Commit c067847c authored by Andrew Donnellan's avatar Andrew Donnellan Committed by Janosch Frank
Browse files

KVM: s390: Add signal_exits counter 



Add a signal_exits counter for s390, as exists on arm64, loongarch, mips,
powerpc, riscv and x86.

This is used by kvm_handle_signal_exit(), which we will use when we
later enable CONFIG_VIRT_XFER_TO_GUEST_WORK.

Signed-off-by: default avatarAndrew Donnellan <ajd@linux.ibm.com>
Reviewed-by: default avatarJanosch Frank <frankja@linux.ibm.com>
Signed-off-by: default avatarJanosch Frank <frankja@linux.ibm.com>
parent 44acac00

arch/s390/include/asm/kvm_host.h

+1 −0
Original line number Diff line number Diff line
@@ -146,6 +146,7 @@ struct kvm_vcpu_stat { 
	u64 instruction_diagnose_500;

	u64 instruction_diagnose_other;

	u64 pfault_sync;

	u64 signal_exits;

};



#define PGM_OPERATION			0x01

arch/s390/kvm/kvm-s390.c

+3 −1
Original line number Diff line number Diff line
@@ -185,7 +185,8 @@ const struct _kvm_stats_desc kvm_vcpu_stats_desc[] = { 
	STATS_DESC_COUNTER(VCPU, instruction_diagnose_308),

	STATS_DESC_COUNTER(VCPU, instruction_diagnose_500),

	STATS_DESC_COUNTER(VCPU, instruction_diagnose_other),

	STATS_DESC_COUNTER(VCPU, pfault_sync)

	STATS_DESC_COUNTER(VCPU, pfault_sync),

	STATS_DESC_COUNTER(VCPU, signal_exits)

};



const struct kvm_stats_header kvm_vcpu_stats_header = {
@@ -5251,6 +5252,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu) 


	if (signal_pending(current) && !rc) {

		kvm_run->exit_reason = KVM_EXIT_INTR;

		vcpu->stat.signal_exits++;

		rc = -EINTR;

	}