From patchwork Fri Jan 27 11:29:29 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Steven Price X-Patchwork-Id: 49295 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:adf:eb09:0:0:0:0:0 with SMTP id s9csp787797wrn; Fri, 27 Jan 2023 03:45:23 -0800 (PST) X-Google-Smtp-Source: AK7set94yTwBCtUGsbXiyInLw39SItvYXTabm+57n2x3DZ0/grOv30KMzGMSnA+VbFhdw6LdEXyO X-Received: by 2002:aa7:9e51:0:b0:593:40ba:3ee8 with SMTP id z17-20020aa79e51000000b0059340ba3ee8mr206869pfq.12.1674819923419; Fri, 27 Jan 2023 03:45:23 -0800 (PST) ARC-Seal: i=1; a=rsa-sha256; t=1674819923; cv=none; d=google.com; s=arc-20160816; b=E/km518NHMLAd2yped5jt/mWPB2ghBnm7x6eFumvCJozFQZoy3VdqThzqTolkiZSOC iI8B76Rob98CPZgmFWxIT4rfPuT3+s3Xca5NhwXmIvsawkj5+6fIG+DuNPeFtjrBvaDD 9rqC4JpgnuoylGRx+f5cIJagfYPodTYAY2oyZRO+Y7lThjdXPdraBu2VuOIwKq1lZ16h bpt/77TQP4p5z6pp3uoRj8FKqO6aauEXitDmt9GmURFv8zKda5/liPPy+1qW8TrKbisc 8RoRH9GByug4ad2SgvVEchgNxdvcSt88v2nZ0+EPor+oaptyTOhWBl8xKLNABzIaKa51 EhGA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from; bh=9Tl5yvJQsa5iuhfm2mfX7J+VsrVhLfl0rBPSM0/PMOU=; b=G2p7fu9Ixo0nCTzXQyy2BZVoaM6ypZk9FUtFR5T4qoxARHkeVpMbm8YY05kMmFHAZt DM7YndKsv3SJeJw3P7yMce1H8KWtRJlq7z8fRtabW1L8KcrmtqAmRNZEnOQZWPsY0Oxs 7OwMhArWVpiNlM2uwNbS6vxRMKJr6vQPwhDyWbLgpSfVlSGrdTq7igo/KQQqJa49nx8h p94ynFpmptenIY7omp/uel1GEkWNUELJbVssY7LZsVY7Bd5k1xRD5s7PzFjpvwTiEeF0 +JR3lFUCT8tqw2YCrvailK26Hq6GlDZ9MKfxpPTg/fJLy1U1NvFxvmQuhdwsUu/nl4zK Jgdw== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=arm.com Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id y15-20020aa7942f000000b0058e11332e9bsi4139897pfo.152.2023.01.27.03.45.10; Fri, 27 Jan 2023 03:45:23 -0800 (PST) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=arm.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233988AbjA0Lm3 (ORCPT + 99 others); Fri, 27 Jan 2023 06:42:29 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60152 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233802AbjA0Lln (ORCPT ); Fri, 27 Jan 2023 06:41:43 -0500 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 737A37A4B9; Fri, 27 Jan 2023 03:41:08 -0800 (PST) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 63CF01713; Fri, 27 Jan 2023 03:31:28 -0800 (PST) Received: from e122027.cambridge.arm.com (e122027.cambridge.arm.com [10.1.35.16]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 0B9913F64C; Fri, 27 Jan 2023 03:30:43 -0800 (PST) From: Steven Price To: kvm@vger.kernel.org, kvmarm@lists.linux.dev Cc: Steven Price , Catalin Marinas , Marc Zyngier , Will Deacon , James Morse , Oliver Upton , Suzuki K Poulose , Zenghui Yu , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, Joey Gouly , Alexandru Elisei , Christoffer Dall , Fuad Tabba , linux-coco@lists.linux.dev Subject: [RFC PATCH 25/28] arm64: rme: support RSI_HOST_CALL Date: Fri, 27 Jan 2023 11:29:29 +0000 Message-Id: <20230127112932.38045-26-steven.price@arm.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20230127112932.38045-1-steven.price@arm.com> References: <20230127112248.136810-1-suzuki.poulose@arm.com> <20230127112932.38045-1-steven.price@arm.com> MIME-Version: 1.0 X-Spam-Status: No, score=-4.2 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_MED, SPF_HELO_NONE,SPF_NONE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org X-getmail-retrieved-from-mailbox: =?utf-8?q?INBOX?= X-GMAIL-THRID: =?utf-8?q?1756175975852314779?= X-GMAIL-MSGID: =?utf-8?q?1756175975852314779?= From: Joey Gouly Forward RSI_HOST_CALLS to KVM's HVC handler. Signed-off-by: Joey Gouly Signed-off-by: Steven Price --- arch/arm64/kvm/rme-exit.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/arch/arm64/kvm/rme-exit.c b/arch/arm64/kvm/rme-exit.c index 15a4ff3517db..fcdc87e8f6bc 100644 --- a/arch/arm64/kvm/rme-exit.c +++ b/arch/arm64/kvm/rme-exit.c @@ -4,6 +4,7 @@ */ #include +#include #include #include @@ -98,6 +99,29 @@ static int rec_exit_ripas_change(struct kvm_vcpu *vcpu) return 1; } +static int rec_exit_host_call(struct kvm_vcpu *vcpu) +{ + int ret, i; + struct rec *rec = &vcpu->arch.rec; + + vcpu->stat.hvc_exit_stat++; + + for (i = 0; i < REC_RUN_GPRS; i++) + vcpu_set_reg(vcpu, i, rec->run->exit.gprs[i]); + + ret = kvm_hvc_call_handler(vcpu); + + if (ret < 0) { + vcpu_set_reg(vcpu, 0, ~0UL); + ret = 1; + } + + for (i = 0; i < REC_RUN_GPRS; i++) + rec->run->entry.gprs[i] = vcpu_get_reg(vcpu, i); + + return ret; +} + static void update_arch_timer_irq_lines(struct kvm_vcpu *vcpu) { struct rec *rec = &vcpu->arch.rec; @@ -159,6 +183,8 @@ int handle_rme_exit(struct kvm_vcpu *vcpu, int rec_run_ret) return rec_exit_psci(vcpu); case RMI_EXIT_RIPAS_CHANGE: return rec_exit_ripas_change(vcpu); + case RMI_EXIT_HOST_CALL: + return rec_exit_host_call(vcpu); } kvm_pr_unimpl("Unsupported exit reason: %u\n",