From patchwork Mon Aug 7 06:51:36 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: zhaotianrui X-Patchwork-Id: 131707 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:a59:c44e:0:b0:3f2:4152:657d with SMTP id w14csp1274583vqr; Mon, 7 Aug 2023 00:14:14 -0700 (PDT) X-Google-Smtp-Source: AGHT+IFHj+MUrCm4FwV6JMj2pYrmFhRxO4i6iDkIyeZNRP7wcP4NkgOIdFNqRX3Mwz7m73aconUs X-Received: by 2002:a17:90b:3a8f:b0:262:f798:b60d with SMTP id om15-20020a17090b3a8f00b00262f798b60dmr6274923pjb.6.1691392453801; Mon, 07 Aug 2023 00:14:13 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1691392453; cv=none; d=google.com; s=arc-20160816; b=zKeIqqQ8sCc3mxr6xd8sEhjiQUFQ4g0XhJvo8KlSJnWnCO9qec/PM2IPdx/GeC0+ka Pji/DBuaCob9H7dOnN4mTxZ29HrREGaunbRF7FVouhcPxK4vDRsCHXfQYQKYEr6mmctl /0+FMQ0N9uvqlDMNRJCLRh6hDEwO5Zg4HoF9xjPdAewYkxZomxJjNeKW9U/wg8JkuCJc NjalqdJpXh/yYTR9WStwimIIcvAFxvW6EAu2H+blQ8xNOK5dqr/digkeM5Nglbq8EwBl My33jazkvb4xarfxhn6V0u35/mQtrhTgQjFji5hJzeegzY0LXL0QUbWWBN1jajpDxM73 crVw== 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=vdR8KVto+ZVhAXAaFq0Y4FBz/3rDyrUBsszrws7YbEs=; fh=gsUmtxbMqK36mL5NFoC4xZ5sX9WhDudI+8elbmlEVgg=; b=HeJBSaalDr7lThrEloDj/lvfe1gIajgp9Oy2SM/QdzrnKKkiz8FGx+uvVsj6t5cABo 7sdOiPLpgcmsC6PofdNbzGz1Lib9ABVix+yb4tpy7Imfhx8P2gmokFdDkPlIAXW4vXti xxdVOVbVAMRrmbYP/MMaozxJoOCQTNjPFPt9b7W8SVaEsQIpXtpibxxreRVhS0fY5uRr qg3Oe9zuoJr6JHtD5TQsnvTaz8mDJSvkS21LUPWglnTr79V3EG07kGK06kMI59yWberG HBGJ8pVLBz53NZBr3twckEr5+XcADbM5DCNDQrQnjpsaEGRwhlQjzBSeTPsy0xl5J8dw CDew== 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 Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id mh5-20020a17090b4ac500b00263fc986e28si9052525pjb.24.2023.08.07.00.13.59; Mon, 07 Aug 2023 00:14:13 -0700 (PDT) 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 Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229998AbjHGGwD (ORCPT + 99 others); Mon, 7 Aug 2023 02:52:03 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50182 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231328AbjHGGvs (ORCPT ); Mon, 7 Aug 2023 02:51:48 -0400 Received: from mail.loongson.cn (mail.loongson.cn [114.242.206.163]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 8138F198D; Sun, 6 Aug 2023 23:51:42 -0700 (PDT) Received: from loongson.cn (unknown [10.2.5.185]) by gateway (Coremail) with SMTP id _____8AxCPJ8lNBk9dwRAA--.40000S3; Mon, 07 Aug 2023 14:51:40 +0800 (CST) Received: from localhost.localdomain (unknown [10.2.5.185]) by localhost.localdomain (Coremail) with SMTP id AQAAf8DxJ8x5lNBkwspMAA--.23544S5; Mon, 07 Aug 2023 14:51:39 +0800 (CST) From: Tianrui Zhao To: Shuah Khan , Paolo Bonzini , linux-kernel@vger.kernel.org, kvm@vger.kernel.org, Sean Christopherson Cc: Vishal Annapurve , Huacai Chen , WANG Xuerui , loongarch@lists.linux.dev, Peter Xu , Vipin Sharma , maobibo@loongson.cn, zhaotianrui@loongson.cn Subject: [PATCH v2 3/4] KVM: selftests: Add ucall test support for LoongArch Date: Mon, 7 Aug 2023 14:51:36 +0800 Message-Id: <20230807065137.3408970-4-zhaotianrui@loongson.cn> X-Mailer: git-send-email 2.39.1 In-Reply-To: <20230807065137.3408970-1-zhaotianrui@loongson.cn> References: <20230807065137.3408970-1-zhaotianrui@loongson.cn> MIME-Version: 1.0 X-CM-TRANSID: AQAAf8DxJ8x5lNBkwspMAA--.23544S5 X-CM-SenderInfo: p2kd03xldq233l6o00pqjv00gofq/ X-Coremail-Antispam: 1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7 ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx nUUI43ZEXa7xR_UUUUUUUUU== X-Spam-Status: No, score=-1.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_BLOCKED,SPF_HELO_NONE,SPF_PASS 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: INBOX X-GMAIL-THRID: 1773553533986550451 X-GMAIL-MSGID: 1773553533986550451 Add ucall test support for LoongArch. A ucall is a "hypercall to userspace". Based-on: <20230803022138.2736430-1-zhaotianrui@loongson.cn> Signed-off-by: Tianrui Zhao --- .../selftests/kvm/lib/loongarch/ucall.c | 43 +++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 tools/testing/selftests/kvm/lib/loongarch/ucall.c diff --git a/tools/testing/selftests/kvm/lib/loongarch/ucall.c b/tools/testing/selftests/kvm/lib/loongarch/ucall.c new file mode 100644 index 000000000000..72868ddec313 --- /dev/null +++ b/tools/testing/selftests/kvm/lib/loongarch/ucall.c @@ -0,0 +1,43 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * ucall support. A ucall is a "hypercall to userspace". + * + */ +#include "kvm_util.h" + +/* + * ucall_exit_mmio_addr holds per-VM values (global data is duplicated by each + * VM), it must not be accessed from host code. + */ +static vm_vaddr_t *ucall_exit_mmio_addr; + +void ucall_arch_init(struct kvm_vm *vm, vm_paddr_t mmio_gpa) +{ + vm_vaddr_t mmio_gva = vm_vaddr_unused_gap(vm, vm->page_size, KVM_UTIL_MIN_VADDR); + + virt_map(vm, mmio_gva, mmio_gpa, 1); + + vm->ucall_mmio_addr = mmio_gpa; + + write_guest_global(vm, ucall_exit_mmio_addr, (vm_vaddr_t *)mmio_gva); +} + +void ucall_arch_do_ucall(vm_vaddr_t uc) +{ + WRITE_ONCE(*ucall_exit_mmio_addr, uc); +} + +void *ucall_arch_get_ucall(struct kvm_vcpu *vcpu) +{ + struct kvm_run *run = vcpu->run; + + if (run->exit_reason == KVM_EXIT_MMIO && + run->mmio.phys_addr == vcpu->vm->ucall_mmio_addr) { + TEST_ASSERT(run->mmio.is_write && run->mmio.len == sizeof(uint64_t), + "Unexpected ucall exit mmio address access"); + + return (void *)(*((uint64_t *)run->mmio.data)); + } + + return NULL; +}