diff options
Diffstat (limited to 'arch/x86/kvm/vmx')
| -rw-r--r-- | arch/x86/kvm/vmx/nested.c | 5 | ||||
| -rw-r--r-- | arch/x86/kvm/vmx/vmx.c | 3 | ||||
| -rw-r--r-- | arch/x86/kvm/vmx/vmx_ops.h | 18 |
3 files changed, 14 insertions, 12 deletions
diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c index d06e50d9c0e7..5504d9e9fd32 100644 --- a/arch/x86/kvm/vmx/nested.c +++ b/arch/x86/kvm/vmx/nested.c @@ -5329,9 +5329,8 @@ static int enter_vmx_operation(struct kvm_vcpu *vcpu) if (enable_shadow_vmcs && !alloc_shadow_vmcs(vcpu)) goto out_shadow_vmcs; - hrtimer_init(&vmx->nested.preemption_timer, CLOCK_MONOTONIC, - HRTIMER_MODE_ABS_PINNED); - vmx->nested.preemption_timer.function = vmx_preemption_timer_fn; + hrtimer_setup(&vmx->nested.preemption_timer, vmx_preemption_timer_fn, CLOCK_MONOTONIC, + HRTIMER_MODE_ABS_PINNED); vmx->nested.vpid02 = allocate_vpid(); diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index b70ed72c1783..5c5766467a61 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -1477,7 +1477,8 @@ void vmx_vcpu_load_vmcs(struct kvm_vcpu *vcpu, int cpu, * performs IBPB on nested VM-Exit (a single nested transition * may switch the active VMCS multiple times). */ - if (!buddy || WARN_ON_ONCE(buddy->vmcs != prev)) + if (static_branch_likely(&switch_vcpu_ibpb) && + (!buddy || WARN_ON_ONCE(buddy->vmcs != prev))) indirect_branch_prediction_barrier(); } diff --git a/arch/x86/kvm/vmx/vmx_ops.h b/arch/x86/kvm/vmx/vmx_ops.h index 633c87e2fd92..96677576c836 100644 --- a/arch/x86/kvm/vmx/vmx_ops.h +++ b/arch/x86/kvm/vmx/vmx_ops.h @@ -118,7 +118,7 @@ do_exception: #else /* !CONFIG_CC_HAS_ASM_GOTO_OUTPUT */ - asm volatile("1: vmread %2, %1\n\t" + asm volatile("1: vmread %[field], %[output]\n\t" ".byte 0x3e\n\t" /* branch taken hint */ "ja 3f\n\t" @@ -127,24 +127,26 @@ do_exception: * @field, and bounce through the trampoline to preserve * volatile registers. */ - "xorl %k1, %k1\n\t" + "xorl %k[output], %k[output]\n\t" "2:\n\t" - "push %1\n\t" - "push %2\n\t" + "push %[output]\n\t" + "push %[field]\n\t" "call vmread_error_trampoline\n\t" /* * Unwind the stack. Note, the trampoline zeros out the * memory for @fault so that the result is '0' on error. */ - "pop %2\n\t" - "pop %1\n\t" + "pop %[field]\n\t" + "pop %[output]\n\t" "3:\n\t" /* VMREAD faulted. As above, except push '1' for @fault. */ - _ASM_EXTABLE_TYPE_REG(1b, 2b, EX_TYPE_ONE_REG, %1) + _ASM_EXTABLE_TYPE_REG(1b, 2b, EX_TYPE_ONE_REG, %[output]) - : ASM_CALL_CONSTRAINT, "=&r"(value) : "r"(field) : "cc"); + : ASM_CALL_CONSTRAINT, [output] "=&r" (value) + : [field] "r" (field) + : "cc"); return value; #endif /* CONFIG_CC_HAS_ASM_GOTO_OUTPUT */ |