[PATCH v4 15/25] KVM: VMX: Extend VMX controls macro shenanigans
From: Vitaly Kuznetsov
Date: Thu Jul 14 2022 - 05:15:48 EST
When VMX controls macros are used to set or clear a control bit, make
sure that this bit was checked in setup_vmcs_config() and thus is properly
reflected in vmcs_config.
No functional change intended.
Suggested-by: Sean Christopherson <seanjc@xxxxxxxxxx>
Reviewed-by: Maxim Levitsky <mlevitsk@xxxxxxxxxx>
Signed-off-by: Vitaly Kuznetsov <vkuznets@xxxxxxxxxx>
---
arch/x86/kvm/vmx/vmx.c | 99 +++++++------------------------------
arch/x86/kvm/vmx/vmx.h | 109 +++++++++++++++++++++++++++++++++++++++++
2 files changed, 127 insertions(+), 81 deletions(-)
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 566be73c6509..93ca9ff8e641 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -2448,7 +2448,6 @@ static __init int setup_vmcs_config(struct vmcs_config *vmcs_conf,
struct vmx_capability *vmx_cap)
{
u32 vmx_msr_low, vmx_msr_high;
- u32 min, opt, min2, opt2;
u32 _pin_based_exec_control = 0;
u32 _cpu_based_exec_control = 0;
u32 _cpu_based_2nd_exec_control = 0;
@@ -2474,28 +2473,10 @@ static __init int setup_vmcs_config(struct vmcs_config *vmcs_conf,
};
memset(vmcs_conf, 0, sizeof(*vmcs_conf));
- min = CPU_BASED_HLT_EXITING |
-#ifdef CONFIG_X86_64
- CPU_BASED_CR8_LOAD_EXITING |
- CPU_BASED_CR8_STORE_EXITING |
-#endif
- 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;
-
- opt = CPU_BASED_TPR_SHADOW |
- CPU_BASED_USE_MSR_BITMAPS |
- CPU_BASED_NMI_WINDOW_EXITING |
- CPU_BASED_ACTIVATE_SECONDARY_CONTROLS |
- CPU_BASED_ACTIVATE_TERTIARY_CONTROLS;
- if (adjust_vmx_controls(min, opt, MSR_IA32_VMX_PROCBASED_CTLS,
+
+ if (adjust_vmx_controls(KVM_REQ_VMX_CPU_BASED_VM_EXEC_CONTROL,
+ KVM_OPT_VMX_CPU_BASED_VM_EXEC_CONTROL,
+ MSR_IA32_VMX_PROCBASED_CTLS,
&_cpu_based_exec_control) < 0)
return -EIO;
#ifdef CONFIG_X86_64
@@ -2504,34 +2485,8 @@ static __init int setup_vmcs_config(struct vmcs_config *vmcs_conf,
~CPU_BASED_CR8_STORE_EXITING;
#endif
if (_cpu_based_exec_control & CPU_BASED_ACTIVATE_SECONDARY_CONTROLS) {
- min2 = 0;
- opt2 = SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES |
- SECONDARY_EXEC_VIRTUALIZE_X2APIC_MODE |
- SECONDARY_EXEC_WBINVD_EXITING |
- SECONDARY_EXEC_ENABLE_VPID |
- SECONDARY_EXEC_ENABLE_EPT |
- SECONDARY_EXEC_UNRESTRICTED_GUEST |
