From patchwork Fri Mar 1 01:35:45 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chao Du X-Patchwork-Id: 13577842 Received: from zg8tndyumtaxlji0oc4xnzya.icoremail.net (zg8tndyumtaxlji0oc4xnzya.icoremail.net [46.101.248.176]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 02D602E416 for ; Fri, 1 Mar 2024 01:39:18 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=46.101.248.176 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709257162; cv=none; b=WepJ9HE6Peak9QcV44f4LdGcUfP8FLTrMLkImTVZoyjTG4R+3NdslQ47fRc7FVqg3zs6m+g2hLS3eb5baeUs/ov7KoF+TgW5SNUss3/wdpK9lC5NsU5f7fTPfgkqM4g3xYj8llrOMbC9MWRIY6ScKbSBG8lQFEFDFrDs2CFFHKk= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1709257162; c=relaxed/simple; bh=vpAjm6YpQYkIsCjfkUCvdmbErjM3v3bSP8SmL6U5bbU=; h=From:To:Subject:Date:Message-Id:In-Reply-To:References; b=o0e6gYYLpSGrQ1ETgHWM2TTYsz7v8kfw422o1zL7K6ihLMnUZXSIeWl42H/+8/tcCXkvXhVTZCOm5wqigAS0gE2nrnp24jJZrb6bjLTfRJGWzzh1bDJdyl33wYdM03ypdtnSptaDZiGd0eS0ZDonFCcxgfn8ReS+FkZecSqqw9M= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=eswincomputing.com; spf=pass smtp.mailfrom=eswincomputing.com; arc=none smtp.client-ip=46.101.248.176 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=eswincomputing.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=eswincomputing.com Received: from localhost.localdomain (unknown [10.12.130.31]) by app1 (Coremail) with SMTP id TAJkCgCnJfucMeFljDIdAA--.45179S7; Fri, 01 Mar 2024 09:38:46 +0800 (CST) From: Chao Du To: kvm@vger.kernel.org, kvm-riscv@lists.infradead.org, anup@brainfault.org, atishp@atishpatra.org, pbonzini@redhat.com, shuah@kernel.org, dbarboza@ventanamicro.com, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, duchao713@qq.com Subject: [PATCH v2 3/3] RISC-V: KVM: selftests: Add breakpoints test support Date: Fri, 1 Mar 2024 01:35:45 +0000 Message-Id: <20240301013545.10403-4-duchao@eswincomputing.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20240301013545.10403-1-duchao@eswincomputing.com> References: <20240301013545.10403-1-duchao@eswincomputing.com> X-CM-TRANSID: TAJkCgCnJfucMeFljDIdAA--.45179S7 X-Coremail-Antispam: 1UD129KBjvJXoW7KF1rtr1xCFW7Ww15Xw1kKrg_yoW8tw1Up3 WxCwn09rWvqry3Gw4xAw4DuF4fKrykWF48Jr1fW34jvrWUtr4rJrnagFy7Ar9I93yrXw1f Aa4fW3WS9F4DJw7anT9S1TB71UUUUUUqnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUUP2b7Iv0xC_Zr1lb4IE77IF4wAFF20E14v26rWj6s0DM7CY07I2 0VC2zVCF04k26cxKx2IYs7xG6rWj6s0DM7CIcVAFz4kK6r1j6r18M28IrcIa0xkI8VA2jI 8067AKxVWUWwA2048vs2IY020Ec7CjxVAFwI0_Xr0E3s1l8cAvFVAK0II2c7xJM28CjxkF 64kEwVA0rcxSw2x7M28EF7xvwVC0I7IYx2IY67AKxVWDJVCq3wA2z4x0Y4vE2Ix0cI8IcV CY1x0267AKxVW8Jr0_Cr1UM28EF7xvwVC2z280aVAFwI0_GcCE3s1l84ACjcxK6I8E87Iv 6xkF7I0E14v26rxl6s0DM2AIxVAIcxkEcVAq07x20xvEncxIr21l5I8CrVACY4xI64kE6c 