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=-16.3 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,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 25701C433E0 for ; Tue, 9 Feb 2021 04:00:58 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id CDC8264EB8 for ; Tue, 9 Feb 2021 04:00:57 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229544AbhBIEAr (ORCPT ); Mon, 8 Feb 2021 23:00:47 -0500 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:33866 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S230051AbhBIDmj (ORCPT ); Mon, 8 Feb 2021 22:42:39 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1612842031; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=DElgAKnXxGi8roylqPYAKEl/MuVnVKXjV89e67/IzUs=; b=AmvLA8n/w5sZlD75q2hR4qgUVncSempWrPj2FU59XySzyWh3fRcgD1Lbf0O088tBEn4IjV p16s8OauUX5Sk/GUVdYJ/p8/DvdxqWD0kKtOobnIqpJDdVl2T6ZnlADu9asvLvCxSRLaLe sGNVohJY8o1aWxf8hY5Tt+WuNTCFyUc= 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-199-EkIbA_6xNSmNEdhguYfIFg-1; Mon, 08 Feb 2021 22:28:43 -0500 X-MC-Unique: EkIbA_6xNSmNEdhguYfIFg-1 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 4DF8F8030C1; Tue, 9 Feb 2021 03:28:42 +0000 (UTC) Received: from gshan.redhat.com (vpn2-54-26.bne.redhat.com [10.64.54.26]) by smtp.corp.redhat.com (Postfix) with ESMTP id 972DE19727; Tue, 9 Feb 2021 03:28:39 +0000 (UTC) From: Gavin Shan To: kvmarm@lists.cs.columbia.edu Cc: linux-kernel@vger.kernel.org, pbonzini@redhat.com, maz@kernel.org, james.morse@arm.com, Jonathan.Cameron@huawei.com, mark.rutland@arm.com, will@kernel.org, shan.gavin@gmail.com Subject: [PATCH v2 12/21] KVM: arm64: Support SDEI_{PRIVATE, SHARED}_RESET hypercall Date: Tue, 9 Feb 2021 11:27:24 +0800 Message-Id: <20210209032733.99996-13-gshan@redhat.com> In-Reply-To: <20210209032733.99996-1-gshan@redhat.com> References: <20210209032733.99996-1-gshan@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 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 purge the private or shared SDEI events, which are registered previously. Signed-off-by: Gavin Shan --- arch/arm64/kvm/sdei.c | 29 +++++++++++++++++++++++++++++ 1 file changed, 29 insertions(+) diff --git a/arch/arm64/kvm/sdei.c b/arch/arm64/kvm/sdei.c index 3fb33258b494..62efee2b67b8 100644 --- a/arch/arm64/kvm/sdei.c +++ b/arch/arm64/kvm/sdei.c @@ -582,6 +582,29 @@ static unsigned long kvm_sdei_hypercall_mask(struct kvm_vcpu *vcpu, return ret; } +static unsigned long kvm_sdei_hypercall_reset(struct kvm_vcpu *vcpu, + bool private) +{ + struct kvm *kvm = vcpu->kvm; + struct kvm_sdei_kvm *ksdei = kvm->arch.sdei; + struct kvm_sdei_vcpu *vsdei = vcpu->arch.sdei; + unsigned int mask = private ? (1 << SDEI_EVENT_TYPE_PRIVATE) : + (1 << SDEI_EVENT_TYPE_SHARED); + unsigned long ret = SDEI_SUCCESS; + + /* Sanity check */ + if (!(ksdei && vsdei)) { + ret = SDEI_NOT_SUPPORTED; + goto out; + } + + spin_lock(&ksdei->lock); + kvm_sdei_remove_kvm_events(kvm, mask, false); + spin_unlock(&ksdei->lock); +out: + return ret; +} + int kvm_sdei_hypercall(struct kvm_vcpu *vcpu) { u32 func = smccc_get_function(vcpu); @@ -626,8 +649,14 @@ int kvm_sdei_hypercall(struct kvm_vcpu *vcpu) break; case SDEI_1_0_FN_SDEI_INTERRUPT_BIND: case SDEI_1_0_FN_SDEI_INTERRUPT_RELEASE: + ret = SDEI_NOT_SUPPORTED; + break; case SDEI_1_0_FN_SDEI_PRIVATE_RESET: + ret = kvm_sdei_hypercall_reset(vcpu, true); + break; case SDEI_1_0_FN_SDEI_SHARED_RESET: + ret = kvm_sdei_hypercall_reset(vcpu, false); + break; default: ret = SDEI_NOT_SUPPORTED; } -- 2.23.0