- SECONDARY_EXEC_PAUSE_LOOP_EXITING |
- SECONDARY_EXEC_DESC |
- SECONDARY_EXEC_ENABLE_RDTSCP |
- SECONDARY_EXEC_ENABLE_INVPCID |
- SECONDARY_EXEC_APIC_REGISTER_VIRT |
- SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY |
- SECONDARY_EXEC_SHADOW_VMCS |
- SECONDARY_EXEC_XSAVES |
- SECONDARY_EXEC_RDSEED_EXITING |
- SECONDARY_EXEC_RDRAND_EXITING |
- SECONDARY_EXEC_ENABLE_PML |
- SECONDARY_EXEC_TSC_SCALING |
- SECONDARY_EXEC_ENABLE_USR_WAIT_PAUSE |
- SECONDARY_EXEC_PT_USE_GPA |
- SECONDARY_EXEC_PT_CONCEAL_VMX |
- SECONDARY_EXEC_ENABLE_VMFUNC |
- SECONDARY_EXEC_BUS_LOCK_DETECTION |
- SECONDARY_EXEC_NOTIFY_VM_EXITING |
- SECONDARY_EXEC_ENCLS_EXITING;
-
- if (adjust_vmx_controls(min2, opt2,
+ if (adjust_vmx_controls(KVM_REQ_VMX_SECONDARY_VM_EXEC_CONTROL,
+ KVM_OPT_VMX_SECONDARY_VM_EXEC_CONTROL,
MSR_IA32_VMX_PROCBASED_CTLS2,
&_cpu_based_2nd_exec_control) < 0)
return -EIO;
@@ -2581,30 +2536,20 @@ static __init int setup_vmcs_config(struct vmcs_config *vmcs_conf,
_cpu_based_2nd_exec_control &= ~SECONDARY_EXEC_ENCLS_EXITING;
if (_cpu_based_exec_control & CPU_BASED_ACTIVATE_TERTIARY_CONTROLS) {
- u64 opt3 = TERTIARY_EXEC_IPI_VIRT;
-
- _cpu_based_3rd_exec_control = adjust_vmx_controls64(opt3,
- MSR_IA32_VMX_PROCBASED_CTLS3);
+ _cpu_based_3rd_exec_control =
+ adjust_vmx_controls64(KVM_OPT_VMX_TERTIARY_VM_EXEC_CONTROL,
+ MSR_IA32_VMX_PROCBASED_CTLS3);
}
- min = VM_EXIT_SAVE_DEBUG_CONTROLS | VM_EXIT_ACK_INTR_ON_EXIT;
-#ifdef CONFIG_X86_64
- min |= VM_EXIT_HOST_ADDR_SPACE_SIZE;
-#endif
- opt = VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL |
- VM_EXIT_LOAD_IA32_PAT |
- VM_EXIT_LOAD_IA32_EFER |
- VM_EXIT_CLEAR_BNDCFGS |
- VM_EXIT_PT_CONCEAL_PIP |
- VM_EXIT_CLEAR_IA32_RTIT_CTL;
- if (adjust_vmx_controls(min, opt, MSR_IA32_VMX_EXIT_CTLS,
+ if (adjust_vmx_controls(KVM_REQ_VMX_VM_EXIT_CONTROLS,
+ KVM_OPT_VMX_VM_EXIT_CONTROLS,
+ MSR_IA32_VMX_EXIT_CTLS,
&_vmexit_control) < 0)
return -EIO;
- min = PIN_BASED_EXT_INTR_MASK | PIN_BASED_NMI_EXITING;
- opt = PIN_BASED_VIRTUAL_NMIS | PIN_BASED_POSTED_INTR |
- PIN_BASED_VMX_PREEMPTION_TIMER;
- if (adjust_vmx_controls(min, opt, MSR_IA32_VMX_PINBASED_CTLS,
+ if (adjust_vmx_controls(KVM_REQ_VMX_PIN_BASED_VM_EXEC_CONTROL,
+ KVM_OPT_VMX_PIN_BASED_VM_EXEC_CONTROL,
+ MSR_IA32_VMX_PINBASED_CTLS,
&_pin_based_exec_control) < 0)
