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: 13118471 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 9E866C54EAA for ; Fri, 27 Jan 2023 11:42:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233762AbjA0LmT (ORCPT ); Fri, 27 Jan 2023 06:42:19 -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 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.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 | 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",