02F40Ex7xfMcIj6xIIjxv20xvE14v26r1j6r18McIj6I8E87Iv67AKxVWUJVW8JwAm72CE 4IkC6x0Yz7v_Jr0_Gr1lF7xvr2IYc2Ij64vIr41lFIxGxcIEc7CjxVA2Y2ka0xkIwI1lc2 xSY4AK6svPMxAIw28IcxkI7VAKI48JMxC20s026xCaFVCjc4AY6r1j6r4UMI8I3I0E5I8C rVAFwI0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_JrWlx4CE17CEb7AF67AKxVWUtVW8Zw CIc40Y0x0EwIxGrwCI42IY6xIIjxv20xvE14v26r1j6r1xMIIF0xvE2Ix0cI8IcVCY1x02 67AKxVW8JVWxJwCI42IY6xAIw20EY4v20xvaj40_Jr0_JF4lIxAIcVC2z280aVAFwI0_Jr 0_Gr1lIxAIcVC2z280aVCY1x0267AKxVW8JVW8JrUvcSsGvfC2KfnxnUUI43ZEXa7IU8Sf O7UUUUU== X-CM-SenderInfo: xgxfxt3r6h245lqf0zpsxwx03jof0z/ Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Initial support for RISC-V KVM breakpoint test. Check the exit reason and the PC when guest debug is enabled. Signed-off-by: Chao Du --- tools/testing/selftests/kvm/Makefile | 1 + .../testing/selftests/kvm/riscv/breakpoints.c | 49 +++++++++++++++++++ 2 files changed, 50 insertions(+) create mode 100644 tools/testing/selftests/kvm/riscv/breakpoints.c diff --git a/tools/testing/selftests/kvm/Makefile b/tools/testing/selftests/kvm/Makefile index 492e937fab00..5f9048a740b0 100644 --- a/tools/testing/selftests/kvm/Makefile +++ b/tools/testing/selftests/kvm/Makefile @@ -184,6 +184,7 @@ TEST_GEN_PROGS_s390x += rseq_test TEST_GEN_PROGS_s390x += set_memory_region_test TEST_GEN_PROGS_s390x += kvm_binary_stats_test +TEST_GEN_PROGS_riscv += riscv/breakpoints TEST_GEN_PROGS_riscv += demand_paging_test TEST_GEN_PROGS_riscv += dirty_log_test TEST_GEN_PROGS_riscv += get-reg-list diff --git a/tools/testing/selftests/kvm/riscv/breakpoints.c b/tools/testing/selftests/kvm/riscv/breakpoints.c new file mode 100644 index 000000000000..be2d94837c83 --- /dev/null +++ b/tools/testing/selftests/kvm/riscv/breakpoints.c @@ -0,0 +1,49 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * RISC-V KVM breakpoint tests. + * + * Copyright 2024 Beijing ESWIN Computing Technology Co., Ltd. + * + */ +#include "kvm_util.h" + +#define PC(v) ((uint64_t)&(v)) + +extern unsigned char sw_bp; + +static void guest_code(void) +{ + asm volatile("sw_bp: ebreak"); + asm volatile("nop"); + asm volatile("nop"); + asm volatile("nop"); + + GUEST_DONE(); +} + +int main(void) +{ + struct kvm_vm *vm; + struct kvm_vcpu *vcpu; + struct kvm_guest_debug debug; + uint64_t pc; + + TEST_REQUIRE(kvm_has_cap(KVM_CAP_SET_GUEST_DEBUG)); + + vm = vm_create_with_one_vcpu(&vcpu, guest_code); + + memset(&debug, 0, sizeof(debug)); + debug.control = KVM_GUESTDBG_ENABLE; + vcpu_guest_debug_set(vcpu, &debug); + vcpu_run(vcpu); + + TEST_ASSERT_KVM_EXIT_REASON(vcpu, KVM_EXIT_DEBUG); + + vcpu_get_reg(vcpu, RISCV_CORE_REG(regs.pc), &pc); + + TEST_ASSERT_EQ(pc, PC(sw_bp)); + + kvm_vm_free(vm); + + return 0; +}