return -EIO;
@@ -2614,17 +2559,9 @@ static __init int setup_vmcs_config(struct vmcs_config *vmcs_conf,
SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY))
_pin_based_exec_control &= ~PIN_BASED_POSTED_INTR;
- min = VM_ENTRY_LOAD_DEBUG_CONTROLS;
-#ifdef CONFIG_X86_64
- min |= VM_ENTRY_IA32E_MODE;
-#endif
- opt = 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;
- if (adjust_vmx_controls(min, opt, MSR_IA32_VMX_ENTRY_CTLS,
+ if (adjust_vmx_controls(KVM_REQ_VMX_VM_ENTRY_CONTROLS,
+ KVM_OPT_VMX_VM_ENTRY_CONTROLS,
+ MSR_IA32_VMX_ENTRY_CTLS,
&_vmentry_control) < 0)
return -EIO;
diff --git a/arch/x86/kvm/vmx/vmx.h b/arch/x86/kvm/vmx/vmx.h
index 286c88e285ea..89eaab3495a6 100644
--- a/arch/x86/kvm/vmx/vmx.h
+++ b/arch/x86/kvm/vmx/vmx.h
@@ -467,6 +467,113 @@ static inline u8 vmx_get_rvi(void)
return vmcs_read16(GUEST_INTR_STATUS) & 0xff;
}
+#define __KVM_REQ_VMX_VM_ENTRY_CONTROLS \
+ (VM_ENTRY_LOAD_DEBUG_CONTROLS)
+#ifdef CONFIG_X86_64
+ #define KVM_REQ_VMX_VM_ENTRY_CONTROLS \
+ (__KVM_REQ_VMX_VM_ENTRY_CONTROLS | \
+ VM_ENTRY_IA32E_MODE)
+#else
+ #define KVM_REQ_VMX_VM_ENTRY_CONTROLS \
+ __KVM_REQ_VMX_VM_ENTRY_CONTROLS
+#endif
+#define KVM_OPT_VMX_VM_ENTRY_CONTROLS \
+ (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 __KVM_REQ_VMX_VM_EXIT_CONTROLS \
+ (VM_EXIT_SAVE_DEBUG_CONTROLS | \
+ VM_EXIT_ACK_INTR_ON_EXIT)
+#ifdef CONFIG_X86_64
+ #define KVM_REQ_VMX_VM_EXIT_CONTROLS \
+ (__KVM_REQ_VMX_VM_EXIT_CONTROLS | \
+ VM_EXIT_HOST_ADDR_SPACE_SIZE)
+#else
+ #define KVM_REQ_VMX_VM_EXIT_CONTROLS \
+ __KVM_REQ_VMX_VM_EXIT_CONTROLS
+#endif
+#define KVM_OPT_VMX_VM_EXIT_CONTROLS \
+ (VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL | \
+ VM_EXIT_LOAD_IA32_PAT | \
+ VM_EXIT_LOAD_IA32_EFER | \
+ VM_EXIT_CLEAR_BNDCFGS | \
+ VM_EXIT_PT_CONCEAL_PIP | \
+ VM_EXIT_CLEAR_IA32_RTIT_CTL)
+
+#define KVM_REQ_VMX_PIN_BASED_VM_EXEC_CONTROL \
+ (PIN_BASED_EXT_INTR_MASK | \
+ PIN_BASED_NMI_EXITING)
+#define KVM_OPT_VMX_PIN_BASED_VM_EXEC_CONTROL \
+ (PIN_BASED_VIRTUAL_NMIS | \
+ PIN_BASED_POSTED_INTR | \
+ PIN_BASED_VMX_PREEMPTION_TIMER)
+
+#define __KVM_REQ_VMX_CPU_BASED_VM_EXEC_CONTROL \
+ (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)
+
+#ifdef CONFIG_X86_64
+ #define KVM_REQ_VMX_CPU_BASED_VM_EXEC_CONTROL \
+ (__KVM_REQ_VMX_CPU_BASED_VM_EXEC_CONTROL | \
