From patchwork Thu Nov 2 15:51:07 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Zeng Guang X-Patchwork-Id: 13443955 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 1DC14C0018A for ; Thu, 2 Nov 2023 16:33:29 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1376923AbjKBQd3 (ORCPT ); Thu, 2 Nov 2023 12:33:29 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41984 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1376921AbjKBQd2 (ORCPT ); Thu, 2 Nov 2023 12:33:28 -0400 Received: from mgamail.intel.com (mgamail.intel.com [192.55.52.115]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 27EA8182; Thu, 2 Nov 2023 09:33:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1698942803; x=1730478803; h=from:to:cc:subject:date:message-id:in-reply-to: references; bh=8/hRJyUBNjvleQKE+JOCe0b2zCgJ7MkC7xPhxYSrynY=; b=WhL8CXQKbYppnwN6dlgSBJTRe56iJM19HinxDuAV9PF+g7O0lMoEkFU+ sEuw/tDk38OHGeqVHMWV9RrgVKsIbGYX8dOIayqoDecnsQt6qafmhZZRn ZhXmf8fpnH9qpSFy7HowjfBz3W1h1w99IZbmPfJnzpwykbkxn6ec7yXLF 6DLgIsoa1BtPm5MVqPbl4sHZSG1QjsO+UWNXduk4IksWFGk29Yh3vBjWJ J09WSVoIKGkmu3Va+b+i/HE32WwxytIlqS4IGvhTTehh2DJZsHItfBFDe JIsl9jbggoCtl+gEAEdNC4tIwrUM4vZ6EHlxmmunYXi+uA4ObacDCUfb1 g==; X-IronPort-AV: E=McAfee;i="6600,9927,10882"; a="388570958" X-IronPort-AV: E=Sophos;i="6.03,272,1694761200"; d="scan'208";a="388570958" Received: from fmviesa001.fm.intel.com ([10.60.135.141]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Nov 2023 09:33:22 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.03,272,1694761200"; d="scan'208";a="9448494" Received: from arthur-vostro-3668.sh.intel.com ([10.239.159.65]) by smtpauth.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Nov 2023 09:33:18 -0700 From: Zeng Guang To: Sean Christopherson , Paolo Bonzini , Shuah Khan , Marc Zyngier , Oliver Upton , James Morse , Suzuki K Poulose , Zenghui Yu , Anup Patel , Atish Patra , David Hildenbrand Cc: kvm@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org, Zeng Guang Subject: [RFC PATCH v1 4/8] KVM : selftests : Adapt selftest cases to kernel canonical linear address Date: Thu, 2 Nov 2023 23:51:07 +0800 Message-Id: <20231102155111.28821-5-guang.zeng@intel.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20231102155111.28821-1-guang.zeng@intel.com> References: <20231102155111.28821-1-guang.zeng@intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-kselftest@vger.kernel.org Adapt RIP to kernel canonical linear address in test cases set_memory_region_test/debug_regs/userspace_msr_exit_test. No functional change intended. Signed-off-by: Zeng Guang --- .../testing/selftests/kvm/set_memory_region_test.c | 13 ++++++++++--- tools/testing/selftests/kvm/x86_64/debug_regs.c | 2 +- .../selftests/kvm/x86_64/userspace_msr_exit_test.c | 9 +++++---- 3 files changed, 16 insertions(+), 8 deletions(-) diff --git a/tools/testing/selftests/kvm/set_memory_region_test.c b/tools/testing/selftests/kvm/set_memory_region_test.c index b32960189f5f..8ab897bae3e0 100644 --- a/tools/testing/selftests/kvm/set_memory_region_test.c +++ b/tools/testing/selftests/kvm/set_memory_region_test.c @@ -31,6 +31,12 @@ #define MEM_REGION_GPA 0xc0000000 #define MEM_REGION_SLOT 10 +/* + * Offset to execute code at kernel address space + */ +#define KERNEL_LNA_OFFSET 0xffff800000000000 +#define CAST_TO_KERN(x) (x | KERNEL_LNA_OFFSET) + static const uint64_t MMIO_VAL = 0xbeefull; extern const uint64_t final_rip_start; @@ -300,10 +306,11 @@ static void test_delete_memory_region(void) * so the instruction pointer would point to the reset vector. */ if (run->exit_reason == KVM_EXIT_INTERNAL_ERROR) - TEST_ASSERT(regs.rip >= final_rip_start && - regs.rip < final_rip_end, + TEST_ASSERT(regs.rip >= CAST_TO_KERN(final_rip_start) && + regs.rip < CAST_TO_KERN(final_rip_end), "Bad rip, expected 0x%lx - 0x%lx, got 0x%llx\n", - final_rip_start, final_rip_end, regs.rip); + CAST_TO_KERN(final_rip_start), CAST_TO_KERN(final_rip_end), + regs.rip); kvm_vm_free(vm); } diff --git a/tools/testing/selftests/kvm/x86_64/debug_regs.c b/tools/testing/selftests/kvm/x86_64/debug_regs.c index f6b295e0b2d2..73ce373e3299 100644 --- a/tools/testing/selftests/kvm/x86_64/debug_regs.c +++ b/tools/testing/selftests/kvm/x86_64/debug_regs.c @@ -64,7 +64,7 @@ static void guest_code(void) GUEST_DONE(); } -#define CAST_TO_RIP(v) ((unsigned long long)&(v)) +#define CAST_TO_RIP(v) ((unsigned long long)&(v) | KERNEL_LNA_OFFSET) static void vcpu_skip_insn(struct kvm_vcpu *vcpu, int insn_len) { diff --git a/tools/testing/selftests/kvm/x86_64/userspace_msr_exit_test.c b/tools/testing/selftests/kvm/x86_64/userspace_msr_exit_test.c index 3533dc2fbfee..ab6b3f88352f 100644 --- a/tools/testing/selftests/kvm/x86_64/userspace_msr_exit_test.c +++ b/tools/testing/selftests/kvm/x86_64/userspace_msr_exit_test.c @@ -18,6 +18,7 @@ static int fep_available = 1; #define MSR_NON_EXISTENT 0x474f4f00 +#define CAST_TO_KERN(x) (x | KERNEL_LNA_OFFSET) static u64 deny_bits = 0; struct kvm_msr_filter filter_allow = { @@ -363,12 +364,12 @@ static void __guest_gp_handler(struct ex_regs *regs, char *r_start, char *r_end, char *w_start, char *w_end) { - if (regs->rip == (uintptr_t)r_start) { - regs->rip = (uintptr_t)r_end; + if (regs->rip == CAST_TO_KERN((uintptr_t)r_start)) { + regs->rip = CAST_TO_KERN((uintptr_t)r_end); regs->rax = 0; regs->rdx = 0; - } else if (regs->rip == (uintptr_t)w_start) { - regs->rip = (uintptr_t)w_end; + } else if (regs->rip == CAST_TO_KERN((uintptr_t)w_start)) { + regs->rip = CAST_TO_KERN((uintptr_t)w_end); } else { GUEST_ASSERT(!"RIP is at an unknown location!"); }