GitHub-Mirror/Star64_linux
2
0
Fork 0
mirror of https://github.com/Fishwaldo/Star64_linux.git synced 2025-07-01 11:21:51 +00:00
Code Issues Projects Releases Packages Wiki Activity Actions

x86, KVM: remove unnecessary argument to x86_virt_spec_ctrl and callers

Browse source 
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>
This commit is contained in:
Paolo Bonzini 2022-09-30 14:48:24 -04:00
parent 9f2febf3f0
commit bd3d394e36
3 changed files with 8 additions and 8 deletions
Download patch file Download diff file Expand all files Collapse all files

10
arch/x86/include/asm/spec-ctrl.h
View file

@ -13,7 +13,7 @@
* Takes the guest view of SPEC_CTRL MSR as a parameter and also * Takes the guest view of SPEC_CTRL MSR as a parameter and also
* the guest's version of VIRT_SPEC_CTRL, if emulated. * 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 * 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 * Avoids writing to the MSR if the content/bits are the same
*/ */
static inline 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 * Avoids writing to the MSR if the content/bits are the same
*/ */
static inline 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 */ /* AMD specific Speculative Store Bypass MSR data */

2
arch/x86/kernel/cpu/bugs.c
View file

@ -200,7 +200,7 @@ void __init check_bugs(void)
* MSR_IA32_SPEC_CTRL for SSBD. * MSR_IA32_SPEC_CTRL for SSBD.
*/ */
void 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; u64 guestval, hostval;
struct thread_info *ti = current_thread_info(); struct thread_info *ti = current_thread_info();

4
arch/x86/kvm/svm/svm.c
View file

@ -3984,7 +3984,7 @@ static __no_kcsan fastpath_t svm_vcpu_run(struct kvm_vcpu *vcpu)
* being speculatively taken. * being speculatively taken.
*/ */
if (!static_cpu_has(X86_FEATURE_V_SPEC_CTRL)) 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); 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); reload_tss(vcpu);
if (!static_cpu_has(X86_FEATURE_V_SPEC_CTRL)) 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)) { if (!sev_es_guest(vcpu->kvm)) {
vcpu->arch.cr2 = svm->vmcb->save.cr2; vcpu->arch.cr2 = svm->vmcb->save.cr2;