Commit d36f19e9 authored by Joerg Roedel's avatar Joerg Roedel Committed by Avi Kivity
Browse files

KVM: SVM: Remove nsvm_printk debugging code 



With all important informations now delivered through
tracepoints we can savely remove the nsvm_printk debugging
code for nested svm.

Signed-off-by: default avatarJoerg Roedel <joerg.roedel@amd.com>
Signed-off-by: default avatarMarcelo Tosatti <mtosatti@redhat.com>
parent 532a46b9

arch/x86/kvm/svm.c

+0 −34
Original line number Diff line number Diff line
@@ -53,15 +53,6 @@ MODULE_LICENSE("GPL"); 


#define DEBUGCTL_RESERVED_BITS (~(0x3fULL))



/* Turn on to get debugging output*/

/* #define NESTED_DEBUG */



#ifdef NESTED_DEBUG

#define nsvm_printk(fmt, args...) printk(KERN_INFO fmt, ## args)

#else

#define nsvm_printk(fmt, args...) do {} while(0)

#endif



static const u32 host_save_user_msrs[] = {

#ifdef CONFIG_X86_64

	MSR_STAR, MSR_LSTAR, MSR_CSTAR, MSR_SYSCALL_MASK, MSR_KERNEL_GS_BASE,
@@ -1540,14 +1531,12 @@ static int nested_svm_exit_handled(struct vcpu_svm *svm) 
	}

	default: {

		u64 exit_bits = 1ULL << (exit_code - SVM_EXIT_INTR);

		nsvm_printk("exit code: 0x%x\n", exit_code);

		if (svm->nested.intercept & exit_bits)

			vmexit = NESTED_EXIT_DONE;

	}

	}



	if (vmexit == NESTED_EXIT_DONE) {

		nsvm_printk("#VMEXIT reason=%04x\n", exit_code);

		nested_svm_vmexit(svm);

	}
@@ -1658,10 +1647,6 @@ static int nested_svm_vmexit(struct vcpu_svm *svm) 
	/* Restore the original control entries */

	copy_vmcb_control_area(vmcb, hsave);



	/* Kill any pending exceptions */

	if (svm->vcpu.arch.exception.pending == true)

		nsvm_printk("WARNING: Pending Exception\n");



	kvm_clear_exception_queue(&svm->vcpu);

	kvm_clear_interrupt_queue(&svm->vcpu);
@@ -1826,25 +1811,14 @@ static bool nested_svm_vmrun(struct vcpu_svm *svm) 


	force_new_asid(&svm->vcpu);

	svm->vmcb->control.int_ctl = nested_vmcb->control.int_ctl | V_INTR_MASKING_MASK;

	if (nested_vmcb->control.int_ctl & V_IRQ_MASK) {

		nsvm_printk("nSVM Injecting Interrupt: 0x%x\n",

				nested_vmcb->control.int_ctl);

	}

	if (nested_vmcb->control.int_ctl & V_INTR_MASKING_MASK)

		svm->vcpu.arch.hflags |= HF_VINTR_MASK;

	else

		svm->vcpu.arch.hflags &= ~HF_VINTR_MASK;



	nsvm_printk("nSVM exit_int_info: 0x%x | int_state: 0x%x\n",

			nested_vmcb->control.exit_int_info,

			nested_vmcb->control.int_state);



	svm->vmcb->control.int_vector = nested_vmcb->control.int_vector;

	svm->vmcb->control.int_state = nested_vmcb->control.int_state;

	svm->vmcb->control.tsc_offset += nested_vmcb->control.tsc_offset;

	if (nested_vmcb->control.event_inj & SVM_EVTINJ_VALID)

		nsvm_printk("Injecting Event: 0x%x\n",

				nested_vmcb->control.event_inj);

	svm->vmcb->control.event_inj = nested_vmcb->control.event_inj;

	svm->vmcb->control.event_inj_err = nested_vmcb->control.event_inj_err;
@@ -1913,8 +1887,6 @@ static int vmsave_interception(struct vcpu_svm *svm) 


static int vmrun_interception(struct vcpu_svm *svm)

{

	nsvm_printk("VMrun\n");



	if (nested_svm_check_permissions(svm))

		return 1;
@@ -1974,7 +1946,6 @@ static int clgi_interception(struct vcpu_svm *svm) 
static int invlpga_interception(struct vcpu_svm *svm)

{

	struct kvm_vcpu *vcpu = &svm->vcpu;

	nsvm_printk("INVLPGA\n");



	trace_kvm_invlpga(svm->vmcb->save.rip, vcpu->arch.regs[VCPU_REGS_RCX],

			  vcpu->arch.regs[VCPU_REGS_RAX]);
@@ -2389,10 +2360,6 @@ static int handle_exit(struct kvm_vcpu *vcpu) 
					svm->vmcb->control.exit_int_info,

					svm->vmcb->control.exit_int_info_err);



		nsvm_printk("nested handle_exit: 0x%x | 0x%lx | 0x%lx | 0x%lx\n",

			    exit_code, svm->vmcb->control.exit_info_1,

			    svm->vmcb->control.exit_info_2, svm->vmcb->save.rip);



		vmexit = nested_svm_exit_special(svm);



		if (vmexit == NESTED_EXIT_CONTINUE)
@@ -2539,7 +2506,6 @@ static int svm_interrupt_allowed(struct kvm_vcpu *vcpu) 
static void enable_irq_window(struct kvm_vcpu *vcpu)

{

	struct vcpu_svm *svm = to_svm(vcpu);

	nsvm_printk("Trying to open IRQ window\n");



	nested_svm_intr(svm);