit_ctrl; u32 vmentry_ctrl; + u32 vmexit_ctrl; + u64 secondary_vmexit_ctrl; u64 misc; struct nested_vmx_msrs nested; }; @@ -136,6 +137,12 @@ static inline bool cpu_has_tertiary_exec_ctrls(void) CPU_BASED_ACTIVATE_TERTIARY_CONTROLS; }
+static inline bool cpu_has_secondary_vmexit_ctrls(void) +{ + return vmcs_config.vmexit_ctrl & + VM_EXIT_ACTIVATE_SECONDARY_CONTROLS; +} + static inline bool cpu_has_vmx_virtualize_apic_accesses(void) { return vmcs_config.cpu_based_2nd_exec_ctrl & diff --git a/arch/x86/kvm/vmx/vmcs.h b/arch/x86/kvm/vmx/vmcs.h index 7c1996b433e2..7d45a6504200 100644 --- a/arch/x86/kvm/vmx/vmcs.h +++ b/arch/x86/kvm/vmx/vmcs.h @@ -47,6 +47,7 @@ struct vmcs_host_state { struct vmcs_controls_shadow { u32 vm_entry; u32 vm_exit; + u64 secondary_vm_exit; u32 pin; u32 exec; u32 secondary_exec; diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index 396a806bf2b2..df769207cbe0 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -2574,6 +2574,7 @@ static int setup_vmcs_config(struct vmcs_config *vmcs_conf, u32 _cpu_based_2nd_exec_control = 0; u64 _cpu_based_3rd_exec_control = 0; u32 _vmexit_control = 0; + u64 _secondary_vmexit_control = 0; u32 _vmentry_control = 0; u64 basic_msr; int i; @@ -2693,6 +2694,11 @@ static int setup_vmcs_config(struct vmcs_config *vmcs_conf, _vmexit_control &= ~x_ctrl; }
+ if (_vmexit_control & VM_EXIT_ACTIVATE_SECONDARY_CONTROLS) + _secondary_vmexit_control = + adjust_vmx_controls64(KVM_OPTIONAL_VMX_SECONDARY_VM_EXIT_CONTROLS, + MSR_IA32_VMX_EXIT_CTLS2); + rdmsrl(MSR_IA32_VMX_BASIC, basic_msr);
/* IA-32 SDM Vol 3B: VMCS size is never greater than 4kB. */ @@ -2714,8 +2720,9 @@ static int setup_vmcs_config(struct vmcs_config *vmcs_conf, vmcs_conf->cpu_based_exec_ctrl = _cpu_based_exec_control; vmcs_conf->cpu_based_2nd_exec_ctrl = _cpu_based_2nd_exec_control; vmcs_conf->cpu_based_3rd_exec_ctrl = _cpu_based_3rd_exec_control; - vmcs_conf->vmexit_ctrl = _vmexit_control; vmcs_conf->vmentry_ctrl = _vmentry_control; + vmcs_conf->vmexit_ctrl = _vmexit_control; + vmcs_conf->secondary_vmexit_ctrl = _secondary_vmexit_control;
rdmsrl(MSR_IA32_VMX_MISC, vmcs_conf->misc);
@@ -4420,9 +4427,21 @@ static u32 vmx_vmexit_ctrl(void) if (cpu_has_perf_global_ctrl_bug()) vmexit_ctrl &= ~VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL;
- /* Loading of EFER and PERF_GLOBAL_CTRL are toggled dynamically */ + /* + * The following features are toggled dynamically: + * - Loading of PERF_GLOBAL_CTRL + * - Loading of EFER + * - Activating of SECONDARY_CONTROLS + */ return vmexit_ctrl & - ~(VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL | VM_EXIT_LOAD_IA32_EFER); + ~(VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL | + VM_EXIT_LOAD_IA32_EFER | + VM_EXIT_ACTIVATE_SECONDARY_CONTROLS); +} + +static u64 vmx_secondary_vmexit_ctrl(void) +{ + return vmcs_config.secondary_vmexit_ctrl; }
static void vmx_refresh_apicv_exec_ctrl(struct kvm_vcpu *vcpu) @@ -4770,6 +4789,9 @@ static void init_vmcs(struct vcpu_vmx *vmx)
vm_exit_controls_set(vmx, vmx_vmexit_ctrl());
+ if (cpu_has_secondary_vmexit_ctrls()) + secondary_vm_exit_controls_set(vmx, vmx_secondary_vmexit_ctrl()); + /* 22.2.1, 20.8.1 */ vm_entry_controls_set(vmx, vmx_vmentry_ctrl());
diff --git a/arch/x86/kvm/vmx/vmx.h b/arch/x86/kvm/vmx/vmx.h index c2130d2c8e24..99a0f6783085 100644 --- a/arch/x86/kvm/vmx/vmx.h +++ b/arch/x86/kvm/vmx/vmx.h @@ -502,7 +502,11 @@ static inline u8 vmx_get_rvi(void) VM_EXIT_LOAD_IA32_EFER | \ VM_EXIT_CLEAR_BNDCFGS | \ VM_EXIT_PT_CONCEAL_PIP | \ - VM_EXIT_CLEAR_IA32_RTIT_CTL) + VM_EXIT_CLEAR_IA32_RTIT_CTL | \ + VM_EXIT_ACTIVATE_SECONDARY_CONTROLS) + +#define KVM_REQUIRED_VMX_SECONDARY_VM_EXIT_CONTROLS (0) +#define KVM_OPTIONAL_VMX_SECONDARY_VM_EXIT_CONTROLS (0)
#define KVM_REQUIRED_VMX_PIN_BASED_VM_EXEC_CONTROL \ (PIN_BASED_EXT_INTR_MASK | \ @@ -606,6 +610,7 @@ static __always_inline void lname##_controls_clearbit(struct vcpu_vmx *vmx, u##b } BUILD_CONTROLS_SHADOW(vm_entry, VM_ENTRY_CONTROLS, 32) BUILD_CONTROLS_SHADOW(vm_exit, VM_EXIT_CONTROLS, 32) +BUILD_CONTROLS_SHADOW(secondary_vm_exit, SECONDARY_VM_EXIT_CONTROLS, 64) BUILD_CONTROLS_SHADOW(pin, PIN_BASED_VM_EXEC_CONTROL, 32) BUILD_CONTROLS_SHADOW(exec, CPU_BASED_VM_EXEC_CONTROL, 32) BUILD_CONTROLS_SHADOW(secondary_exec, SECONDARY_VM_EXEC_CONTROL, 32)