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KVM: VMX: Rename the "shared_msr_entry" struct to "vmx_uret_msr"

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Rename struct "shared_msr_entry" to "vmx_uret_msr" to align with x86's
rename of "shared_msrs" to "user_return_msrs", and to call out that the
struct is specific to VMX, i.e. not part of the generic "shared_msrs"
framework.  Abbreviate "user_return" as "uret" to keep line lengths
marginally sane and code more or less readable.

No functional change intended.

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Message-Id: <20200923180409.32255-5-sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This commit is contained in:
Sean Christopherson 2020-09-23 11:03:58 -07:00 committed by Paolo Bonzini
parent a128a934f2
commit eb3db1b137
3 changed files with 35 additions and 35 deletions
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2
arch/x86/kvm/vmx/nested.c
View File

@ -4273,7 +4273,7 @@ static void load_vmcs12_host_state(struct kvm_vcpu *vcpu,
static inline u64 nested_vmx_get_vmcs01_guest_efer(struct vcpu_vmx *vmx) static inline u64 nested_vmx_get_vmcs01_guest_efer(struct vcpu_vmx *vmx)
{ {
struct shared_msr_entry *efer_msr; struct vmx_uret_msr *efer_msr;
unsigned int i; unsigned int i;
if (vm_entry_controls_get(vmx) & VM_ENTRY_LOAD_IA32_EFER) if (vm_entry_controls_get(vmx) & VM_ENTRY_LOAD_IA32_EFER)

