From 6bfb3a715de924f8ddd4d782e2e2fdd2f5966fc7 Mon Sep 17 00:00:00 2001 From: Bibo Mao Date: Tue, 18 Mar 2025 16:48:08 +0800 Subject: [PATCH] LoongArch: KVM: Register perf callbacks for guest Add selection for GUEST_PERF_EVENTS if KVM is enabled, also add perf callback register when KVM module is loading. Signed-off-by: Bibo Mao Signed-off-by: Huacai Chen --- arch/loongarch/kvm/Kconfig | 1 + arch/loongarch/kvm/main.c | 3 +++ 2 files changed, 4 insertions(+) diff --git a/arch/loongarch/kvm/Kconfig b/arch/loongarch/kvm/Kconfig index 97a811077ac3..40eea6da7c25 100644 --- a/arch/loongarch/kvm/Kconfig +++ b/arch/loongarch/kvm/Kconfig @@ -33,6 +33,7 @@ config KVM select KVM_MMIO select KVM_XFER_TO_GUEST_WORK select SCHED_INFO + select GUEST_PERF_EVENTS if PERF_EVENTS help Support hosting virtualized guest machines using hardware virtualization extensions. You will need diff --git a/arch/loongarch/kvm/main.c b/arch/loongarch/kvm/main.c index b6864d6e5ec8..d165cd38c6bb 100644 --- a/arch/loongarch/kvm/main.c +++ b/arch/loongarch/kvm/main.c @@ -394,6 +394,7 @@ static int kvm_loongarch_env_init(void) } kvm_init_gcsr_flag(); + kvm_register_perf_callbacks(NULL); /* Register LoongArch IPI interrupt controller interface. */ ret = kvm_loongarch_register_ipi_device(); @@ -425,6 +426,8 @@ static void kvm_loongarch_env_exit(void) } kfree(kvm_loongarch_ops); } + + kvm_unregister_perf_callbacks(); } static int kvm_loongarch_init(void) -- 2.50.1