From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.6 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 57BAFC4338F for ; Sun, 15 Aug 2021 00:15:16 +0000 (UTC) Received: from mm01.cs.columbia.edu (mm01.cs.columbia.edu [128.59.11.253]) by mail.kernel.org (Postfix) with ESMTP id 0796160F51 for ; Sun, 15 Aug 2021 00:15:16 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 0796160F51 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=lists.cs.columbia.edu Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id A7DD640825; Sat, 14 Aug 2021 20:15:15 -0400 (EDT) X-Virus-Scanned: at lists.cs.columbia.edu Authentication-Results: mm01.cs.columbia.edu (amavisd-new); dkim=softfail (fail, message has been altered) header.i=@redhat.com Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id zf9ROnZ90Fyd; Sat, 14 Aug 2021 20:15:11 -0400 (EDT) Received: from mm01.cs.columbia.edu (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id D29F94B086; Sat, 14 Aug 2021 20:15:10 -0400 (EDT) Received: from localhost (localhost [127.0.0.1]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 6D4C54B0B5 for ; Sat, 14 Aug 2021 20:15:09 -0400 (EDT) X-Virus-Scanned: at lists.cs.columbia.edu Received: from mm01.cs.columbia.edu ([127.0.0.1]) by localhost (mm01.cs.columbia.edu [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id MBQfi6NfX46R for ; Sat, 14 Aug 2021 20:15:08 -0400 (EDT) Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by mm01.cs.columbia.edu (Postfix) with ESMTP id 922F04B0D2 for ; Sat, 14 Aug 2021 20:15:06 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1628986506; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=qv6I3logkEqrFKBHAcTSKZ8CXuHzBhGguNUvVqUgdvc=; b=DnfVIoDscgVZjE1AvZltH4+NaEtSN/v37wH22YLuCy8w83BqWZ6U6V4VxioSVXZ4SVgE15 6jPwksxR1wZ84NH0chyc+fUSP5jrmnDrnwwfnlZHbQKX5OTxm/AgWY5IzxtkLb5mebOp8u k6IGau+yYEMBH6Pe5LscgO92oGYqmJQ= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-362-v2DHF4anNjSj-4gai3M0qA-1; Sat, 14 Aug 2021 20:15:05 -0400 X-MC-Unique: v2DHF4anNjSj-4gai3M0qA-1 Received: from smtp.corp.redhat.com (int-mx07.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id C6952801B3D; Sun, 15 Aug 2021 00:15:03 +0000 (UTC) Received: from gshan.redhat.com (vpn2-54-103.bne.redhat.com [10.64.54.103]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 7FA5710016FF; Sun, 15 Aug 2021 00:15:00 +0000 (UTC) From: Gavin Shan To: kvmarm@lists.cs.columbia.edu Subject: [PATCH v4 10/21] KVM: arm64: Support SDEI_EVENT_ROUTING_SET hypercall Date: Sun, 15 Aug 2021 08:13:41 +0800 Message-Id: <20210815001352.81927-11-gshan@redhat.com> In-Reply-To: <20210815001352.81927-1-gshan@redhat.com> References: <20210815001352.81927-1-gshan@redhat.com> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.84 on 10.5.11.22 Cc: maz@kernel.org, linux-kernel@vger.kernel.org, Jonathan.Cameron@huawei.com, pbonzini@redhat.com, will@kernel.org X-BeenThere: kvmarm@lists.cs.columbia.edu X-Mailman-Version: 2.1.14 Precedence: list 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 This supports SDEI_EVENT_ROUTING_SET hypercall. It's used by the guest to set route mode and affinity for the registered KVM event. It's only valid for the shared events. It's not allowed to do so when the corresponding event has been raised to the guest. Signed-off-by: Gavin Shan --- arch/arm64/kvm/sdei.c | 64 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 64 insertions(+) diff --git a/arch/arm64/kvm/sdei.c b/arch/arm64/kvm/sdei.c index 5dfa74b093f1..458695c2394f 100644 --- a/arch/arm64/kvm/sdei.c +++ b/arch/arm64/kvm/sdei.c @@ -489,6 +489,68 @@ static unsigned long kvm_sdei_hypercall_info(struct kvm_vcpu *vcpu) return ret; } +static unsigned long kvm_sdei_hypercall_route(struct kvm_vcpu *vcpu) +{ + struct kvm *kvm = vcpu->kvm; + struct kvm_sdei_kvm *ksdei = kvm->arch.sdei; + struct kvm_sdei_vcpu *vsdei = vcpu->arch.sdei; + struct kvm_sdei_event *kse = NULL; + struct kvm_sdei_kvm_event *kske = NULL; + unsigned long event_num = smccc_get_arg1(vcpu); + unsigned long route_mode = smccc_get_arg2(vcpu); + unsigned long route_affinity = smccc_get_arg3(vcpu); + int index = 0; + unsigned long ret = SDEI_SUCCESS; + + /* Sanity check */ + if (!(ksdei && vsdei)) { + ret = SDEI_NOT_SUPPORTED; + goto out; + } + + if (!kvm_sdei_is_valid_event_num(event_num)) { + ret = SDEI_INVALID_PARAMETERS; + goto out; + } + + if (!(route_mode == SDEI_EVENT_REGISTER_RM_ANY || + route_mode == SDEI_EVENT_REGISTER_RM_PE)) { + ret = SDEI_INVALID_PARAMETERS; + goto out; + } + + /* Check if the KVM event has been registered */ + spin_lock(&ksdei->lock); + kske = kvm_sdei_find_kvm_event(kvm, event_num); + if (!kske) { + ret = SDEI_INVALID_PARAMETERS; + goto unlock; + } + + /* Validate KVM event state */ + kse = kske->kse; + if (kse->state.type != SDEI_EVENT_TYPE_SHARED) { + ret = SDEI_INVALID_PARAMETERS; + goto unlock; + } + + if (!kvm_sdei_is_registered(kske, index) || + kvm_sdei_is_enabled(kske, index) || + kske->state.refcount) { + ret = SDEI_DENIED; + goto unlock; + } + + /* Update state */ + kske->state.route_mode = route_mode; + kske->state.route_affinity = route_affinity; + +unlock: + spin_unlock(&ksdei->lock); +out: + return ret; +} + int kvm_sdei_hypercall(struct kvm_vcpu *vcpu) { u32 func = smccc_get_function(vcpu); @@ -523,6 +585,8 @@ int kvm_sdei_hypercall(struct kvm_vcpu *vcpu) ret = kvm_sdei_hypercall_info(vcpu); break; case SDEI_1_0_FN_SDEI_EVENT_ROUTING_SET: + ret = kvm_sdei_hypercall_route(vcpu); + break; case SDEI_1_0_FN_SDEI_PE_MASK: case SDEI_1_0_FN_SDEI_PE_UNMASK: case SDEI_1_0_FN_SDEI_INTERRUPT_BIND: -- 2.23.0 _______________________________________________ kvmarm mailing list kvmarm@lists.cs.columbia.edu https://lists.cs.columbia.edu/mailman/listinfo/kvmarm