From patchwork Fri Apr 12 08:42:54 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Steven Price X-Patchwork-Id: 13627283 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 BC9CDC4345F for ; Fri, 12 Apr 2024 08:48:21 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=IxsMAMiTjDh/80xr1yxmlYnusxMybFxtpvIaKuZtDzc=; b=qetp8CrGpC7d01 m/DCqKVtTB7Q3jn0TaNkqzleBgtlzulOj3QxiKs4IYdVp/0eWSUuy11OJix12qCvNC6Rg0RHIQEU2 jGeXo7KgvQAsvnIb/7QHSwMWN0i8PbjDRCDKP1rJVfWDAPkkqfASOAbqhrhCJzKIn05dwEjPyKFaP LWtiztD5O6/Nit0hoFHB0SZqUT+M7CX9WYPdzt6H5lzzapJ4NB2IsaeASREl2rV9hUD41R5qMI+Un 7ZRA4REMFR1TrYG84OMrGA9vDFdMZGfo7OXxEZkUgdaSuJvsLppyOwcxdj2LcDItqZu1Y1/Ua2rNf +M1PoC6o1nWo4q6FBOfA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rvCZr-0000000GB5B-04m2; Fri, 12 Apr 2024 08:48:07 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1rvCWG-0000000G8c6-2My4 for linux-arm-kernel@lists.infradead.org; Fri, 12 Apr 2024 08:44:26 +0000 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 79C0F14BF; Fri, 12 Apr 2024 01:44:53 -0700 (PDT) Received: from e112269-lin.cambridge.arm.com (e112269-lin.cambridge.arm.com [10.1.194.51]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 1DE8C3F6C4; Fri, 12 Apr 2024 01:44:22 -0700 (PDT) From: Steven Price To: kvm@vger.kernel.org, kvmarm@lists.linux.dev Cc: Joey Gouly , 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, Alexandru Elisei , Christoffer Dall , Fuad Tabba , linux-coco@lists.linux.dev, Ganapatrao Kulkarni , Steven Price Subject: [PATCH v2 28/43] arm64: rme: support RSI_HOST_CALL Date: Fri, 12 Apr 2024 09:42:54 +0100 Message-Id: <20240412084309.1733783-29-steven.price@arm.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20240412084309.1733783-1-steven.price@arm.com> References: <20240412084056.1733704-1-steven.price@arm.com> <20240412084309.1733783-1-steven.price@arm.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240412_014424_878245_F8F6F2FA X-CRM114-Status: GOOD ( 11.60 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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 | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/arch/arm64/kvm/rme-exit.c b/arch/arm64/kvm/rme-exit.c index 2ddaec09cc98..b442e9a00d07 100644 --- a/arch/arm64/kvm/rme-exit.c +++ b/arch/arm64/kvm/rme-exit.c @@ -116,6 +116,29 @@ static int rec_exit_ripas_change(struct kvm_vcpu *vcpu) return 0; } +static int rec_exit_host_call(struct kvm_vcpu *vcpu) +{ + int ret, i; + struct realm_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_smccc_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 realm_rec *rec = &vcpu->arch.rec; @@ -177,6 +200,8 @@ 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",