+ CPU_BASED_CR8_LOAD_EXITING | \
+ CPU_BASED_CR8_STORE_EXITING)
+#else
+ #define KVM_REQ_VMX_CPU_BASED_VM_EXEC_CONTROL \
+ __KVM_REQ_VMX_CPU_BASED_VM_EXEC_CONTROL
+#endif
+
+#define KVM_OPT_VMX_CPU_BASED_VM_EXEC_CONTROL \
+ (CPU_BASED_TPR_SHADOW | \
+ CPU_BASED_USE_MSR_BITMAPS | \
+ CPU_BASED_NMI_WINDOW_EXITING | \
+ CPU_BASED_ACTIVATE_SECONDARY_CONTROLS | \
+ CPU_BASED_ACTIVATE_TERTIARY_CONTROLS)
+
+#define KVM_REQ_VMX_SECONDARY_VM_EXEC_CONTROL 0
+#define KVM_OPT_VMX_SECONDARY_VM_EXEC_CONTROL \
+ (SECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES | \
+ SECONDARY_EXEC_VIRTUALIZE_X2APIC_MODE | \
+ SECONDARY_EXEC_WBINVD_EXITING | \
+ SECONDARY_EXEC_ENABLE_VPID | \
+ SECONDARY_EXEC_ENABLE_EPT | \
+ SECONDARY_EXEC_UNRESTRICTED_GUEST | \
+ SECONDARY_EXEC_PAUSE_LOOP_EXITING | \
+ SECONDARY_EXEC_DESC | \
+ SECONDARY_EXEC_ENABLE_RDTSCP | \
+ SECONDARY_EXEC_ENABLE_INVPCID | \
+ SECONDARY_EXEC_APIC_REGISTER_VIRT | \
+ SECONDARY_EXEC_VIRTUAL_INTR_DELIVERY | \
+ SECONDARY_EXEC_SHADOW_VMCS | \
+ SECONDARY_EXEC_XSAVES | \
+ SECONDARY_EXEC_RDSEED_EXITING | \
+ SECONDARY_EXEC_RDRAND_EXITING | \
+ SECONDARY_EXEC_ENABLE_PML | \
+ SECONDARY_EXEC_TSC_SCALING | \
+ SECONDARY_EXEC_ENABLE_USR_WAIT_PAUSE | \
+ SECONDARY_EXEC_PT_USE_GPA | \
+ SECONDARY_EXEC_PT_CONCEAL_VMX | \
+ SECONDARY_EXEC_ENABLE_VMFUNC | \
+ SECONDARY_EXEC_BUS_LOCK_DETECTION | \
+ SECONDARY_EXEC_NOTIFY_VM_EXITING | \
+ SECONDARY_EXEC_ENCLS_EXITING)
+
+#define KVM_REQ_VMX_TERTIARY_VM_EXEC_CONTROL 0
+#define KVM_OPT_VMX_TERTIARY_VM_EXEC_CONTROL \
+ (TERTIARY_EXEC_IPI_VIRT)
+
#define BUILD_CONTROLS_SHADOW(lname, uname, bits) \
static inline void lname##_controls_set(struct vcpu_vmx *vmx, u##bits val) \
{ \
@@ -485,10 +592,12 @@ static inline u##bits lname##_controls_get(struct vcpu_vmx *vmx) \
} \
static inline void lname##_controls_setbit(struct vcpu_vmx *vmx, u##bits val) \
{ \
+ BUILD_BUG_ON(!(val & (KVM_REQ_VMX_##uname | KVM_OPT_VMX_##uname))); \
lname##_controls_set(vmx, lname##_controls_get(vmx) | val); \
} \
static inline void lname##_controls_clearbit(struct vcpu_vmx *vmx, u##bits val) \
{ \
+ BUILD_BUG_ON(!(val & (KVM_REQ_VMX_##uname | KVM_OPT_VMX_##uname))); \
lname##_controls_set(vmx, lname##_controls_get(vmx) & ~val); \
}
BUILD_CONTROLS_SHADOW(vm_entry, VM_ENTRY_CONTROLS, 32)
--
2.35.3