58
arch/x86/kvm/vmx/vmx.c
View File

@ -616,28 +616,28 @@ static inline int __find_msr_index(struct vcpu_vmx *vmx, u32 msr)
int i; int i;
for (i = 0; i < vmx->nmsrs; ++i) for (i = 0; i < vmx->nmsrs; ++i)
if (vmx_msr_index[vmx->guest_msrs[i].index] == msr) if (vmx_msr_index[vmx->guest_uret_msrs[i].index] == msr)
return i; return i;
return -1; return -1;
} }
struct shared_msr_entry *find_msr_entry(struct vcpu_vmx *vmx, u32 msr) struct vmx_uret_msr *find_msr_entry(struct vcpu_vmx *vmx, u32 msr)
{ {
int i; int i;
i = __find_msr_index(vmx, msr); i = __find_msr_index(vmx, msr);
if (i >= 0) if (i >= 0)
return &vmx->guest_msrs[i]; return &vmx->guest_uret_msrs[i];
return NULL; return NULL;
} }
static int vmx_set_guest_msr(struct vcpu_vmx *vmx, struct shared_msr_entry *msr, u64 data) static int vmx_set_guest_msr(struct vcpu_vmx *vmx, struct vmx_uret_msr *msr, u64 data)
{ {
int ret = 0; int ret = 0;
u64 old_msr_data = msr->data; u64 old_msr_data = msr->data;
msr->data = data; msr->data = data;
if (msr - vmx->guest_msrs < vmx->save_nmsrs) { if (msr - vmx->guest_uret_msrs < vmx->save_nmsrs) {
preempt_disable(); preempt_disable();
ret = kvm_set_user_return_msr(msr->index, msr->data, msr->mask); ret = kvm_set_user_return_msr(msr->index, msr->data, msr->mask);
preempt_enable(); preempt_enable();
@ -982,8 +982,8 @@ static bool update_transition_efer(struct vcpu_vmx *vmx, int efer_offset)
guest_efer &= ~ignore_bits; guest_efer &= ~ignore_bits;
guest_efer |= host_efer & ignore_bits; guest_efer |= host_efer & ignore_bits;
vmx->guest_msrs[efer_offset].data = guest_efer; vmx->guest_uret_msrs[efer_offset].data = guest_efer;
vmx->guest_msrs[efer_offset].mask = ~ignore_bits; vmx->guest_uret_msrs[efer_offset].mask = ~ignore_bits;
return true; return true;
} }
@ -1137,9 +1137,9 @@ void vmx_prepare_switch_to_guest(struct kvm_vcpu *vcpu)
if (!vmx->guest_msrs_ready) { if (!vmx->guest_msrs_ready) {
vmx->guest_msrs_ready = true; vmx->guest_msrs_ready = true;
for (i = 0; i < vmx->save_nmsrs; ++i) for (i = 0; i < vmx->save_nmsrs; ++i)
kvm_set_user_return_msr(vmx->guest_msrs[i].index, kvm_set_user_return_msr(vmx->guest_uret_msrs[i].index,
vmx->guest_msrs[i].data, vmx->guest_uret_msrs[i].data,
vmx->guest_msrs[i].mask); vmx->guest_uret_msrs[i].mask);
} }
@ -1614,11 +1614,11 @@ static void vmx_queue_exception(struct kvm_vcpu *vcpu)
*/ */
static void move_msr_up(struct vcpu_vmx *vmx, int from, int to) static void move_msr_up(struct vcpu_vmx *vmx, int from, int to)
{ {
struct shared_msr_entry tmp; struct vmx_uret_msr tmp;
tmp = vmx->guest_msrs[to]; tmp = vmx->guest_uret_msrs[to];
vmx->guest_msrs[to] = vmx->guest_msrs[from]; vmx->guest_uret_msrs[to] = vmx->guest_uret_msrs[from];
vmx->guest_msrs[from] = tmp; vmx->guest_uret_msrs[from] = tmp;
} }
/* /*
@ -1729,7 +1729,7 @@ static int vmx_get_msr_feature(struct kvm_msr_entry *msr)
static int vmx_get_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info) static int vmx_get_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
{ {
struct vcpu_vmx *vmx = to_vmx(vcpu); struct vcpu_vmx *vmx = to_vmx(vcpu);
struct shared_msr_entry *msr; struct vmx_uret_msr *msr;
u32 index; u32 index;
switch (msr_info->index) { switch (msr_info->index) {
@ -1750,7 +1750,7 @@ static int vmx_get_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
if (!msr_info->host_initiated && if (!msr_info->host_initiated &&
!(vcpu->arch.arch_capabilities & ARCH_CAP_TSX_CTRL_MSR)) !(vcpu->arch.arch_capabilities & ARCH_CAP_TSX_CTRL_MSR))
return 1; return 1;
goto find_shared_msr; goto find_uret_msr;
case MSR_IA32_UMWAIT_CONTROL: case MSR_IA32_UMWAIT_CONTROL:
if (!msr_info->host_initiated && !vmx_has_waitpkg(vmx)) if (!msr_info->host_initiated && !vmx_has_waitpkg(vmx))
return 1; return 1;
@ -1857,9 +1857,9 @@ static int vmx_get_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
if (!msr_info->host_initiated && if (!msr_info->host_initiated &&
!guest_cpuid_has(vcpu, X86_FEATURE_RDTSCP)) !guest_cpuid_has(vcpu, X86_FEATURE_RDTSCP))
return 1; return 1;
