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authorPaolo Bonzini <pbonzini@redhat.com>2022-09-30 14:48:24 -0400
committerPaolo Bonzini <pbonzini@redhat.com>2022-11-09 12:26:51 -0500
commitbd3d394e367e66e773a6cb25a82c29b04464230b (patch)
treeb4524496afdfb62101883e158e8244b21b22864a
parent9f2febf3f04daebdaaa5a43cfa20e3844905c0f9 (diff)
downloadlinux-bd3d394e367e66e773a6cb25a82c29b04464230b.tar.bz2
x86, KVM: remove unnecessary argument to x86_virt_spec_ctrl and callers
x86_virt_spec_ctrl only deals with the paravirtualized MSR_IA32_VIRT_SPEC_CTRL now and does not handle MSR_IA32_SPEC_CTRL anymore; remove the corresponding, unused argument. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
-rw-r--r--arch/x86/include/asm/spec-ctrl.h10
-rw-r--r--arch/x86/kernel/cpu/bugs.c2
-rw-r--r--arch/x86/kvm/svm/svm.c4
3 files changed, 8 insertions, 8 deletions
diff --git a/arch/x86/include/asm/spec-ctrl.h b/arch/x86/include/asm/spec-ctrl.h
index 5393babc0598..cb0386fc4dc3 100644
--- a/arch/x86/include/asm/spec-ctrl.h
+++ b/arch/x86/include/asm/spec-ctrl.h
@@ -13,7 +13,7 @@
* Takes the guest view of SPEC_CTRL MSR as a parameter and also
* the guest's version of VIRT_SPEC_CTRL, if emulated.
*/
-extern void x86_virt_spec_ctrl(u64 guest_spec_ctrl, u64 guest_virt_spec_ctrl, bool guest);
+extern void x86_virt_spec_ctrl(u64 guest_virt_spec_ctrl, bool guest);
/**
* x86_spec_ctrl_set_guest - Set speculation control registers for the guest
@@ -24,9 +24,9 @@ extern void x86_virt_spec_ctrl(u64 guest_spec_ctrl, u64 guest_virt_spec_ctrl, bo
* Avoids writing to the MSR if the content/bits are the same
*/
static inline
-void x86_spec_ctrl_set_guest(u64 guest_spec_ctrl, u64 guest_virt_spec_ctrl)
+void x86_spec_ctrl_set_guest(u64 guest_virt_spec_ctrl)
{
- x86_virt_spec_ctrl(guest_spec_ctrl, guest_virt_spec_ctrl, true);
+ x86_virt_spec_ctrl(guest_virt_spec_ctrl, true);
}
/**
@@ -38,9 +38,9 @@ void x86_spec_ctrl_set_guest(u64 guest_spec_ctrl, u64 guest_virt_spec_ctrl)
* Avoids writing to the MSR if the content/bits are the same
*/
static inline
-void x86_spec_ctrl_restore_host(u64 guest_spec_ctrl, u64 guest_virt_spec_ctrl)
+void x86_spec_ctrl_restore_host(u64 guest_virt_spec_ctrl)
{
- x86_virt_spec_ctrl(guest_spec_ctrl, guest_virt_spec_ctrl, false);
+ x86_virt_spec_ctrl(guest_virt_spec_ctrl, false);
}
/* AMD specific Speculative Store Bypass MSR data */
diff --git a/arch/x86/kernel/cpu/bugs.c b/arch/x86/kernel/cpu/bugs.c
index 6ec0b7ce7453..3e3230cccaa7 100644
--- a/arch/x86/kernel/cpu/bugs.c
+++ b/arch/x86/kernel/cpu/bugs.c
@@ -200,7 +200,7 @@ void __init check_bugs(void)
* MSR_IA32_SPEC_CTRL for SSBD.
*/
void
-x86_virt_spec_ctrl(u64 guest_spec_ctrl, u64 guest_virt_spec_ctrl, bool setguest)
+x86_virt_spec_ctrl(u64 guest_virt_spec_ctrl, bool setguest)
{
u64 guestval, hostval;
struct thread_info *ti = current_thread_info();
diff --git a/arch/x86/kvm/svm/svm.c b/arch/x86/kvm/svm/svm.c
index cf1aed25f4ab..9f88c8e6766e 100644
--- a/arch/x86/kvm/svm/svm.c
+++ b/arch/x86/kvm/svm/svm.c
@@ -3984,7 +3984,7 @@ static __no_kcsan fastpath_t svm_vcpu_run(struct kvm_vcpu *vcpu)
* being speculatively taken.
*/
if (!static_cpu_has(X86_FEATURE_V_SPEC_CTRL))
- x86_spec_ctrl_set_guest(svm->spec_ctrl, svm->virt_spec_ctrl);
+ x86_spec_ctrl_set_guest(svm->virt_spec_ctrl);
svm_vcpu_enter_exit(vcpu, spec_ctrl_intercepted);
@@ -3992,7 +3992,7 @@ static __no_kcsan fastpath_t svm_vcpu_run(struct kvm_vcpu *vcpu)
reload_tss(vcpu);
if (!static_cpu_has(X86_FEATURE_V_SPEC_CTRL))
- x86_spec_ctrl_restore_host(svm->spec_ctrl, svm->virt_spec_ctrl);
+ x86_spec_ctrl_restore_host(svm->virt_spec_ctrl);
if (!sev_es_guest(vcpu->kvm)) {
vcpu->arch.cr2 = svm->vmcb->save.cr2;