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Peter Anvin" , linux-riscv@lists.infradead.org, Jiri Olsa , kvmarm@lists.cs.columbia.edu, Stefano Stabellini , Joerg Roedel , linux-csky@vger.kernel.org, xen-devel@lists.xenproject.org, Zhu Lingshan , Namhyung Kim , Artem Kashkanov , linux-arm-kernel@lists.infradead.org, Jim Mattson , Like Xu , Sean Christopherson , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, Vitaly Kuznetsov X-BeenThere: kvmarm@lists.cs.columbia.edu X-Mailman-Version: 2.1.14 Precedence: list Reply-To: Sean Christopherson List-Id: Where KVM/ARM decisions are made List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: kvmarm-bounces@lists.cs.columbia.edu Sender: kvmarm-bounces@lists.cs.columbia.edu Now that all state needed for VMX's PT interrupt handler is exposed to vmx.c (specifically the currently running vCPU), move the handler into vmx.c where it belongs. Signed-off-by: Sean Christopherson --- arch/x86/include/asm/kvm_host.h | 1 - arch/x86/kvm/vmx/vmx.c | 24 +++++++++++++++++++++--- arch/x86/kvm/x86.c | 17 ----------------- virt/kvm/kvm_main.c | 1 + 4 files changed, 22 insertions(+), 21 deletions(-) diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h index 63553a1f43ee..daa33147650a 100644 --- a/arch/x86/include/asm/kvm_host.h +++ b/arch/x86/include/asm/kvm_host.h @@ -1496,7 +1496,6 @@ struct kvm_x86_init_ops { int (*disabled_by_bios)(void); int (*check_processor_compatibility)(void); int (*hardware_setup)(void); - bool (*intel_pt_intr_in_guest)(void); struct kvm_x86_ops *runtime_ops; }; diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index f08980ef7c44..4665a272249a 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -7535,6 +7535,8 @@ static void vmx_migrate_timers(struct kvm_vcpu *vcpu) static void hardware_unsetup(void) { + kvm_set_intel_pt_intr_handler(NULL); + if (nested) nested_vmx_hardware_unsetup(); @@ -7685,6 +7687,18 @@ static struct kvm_x86_ops vmx_x86_ops __initdata = { .vcpu_deliver_sipi_vector = kvm_vcpu_deliver_sipi_vector, }; +static void vmx_handle_intel_pt_intr(void) +{ + struct kvm_vcpu *vcpu = kvm_get_running_vcpu(); + + if (WARN_ON_ONCE(!vcpu)) + return; + + kvm_make_request(KVM_REQ_PMI, vcpu); + __set_bit(MSR_CORE_PERF_GLOBAL_OVF_CTRL_TRACE_TOPA_PMI_BIT, + (unsigned long *)&vcpu->arch.pmu.global_status); +} + static __init void vmx_setup_user_return_msrs(void) { @@ -7886,9 +7900,14 @@ static __init int hardware_setup(void) vmx_set_cpu_caps(); r = alloc_kvm_area(); - if (r) + if (r) { nested_vmx_hardware_unsetup(); - return r; + return r; + } + + if (pt_mode == PT_MODE_HOST_GUEST) + kvm_set_intel_pt_intr_handler(vmx_handle_intel_pt_intr); + return 0; } static struct kvm_x86_init_ops vmx_init_ops __initdata = { @@ -7896,7 +7915,6 @@ static struct kvm_x86_init_ops vmx_init_ops __initdata = { .disabled_by_bios = vmx_disabled_by_bios, .check_processor_compatibility = vmx_check_processor_compat, .hardware_setup = hardware_setup, - .intel_pt_intr_in_guest = vmx_pt_mode_is_host_guest, .runtime_ops = &vmx_x86_ops, }; diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index 7cb0f04e24ee..11c7a02f839c 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -8264,18 +8264,6 @@ static void kvm_timer_init(void) kvmclock_cpu_online, kvmclock_cpu_down_prep); } -static void kvm_handle_intel_pt_intr(void) -{ - struct kvm_vcpu *vcpu = kvm_get_running_vcpu(); - - if (WARN_ON_ONCE(!vcpu)) - return; - - kvm_make_request(KVM_REQ_PMI, vcpu); - __set_bit(MSR_CORE_PERF_GLOBAL_OVF_CTRL_TRACE_TOPA_PMI_BIT, - (unsigned long *)&vcpu->arch.pmu.global_status); -} - #ifdef CONFIG_X86_64 static void pvclock_gtod_update_fn(struct work_struct *work) { @@ -11029,9 +11017,6 @@ int kvm_arch_hardware_setup(void *opaque) memcpy(&kvm_x86_ops, ops->runtime_ops, sizeof(kvm_x86_ops)); kvm_ops_static_call_update(); - if (ops->intel_pt_intr_in_guest && ops->intel_pt_intr_in_guest()) - kvm_set_intel_pt_intr_handler(kvm_handle_intel_pt_intr); - if (!kvm_cpu_cap_has(X86_FEATURE_XSAVES)) supported_xss = 0; @@ -11059,8 +11044,6 @@ int kvm_arch_hardware_setup(void *opaque) void kvm_arch_hardware_unsetup(void) { - kvm_set_intel_pt_intr_handler(NULL); - static_call(kvm_x86_hardware_unsetup)(); } diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 13c4f58a75e5..e0b1c9386926 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -5498,6 +5498,7 @@ void kvm_set_intel_pt_intr_handler(void (*handler)(void)) { kvm_guest_cbs.handle_intel_pt_intr = handler; } +EXPORT_SYMBOL_GPL(kvm_set_intel_pt_intr_handler); void kvm_register_perf_callbacks(void) { -- 2.33.0.259.gc128427fd7-goog _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm