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David Alan Gilbert" , , , , , Venu Busireddy , Brijesh Singh Subject: [PATCH v12 30/46] KVM: x86: Move lookup of indexed CPUID leafs to helper Date: Mon, 7 Mar 2022 15:33:40 -0600 Message-ID: <20220307213356.2797205-31-brijesh.singh@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220307213356.2797205-1-brijesh.singh@amd.com> References: <20220307213356.2797205-1-brijesh.singh@amd.com> MIME-Version: 1.0 X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB04.amd.com (10.181.40.145) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: f362ed2f-51c5-4644-6260-08da00825dca X-MS-TrafficTypeDiagnostic: DM6PR12MB2619:EE_ X-Microsoft-Antispam-PRVS: X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230001)(4636009)(40470700004)(46966006)(36840700001)(47076005)(36860700001)(36756003)(7696005)(2616005)(83380400001)(2906002)(7406005)(7416002)(5660300002)(40460700003)(316002)(26005)(54906003)(82310400004)(8936002)(81166007)(70206006)(70586007)(44832011)(336012)(426003)(356005)(86362001)(186003)(1076003)(6666004)(16526019)(8676002)(4326008)(110136005)(508600001)(36900700001)(2101003);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 07 Mar 2022 21:35:14.5014 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: f362ed2f-51c5-4644-6260-08da00825dca X-MS-Exchange-CrossTenant-Id: 3dd8961f-e488-4e60-8e11-a82d994e183d X-MS-Exchange-CrossTenant-OriginalAttributedTenantConnectingIp: TenantId=3dd8961f-e488-4e60-8e11-a82d994e183d;Ip=[165.204.84.17];Helo=[SATLEXMB04.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT009.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: DM6PR12MB2619 X-Rspamd-Server: rspam10 X-Rspam-User: X-Stat-Signature: 1qchyjad1orhw9trtukmqpysg4mj7jcz Authentication-Results: imf04.hostedemail.com; dkim=pass header.d=amd.com header.s=selector1 header.b=MxXI0VGC; spf=pass (imf04.hostedemail.com: domain of brijesh.singh@amd.com designates 40.107.220.81 as permitted sender) smtp.mailfrom=brijesh.singh@amd.com; dmarc=pass (policy=quarantine) header.from=amd.com X-Rspamd-Queue-Id: 8788440005 X-HE-Tag: 1646688918-663463 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: From: Michael Roth Determining which CPUID leafs have significant ECX/index values is also needed by guest kernel code when doing SEV-SNP-validated CPUID lookups. Move this to common code to keep future updates in sync. Reviewed-by: Venu Busireddy Signed-off-by: Michael Roth Signed-off-by: Brijesh Singh --- arch/x86/include/asm/cpuid.h | 34 ++++++++++++++++++++++++++++++++++ arch/x86/kvm/cpuid.c | 19 ++----------------- 2 files changed, 36 insertions(+), 17 deletions(-) create mode 100644 arch/x86/include/asm/cpuid.h diff --git a/arch/x86/include/asm/cpuid.h b/arch/x86/include/asm/cpuid.h new file mode 100644 index 000000000000..70b2db18165e --- /dev/null +++ b/arch/x86/include/asm/cpuid.h @@ -0,0 +1,34 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * CPUID-related helpers/definitions + * + * Derived from arch/x86/kvm/cpuid.c + */ + +#ifndef _ASM_X86_CPUID_H +#define _ASM_X86_CPUID_H + +static __always_inline bool cpuid_function_is_indexed(u32 function) +{ + switch (function) { + case 4: + case 7: + case 0xb: + case 0xd: + case 0xf: + case 0x10: + case 0x12: + case 0x14: + case 0x17: + case 0x18: + case 0x1d: + case 0x1e: + case 0x1f: + case 0x8000001d: + return true; + } + + return false; +} + +#endif /* _ASM_X86_CPUID_H */ diff --git a/arch/x86/kvm/cpuid.c b/arch/x86/kvm/cpuid.c index 8bf541b24b4b..848ad1723fae 100644 --- a/arch/x86/kvm/cpuid.c +++ b/arch/x86/kvm/cpuid.c @@ -19,6 +19,7 @@ #include #include #include +#include #include "cpuid.h" #include "lapic.h" #include "mmu.h" @@ -722,24 +723,8 @@ static struct kvm_cpuid_entry2 *do_host_cpuid(struct kvm_cpuid_array *array, cpuid_count(entry->function, entry->index, &entry->eax, &entry->ebx, &entry->ecx, &entry->edx); - switch (function) { - case 4: - case 7: - case 0xb: - case 0xd: - case 0xf: - case 0x10: - case 0x12: - case 0x14: - case 0x17: - case 0x18: - case 0x1d: - case 0x1e: - case 0x1f: - case 0x8000001d: + if (cpuid_function_is_indexed(function)) entry->flags |= KVM_CPUID_FLAG_SIGNIFCANT_INDEX; - break; - } return entry; }