Commit 63c73aa0 authored Jan 25, 2019 by Sean Christopherson Committed by Paolo Bonzini Feb 20, 2019

KVM: VMX: Create a stack frame in vCPU-run



...in preparation for moving to a proper assembly sub-routnine.
vCPU-run isn't a leaf function since it calls vmx_update_host_rsp()
and vmx_vmenter().  And since we need to save/restore RBP anyways,
unconditionally creating the frame costs a single MOV, i.e. don't
bother keying off CONFIG_FRAME_POINTER or using FRAME_BEGIN, etc...

Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

parent c14f9dd5

arch/x86/kvm/vmx/vmx.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -6407,8 +6407,8 @@ static void __vmx_vcpu_run(struct kvm_vcpu vcpu, struct vcpu_vmx vmx)
		write_cr2(vcpu->arch.cr2);

		asm(
		/* Store host registers */
		"push %%" _ASM_BP " \n\t"
		"mov %%" _ASM_SP ", %%" _ASM_BP " \n\t"

		/*
		* Save @regs, _ASM_ARG2 may be modified by vmx_update_host_rsp() and

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