goto find_shared_msr; goto find_uret_msr;
default: default:
find_shared_msr: find_uret_msr:
msr = find_msr_entry(vmx, msr_info->index); msr = find_msr_entry(vmx, msr_info->index);
if (msr) { if (msr) {
msr_info->data = msr->data; msr_info->data = msr->data;
@ -1889,7 +1889,7 @@ static u64 nested_vmx_truncate_sysenter_addr(struct kvm_vcpu *vcpu,
static int vmx_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info) static int vmx_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
{ {
struct vcpu_vmx *vmx = to_vmx(vcpu); struct vcpu_vmx *vmx = to_vmx(vcpu);
struct shared_msr_entry *msr; struct vmx_uret_msr *msr;
int ret = 0; int ret = 0;
u32 msr_index = msr_info->index; u32 msr_index = msr_info->index;
u64 data = msr_info->data; u64 data = msr_info->data;
@ -1993,7 +1993,7 @@ static int vmx_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
return 1; return 1;
if (data & ~(TSX_CTRL_RTM_DISABLE | TSX_CTRL_CPUID_CLEAR)) if (data & ~(TSX_CTRL_RTM_DISABLE | TSX_CTRL_CPUID_CLEAR))
return 1; return 1;
goto find_shared_msr; goto find_uret_msr;
case MSR_IA32_PRED_CMD: case MSR_IA32_PRED_CMD:
if (!msr_info->host_initiated && if (!msr_info->host_initiated &&
!guest_cpuid_has(vcpu, X86_FEATURE_SPEC_CTRL)) !guest_cpuid_has(vcpu, X86_FEATURE_SPEC_CTRL))
@ -2130,10 +2130,10 @@ static int vmx_set_msr(struct kvm_vcpu *vcpu, struct msr_data *msr_info)
/* Check reserved bit, higher 32 bits should be zero */ /* Check reserved bit, higher 32 bits should be zero */
if ((data >> 32) != 0) if ((data >> 32) != 0)
return 1; return 1;
goto find_shared_msr; goto find_uret_msr;
default: default:
find_shared_msr: find_uret_msr:
msr = find_msr_entry(vmx, msr_index); msr = find_msr_entry(vmx, msr_index);
if (msr) if (msr)
ret = vmx_set_guest_msr(vmx, msr, data); ret = vmx_set_guest_msr(vmx, msr, data);
@ -2767,7 +2767,7 @@ static void enter_rmode(struct kvm_vcpu *vcpu)
void vmx_set_efer(struct kvm_vcpu *vcpu, u64 efer) void vmx_set_efer(struct kvm_vcpu *vcpu, u64 efer)
{ {
struct vcpu_vmx *vmx = to_vmx(vcpu); struct vcpu_vmx *vmx = to_vmx(vcpu);
struct shared_msr_entry *msr = find_msr_entry(vmx, MSR_EFER); struct vmx_uret_msr *msr = find_msr_entry(vmx, MSR_EFER);
if (!msr) if (!msr)
return; return;
@ -6721,7 +6721,7 @@ static int vmx_create_vcpu(struct kvm_vcpu *vcpu)
goto free_vpid; goto free_vpid;
} }
BUILD_BUG_ON(ARRAY_SIZE(vmx_msr_index) != MAX_NR_SHARED_MSRS); BUILD_BUG_ON(ARRAY_SIZE(vmx_msr_index) != MAX_NR_USER_RETURN_MSRS);
for (i = 0; i < ARRAY_SIZE(vmx_msr_index); ++i) { for (i = 0; i < ARRAY_SIZE(vmx_msr_index); ++i) {
u32 index = vmx_msr_index[i]; u32 index = vmx_msr_index[i];
@ -6733,8 +6733,8 @@ static int vmx_create_vcpu(struct kvm_vcpu *vcpu)
if (wrmsr_safe(index, data_low, data_high) < 0) if (wrmsr_safe(index, data_low, data_high) < 0)
continue; continue;
vmx->guest_msrs[j].index = i; vmx->guest_uret_msrs[j].index = i;
vmx->guest_msrs[j].data = 0; vmx->guest_uret_msrs[j].data = 0;
switch (index) { switch (index) {
case MSR_IA32_TSX_CTRL: case MSR_IA32_TSX_CTRL:
/* /*
@ -6742,10 +6742,10 @@ static int vmx_create_vcpu(struct kvm_vcpu *vcpu)
* let's avoid changing CPUID bits under the host * let's avoid changing CPUID bits under the host
* kernel's feet. * kernel's feet.
*/ */
vmx->guest_msrs[j].mask = ~(u64)TSX_CTRL_CPUID_CLEAR; vmx->guest_uret_msrs[j].mask = ~(u64)TSX_CTRL_CPUID_CLEAR;
break; break;
default: default:
vmx->guest_msrs[j].mask = -1ull; vmx->guest_uret_msrs[j].mask = -1ull;
break; break;
} }
++vmx->nmsrs; ++vmx->nmsrs;
@ -7111,7 +7111,7 @@ static void vmx_vcpu_after_set_cpuid(struct kvm_vcpu *vcpu)
update_intel_pt_cfg(vcpu); update_intel_pt_cfg(vcpu);
if (boot_cpu_has(X86_FEATURE_RTM)) { if (boot_cpu_has(X86_FEATURE_RTM)) {
struct shared_msr_entry *msr; struct vmx_uret_msr *msr;
msr = find_msr_entry(vmx, MSR_IA32_TSX_CTRL); msr = find_msr_entry(vmx, MSR_IA32_TSX_CTRL);
if (msr) { if (msr) {
bool enabled = guest_cpuid_has(vcpu, X86_FEATURE_RTM); bool enabled = guest_cpuid_has(vcpu, X86_FEATURE_RTM);

