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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 5ACCDC433F5 for ; Tue, 22 Mar 2022 08:09:59 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230083AbiCVILX (ORCPT ); Tue, 22 Mar 2022 04:11:23 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55872 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229995AbiCVILQ (ORCPT ); Tue, 22 Mar 2022 04:11:16 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 0308BB7EB for ; Tue, 22 Mar 2022 01:09:47 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1647936587; 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=KDBG9hheIqOVlljCf2sb5fT6Csq9yFBt9fZvXIcLh5A=; b=LFYC2VGEFThpNRS6KuFWp2LDatyHp/mIWZdo9tv+ZBCIaAqheRwi7v+gkAdolWYmSq0Lly 5y+dpDLjUtBUZQn8qqAFZ3Ox5HfFxrjFClexzngv0g4fB77Zd+m+zh6tEqjKcBqfV0kUjr t9zGP2gwQhGsrsMfURr3cvbiGSzBdi8= Received: from mimecast-mx02.redhat.com (mimecast-mx02.redhat.com [66.187.233.88]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-19-fw8RiBStPEioOqaJUno_BA-1; Tue, 22 Mar 2022 04:09:43 -0400 X-MC-Unique: fw8RiBStPEioOqaJUno_BA-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.rdu2.redhat.com [10.11.54.3]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx02.redhat.com (Postfix) with ESMTPS id 4B6FB85A5BC; Tue, 22 Mar 2022 08:09:43 +0000 (UTC) Received: from gshan.redhat.com (ovpn-12-33.pek2.redhat.com [10.72.12.33]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 5D33F1121324; Tue, 22 Mar 2022 08:09:33 +0000 (UTC) From: Gavin Shan To: kvmarm@lists.cs.columbia.edu Cc: linux-kernel@vger.kernel.org, eauger@redhat.com, shannon.zhaosl@gmail.com, maz@kernel.org, Jonathan.Cameron@huawei.com, will@kernel.org, pbonzini@redhat.com, james.morse@arm.com, mark.rutland@arm.com, drjones@redhat.com, vkuznets@redhat.com, shan.gavin@gmail.com Subject: [PATCH v5 12/22] KVM: arm64: Support SDEI_{PRIVATE, SHARED}_RESET Date: Tue, 22 Mar 2022 16:07:00 +0800 Message-Id: <20220322080710.51727-13-gshan@redhat.com> In-Reply-To: <20220322080710.51727-1-gshan@redhat.com> References: <20220322080710.51727-1-gshan@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.78 on 10.11.54.3 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This supports SDEI_{PRIVATE, SHARED}_RESET. They are used by the guest to reset the private events on the calling vCPU or the shared events on all vCPUs. Signed-off-by: Gavin Shan --- arch/arm64/kvm/sdei.c | 31 +++++++++++++++++++++++++++++++ 1 file changed, 31 insertions(+) diff --git a/arch/arm64/kvm/sdei.c b/arch/arm64/kvm/sdei.c index b2a916724cfa..0dec35a0eed1 100644 --- a/arch/arm64/kvm/sdei.c +++ b/arch/arm64/kvm/sdei.c @@ -637,6 +637,31 @@ static unsigned long hypercall_mask(struct kvm_vcpu *vcpu, bool mask) return ret; } +static unsigned long hypercall_reset(struct kvm_vcpu *vcpu, bool private) +{ + struct kvm *kvm = vcpu->kvm; + struct kvm_sdei_kvm *ksdei = kvm->arch.sdei; + struct kvm_sdei_exposed_event *exposed_event; + struct kvm_sdei_registered_event *registered_event, *tmp; + unsigned long r, ret = SDEI_SUCCESS; + + spin_lock(&ksdei->lock); + + list_for_each_entry_safe(registered_event, tmp, + &ksdei->registered_events, link) { + exposed_event = registered_event->exposed_event; + if (private ^ kvm_sdei_is_shared(exposed_event->state.type)) + continue; + + r = unregister_one_event(kvm, NULL, registered_event); + ret = (r == SDEI_SUCCESS) ? ret : r; + } + + spin_unlock(&ksdei->lock); + + return ret; +} + int kvm_sdei_hypercall(struct kvm_vcpu *vcpu) { struct kvm *kvm = vcpu->kvm; @@ -700,8 +725,14 @@ int kvm_sdei_hypercall(struct kvm_vcpu *vcpu) case SDEI_1_0_FN_SDEI_INTERRUPT_BIND: case SDEI_1_0_FN_SDEI_INTERRUPT_RELEASE: case SDEI_1_1_FN_SDEI_EVENT_SIGNAL: + ret = SDEI_NOT_SUPPORTED; + break; case SDEI_1_0_FN_SDEI_PRIVATE_RESET: + ret = hypercall_reset(vcpu, true); + break; case SDEI_1_0_FN_SDEI_SHARED_RESET: + ret = hypercall_reset(vcpu, false); + break; case SDEI_1_1_FN_SDEI_FEATURES: default: ret = SDEI_NOT_SUPPORTED; -- 2.23.0