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David Alan Gilbert" , , , , Brijesh Singh Subject: [PATCH v6 27/42] KVM: x86: move lookup of indexed CPUID leafs to helper Date: Fri, 8 Oct 2021 13:04:38 -0500 Message-ID: <20211008180453.462291-28-brijesh.singh@amd.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20211008180453.462291-1-brijesh.singh@amd.com> References: <20211008180453.462291-1-brijesh.singh@amd.com> Precedence: bulk X-Mailing-List: linux-coco@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-Office365-Filtering-Correlation-Id: 8f04729c-f7ab-46f4-383f-08d98a86487e X-MS-TrafficTypeDiagnostic: SJ0PR12MB5503: 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:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(4636009)(36840700001)(46966006)(426003)(8676002)(26005)(54906003)(4326008)(5660300002)(8936002)(7696005)(2616005)(110136005)(6666004)(82310400003)(70206006)(508600001)(83380400001)(70586007)(336012)(47076005)(1076003)(36860700001)(316002)(36756003)(81166007)(2906002)(86362001)(186003)(356005)(7406005)(16526019)(7416002)(44832011)(2101003)(36900700001);DIR:OUT;SFP:1101; X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 08 Oct 2021 18:05:59.4578 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 8f04729c-f7ab-46f4-383f-08d98a86487e 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: CO1NAM11FT044.eop-nam11.prod.protection.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SJ0PR12MB5503 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 --- 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 751aa85a3001..312b0382e541 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" @@ -582,22 +583,8 @@ 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; } -- 2.25.1