10
arch/x86/kvm/vmx/vmx.h
View File

@ -23,9 +23,9 @@ extern const u32 vmx_msr_index[];
#define X2APIC_MSR(r) (APIC_BASE_MSR + ((r) >> 4)) #define X2APIC_MSR(r) (APIC_BASE_MSR + ((r) >> 4))
#ifdef CONFIG_X86_64 #ifdef CONFIG_X86_64
#define MAX_NR_SHARED_MSRS 7 #define MAX_NR_USER_RETURN_MSRS 7
#else #else
#define MAX_NR_SHARED_MSRS 4 #define MAX_NR_USER_RETURN_MSRS 4
#endif #endif
#define MAX_NR_LOADSTORE_MSRS 8 #define MAX_NR_LOADSTORE_MSRS 8
@ -35,7 +35,7 @@ struct vmx_msrs {
struct vmx_msr_entry val[MAX_NR_LOADSTORE_MSRS]; struct vmx_msr_entry val[MAX_NR_LOADSTORE_MSRS];
}; };
struct shared_msr_entry { struct vmx_uret_msr {
unsigned index; unsigned index;
u64 data; u64 data;
u64 mask; u64 mask;
@ -196,7 +196,7 @@ struct vcpu_vmx {
u32 idt_vectoring_info; u32 idt_vectoring_info;
ulong rflags; ulong rflags;
struct shared_msr_entry guest_msrs[MAX_NR_SHARED_MSRS]; struct vmx_uret_msr guest_uret_msrs[MAX_NR_USER_RETURN_MSRS];
int nmsrs; int nmsrs;
int save_nmsrs; int save_nmsrs;
bool guest_msrs_ready; bool guest_msrs_ready;
@ -329,7 +329,7 @@ bool vmx_interrupt_blocked(struct kvm_vcpu *vcpu);
bool vmx_get_nmi_mask(struct kvm_vcpu *vcpu); bool vmx_get_nmi_mask(struct kvm_vcpu *vcpu);
void vmx_set_nmi_mask(struct kvm_vcpu *vcpu, bool masked); void vmx_set_nmi_mask(struct kvm_vcpu *vcpu, bool masked);
void vmx_set_virtual_apic_mode(struct kvm_vcpu *vcpu); void vmx_set_virtual_apic_mode(struct kvm_vcpu *vcpu);
struct shared_msr_entry *find_msr_entry(struct vcpu_vmx *vmx, u32 msr); struct vmx_uret_msr *find_msr_entry(struct vcpu_vmx *vmx, u32 msr);
void pt_update_intercept_for_msr(struct vcpu_vmx *vmx); void pt_update_intercept_for_msr(struct vcpu_vmx *vmx);
void vmx_update_host_rsp(struct vcpu_vmx *vmx, unsigned long host_rsp); void vmx_update_host_rsp(struct vcpu_vmx *vmx, unsigned long host_rsp);
int vmx_find_loadstore_msr_slot(struct vmx_msrs *m, u32 msr); int vmx_find_loadstore_msr_slot(struct vmx_msrs *m, u32 msr);