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David Alan Gilbert" , , , , Brijesh Singh Subject: [PATCH v8 23/40] KVM: x86: move lookup of indexed CPUID leafs to helper Date: Fri, 10 Dec 2021 09:43:15 -0600 Message-ID: <20211210154332.11526-24-brijesh.singh@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211210154332.11526-1-brijesh.singh@amd.com> References: <20211210154332.11526-1-brijesh.singh@amd.com> MIME-Version: 1.0 X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB03.amd.com (10.181.40.144) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 7787bd83-5be7-4205-69e2-08d9bbf3f220 X-MS-TrafficTypeDiagnostic: BYAPR12MB3365:EE_ X-Microsoft-Antispam-PRVS: X-MS-Oob-TLC-OOBClassifiers: OLM:2150; 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:SATLEXMB03.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(4636009)(36840700001)(46966006)(40470700001)(70586007)(81166007)(7406005)(2616005)(44832011)(86362001)(7696005)(40460700001)(2906002)(47076005)(26005)(426003)(1076003)(508600001)(7416002)(82310400004)(16526019)(336012)(6666004)(186003)(5660300002)(316002)(8676002)(4326008)(54906003)(356005)(83380400001)(110136005)(70206006)(36860700001)(36756003)(8936002)(2101003)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 10 Dec 2021 15:44:26.2824 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 7787bd83-5be7-4205-69e2-08d9bbf3f220 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=[SATLEXMB03.amd.com] X-MS-Exchange-CrossTenant-AuthSource: BN8NAM11FT017.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: BYAPR12MB3365 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org 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. Signed-off-by: Michael Roth Signed-off-by: Brijesh Singh Reviewed-by: Venu Busireddy --- arch/x86/include/asm/cpuid.h | 26 ++++++++++++++++++++++++++ arch/x86/kvm/cpuid.c | 17 ++--------------- 2 files changed, 28 insertions(+), 15 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..61426eb1f665 --- /dev/null +++ b/arch/x86/include/asm/cpuid.h @@ -0,0 +1,26 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#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 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 07e9215e911d..6b99e8e87480 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" @@ -626,22 +627,8 @@ 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 0x1f: - case 0x8000001d: + if (cpuid_function_is_indexed(function)) entry->flags |= KVM_CPUID_FLAG_SIGNIFCANT_INDEX; - break; - } return entry; }