From patchwork Tue Dec 5 10:50:21 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Li, Xin3" X-Patchwork-Id: 13480067 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 lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 56618C4167B for ; Tue, 5 Dec 2023 11:29:07 +0000 (UTC) Received: from list by lists.xenproject.org with outflank-mailman.647615.1011050 (Exim 4.92) (envelope-from ) id 1rATbV-0000pp-F5; Tue, 05 Dec 2023 11:28:41 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 647615.1011050; Tue, 05 Dec 2023 11:28:41 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1rATbV-0000pi-C7; Tue, 05 Dec 2023 11:28:41 +0000 Received: by outflank-mailman (input) for mailman id 647615; Tue, 05 Dec 2023 11:28:39 +0000 Received: from se1-gles-flk1-in.inumbo.com ([94.247.172.50] helo=se1-gles-flk1.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1rATUs-0003dP-Vc for xen-devel@lists.xenproject.org; Tue, 05 Dec 2023 11:21:50 +0000 Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.12]) by se1-gles-flk1.inumbo.com (Halon) with ESMTPS id 74fddc09-9360-11ee-9b0f-b553b5be7939; Tue, 05 Dec 2023 12:21:38 +0100 (CET) Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by orvoesa104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 05 Dec 2023 03:21:27 -0800 Received: from unknown (HELO fred..) ([172.25.112.68]) by fmsmga006.fm.intel.com with ESMTP; 05 Dec 2023 03:21:26 -0800 X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 74fddc09-9360-11ee-9b0f-b553b5be7939 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1701775299; x=1733311299; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=SQLskgfezeMmMUQK7hRm+in8U5EG93C8+IUmjWFkZJ4=; b=e6dqYL2826IKDf354zom8O6hrtYqB09fZZhDZIqkWFX1rlYbJVrlwiti iFkpfDFIJDDx/a8dgAEsOyVGmQuwDU8/D+ZTIvW3ZGA0gpXiKZGzb1zAf Y3JoQfkni4RefPsaA9KlrAz+TMABWNDR80dQZAwdk0E9c+pxeOX8AQuWj 4o7MkVMiK8nf9BKhZqs7zG/FtH+ZWyZZP4SiaR8ghxE5/qdqfy0aIMF6b 3C1BojI+Cqq1oW4wwZv7GU91ZVfr6tfj7H9t8KpNCJNlDczMTtRdJIOKd 9/qv7LMcXHbRDCnNXDKU8T0AtCenDZjv3bwqSjV9SWl4S9mrJX4ty5KZM g==; X-IronPort-AV: E=McAfee;i="6600,9927,10914"; a="942695" X-IronPort-AV: E=Sophos;i="6.04,252,1695711600"; d="scan'208";a="942695" X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10914"; a="1018193012" X-IronPort-AV: E=Sophos;i="6.04,252,1695711600"; d="scan'208";a="1018193012" 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, shan.kang@intel.com Subject: [PATCH v13 32/35] KVM: VMX: Call fred_entry_from_kvm() for IRQ/NMI handling Date: Tue, 5 Dec 2023 02:50:21 -0800 Message-ID: <20231205105030.8698-33-xin3.li@intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20231205105030.8698-1-xin3.li@intel.com> References: <20231205105030.8698-1-xin3.li@intel.com> MIME-Version: 1.0 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 be20a60047b1..ba5cd26137e0 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); }