From patchwork Sat Sep 23 09:42:09 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Li, Xin3" X-Patchwork-Id: 13396706 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5EFB7CE7A88 for ; Sat, 23 Sep 2023 10:15:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231361AbjIWKPn (ORCPT ); Sat, 23 Sep 2023 06:15:43 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:40822 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231713AbjIWKPZ (ORCPT ); Sat, 23 Sep 2023 06:15:25 -0400 Received: from mgamail.intel.com (mgamail.intel.com [134.134.136.100]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4114910C1; Sat, 23 Sep 2023 03:12:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1695463920; x=1726999920; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=MZgokrEaX/IcaX3hD6O7bYEAIXqVjdzkrr/jdEXzfh8=; b=cqZIw/GH/2210S2Zzg56rpU4JD+tvIVoft0VnGbzfvZj6nYlJbBnZsjb EdECRi2YzccxaRkXbG5w0xYrZkWyHPDScax6AfFTk+YOkw0Le/jhcBVSR dJnO2GVJ3jw5rcppjdwMfISE5+bUtm7dGC2n5Ji24YGiWoKIK1WDYKev9 mf7bPlSf1K0Gld7ZhUrXL3uYkJHK5ZejgdWBDMVtTVcjI7rwaXNrw/5nU 4a3K5oXI02LtAeYDegd74LHSwi6emEl+io1g23YJePz59ebxmI3MXn/Ei S7Vi69C+VHo8fT0m5azS/EeN9Fv1CseT/OM1mdGlquCsG4RpWCPP+YKDc A==; X-IronPort-AV: E=McAfee;i="6600,9927,10841"; a="447492485" X-IronPort-AV: E=Sophos;i="6.03,171,1694761200"; d="scan'208";a="447492485" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Sep 2023 03:11:53 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10841"; a="813388225" X-IronPort-AV: E=Sophos;i="6.03,171,1694761200"; d="scan'208";a="813388225" Received: from unknown (HELO fred..) ([172.25.112.68]) by fmsmga008.fm.intel.com with ESMTP; 23 Sep 2023 03:11:52 -0700 From: Xin Li To: linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-edac@vger.kernel.org, linux-hyperv@vger.kernel.org, kvm@vger.kernel.org, xen-devel@lists.xenproject.org Cc: tglx@linutronix.de, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, luto@kernel.org, pbonzini@redhat.com, seanjc@google.com, peterz@infradead.org, jgross@suse.com, ravi.v.shankar@intel.com, mhiramat@kernel.org, andrew.cooper3@citrix.com, jiangshanlai@gmail.com, nik.borisov@suse.com Subject: [PATCH v11 34/37] KVM: VMX: Call fred_entry_from_kvm() for IRQ/NMI handling Date: Sat, 23 Sep 2023 02:42:09 -0700 Message-Id: <20230923094212.26520-35-xin3.li@intel.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230923094212.26520-1-xin3.li@intel.com> References: <20230923094212.26520-1-xin3.li@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-edac@vger.kernel.org When FRED is enabled, call fred_entry_from_kvm() to handle IRQ/NMI in IRQ/NMI induced VM exits. Tested-by: Shan Kang Signed-off-by: Xin Li Acked-by: Paolo Bonzini --- arch/x86/kvm/vmx/vmx.c | 12 +++++++++--- 1 file changed, 9 insertions(+), 3 deletions(-) diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c index 72e3943f3693..db55b8418fa3 100644 --- a/arch/x86/kvm/vmx/vmx.c +++ b/arch/x86/kvm/vmx/vmx.c @@ -38,6 +38,7 @@ #include #include #include +#include #include #include #include @@ -6962,14 +6963,16 @@ static void handle_external_interrupt_irqoff(struct kvm_vcpu *vcpu) { u32 intr_info = vmx_get_intr_info(vcpu); unsigned int vector = intr_info & INTR_INFO_VECTOR_MASK; - gate_desc *desc = (gate_desc *)host_idt_base + vector; if (KVM_BUG(!is_external_intr(intr_info), vcpu->kvm, "unexpected VM-Exit interrupt info: 0x%x", intr_info)) return; kvm_before_interrupt(vcpu, KVM_HANDLING_IRQ); - vmx_do_interrupt_irqoff(gate_offset(desc)); + if (cpu_feature_enabled(X86_FEATURE_FRED)) + fred_entry_from_kvm(EVENT_TYPE_EXTINT, vector); + else + vmx_do_interrupt_irqoff(gate_offset((gate_desc *)host_idt_base + vector)); kvm_after_interrupt(vcpu); vcpu->arch.at_instruction_boundary = true; @@ -7262,7 +7265,10 @@ static noinstr void vmx_vcpu_enter_exit(struct kvm_vcpu *vcpu, if ((u16)vmx->exit_reason.basic == EXIT_REASON_EXCEPTION_NMI && is_nmi(vmx_get_intr_info(vcpu))) { kvm_before_interrupt(vcpu, KVM_HANDLING_NMI); - vmx_do_nmi_irqoff(); + if (cpu_feature_enabled(X86_FEATURE_FRED)) + fred_entry_from_kvm(EVENT_TYPE_NMI, NMI_VECTOR); + else + vmx_do_nmi_irqoff(); kvm_after_interrupt(vcpu); }