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client-ip=165.204.84.17; helo=SATLEXMB04.amd.com; pr=C Received: from SATLEXMB04.amd.com (165.204.84.17) by SJ1PEPF000023CD.mail.protection.outlook.com (10.167.244.8) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.20.8489.16 via Frontend Transport; Fri, 28 Feb 2025 09:34:07 +0000 Received: from BLR-L-NUPADHYA.amd.com (10.180.168.240) by SATLEXMB04.amd.com (10.181.40.145) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.39; Fri, 28 Feb 2025 03:31:54 -0600 From: Neeraj Upadhyay To: , , CC: , , , , , , , , , , , , Subject: [RFC PATCH 01/31] Add GHCB with setters and getters Date: Fri, 28 Feb 2025 14:59:54 +0530 Message-ID: <20250228093024.114983-2-Neeraj.Upadhyay@amd.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20250228093024.114983-1-Neeraj.Upadhyay@amd.com> References: <20250228093024.114983-1-Neeraj.Upadhyay@amd.com> Precedence: bulk X-Mailing-List: linux-kselftest@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 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-TrafficTypeDiagnostic: SJ1PEPF000023CD:EE_|SN7PR12MB6911:EE_ X-MS-Office365-Filtering-Correlation-Id: 8a6fbac6-6cb2-4a0e-5361-08dd57db0cd3 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0;ARA:13230040|36860700013|1800799024|82310400026|376014|7053199007; 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X-OriginatorOrg: amd.com X-MS-Exchange-CrossTenant-OriginalArrivalTime: 28 Feb 2025 09:34:07.9390 (UTC) X-MS-Exchange-CrossTenant-Network-Message-Id: 8a6fbac6-6cb2-4a0e-5361-08dd57db0cd3 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: SJ1PEPF000023CD.namprd02.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Anonymous X-MS-Exchange-CrossTenant-FromEntityHeader: HybridOnPrem X-MS-Exchange-Transport-CrossTenantHeadersStamped: SN7PR12MB6911 From: Peter Gonda Move the GHCB definitions from svm.h to the tools/ copy. This allows the SEV-ES selftest to use GHCBs which are required for non-trival VMs to paravirtualize NonAutomaticExits (NAEs) when SEV-ES is enabled. GHCB getters/setters have a warning with address-of-packed-member, so removed this using the CFLAGS. Cc: Vishal Annapurve Cc: Ackerley Tng Cc: Paolo Bonzini Cc: Claudio Imbrenda Cc: Sean Christopherson Cc: Carlos Bilbao Cc: Tom Lendacky Cc: Michael Roth Cc: kvm@vger.kernel.org Cc: linux-kselftest@vger.kernel.org Signed-off-by: Peter Gonda Signed-off-by: Neeraj Upadhyay --- tools/testing/selftests/kvm/Makefile.kvm | 2 +- tools/testing/selftests/kvm/include/x86/svm.h | 106 ++++++++++++++++++ 2 files changed, 107 insertions(+), 1 deletion(-) diff --git a/tools/testing/selftests/kvm/Makefile.kvm b/tools/testing/selftests/kvm/Makefile.kvm index 4277b983cace..b4894cb56861 100644 --- a/tools/testing/selftests/kvm/Makefile.kvm +++ b/tools/testing/selftests/kvm/Makefile.kvm @@ -226,7 +226,7 @@ LINUX_TOOL_ARCH_INCLUDE = $(top_srcdir)/tools/arch/$(ARCH)/include CFLAGS += -Wall -Wstrict-prototypes -Wuninitialized -O2 -g -std=gnu99 \ -Wno-gnu-variable-sized-type-not-at-end -MD -MP -DCONFIG_64BIT \ -fno-builtin-memcmp -fno-builtin-memcpy \ - -fno-builtin-memset -fno-builtin-strnlen \ + -fno-builtin-memset -fno-builtin-strnlen -Wno-address-of-packed-member \ -fno-stack-protector -fno-PIE -fno-strict-aliasing \ -I$(LINUX_TOOL_INCLUDE) -I$(LINUX_TOOL_ARCH_INCLUDE) \ -I$(LINUX_HDR_PATH) -Iinclude -I$(save.valid_bitmap); \ + } \ + \ + static __always_inline u64 ghcb_get_##field(struct ghcb *ghcb) \ + { \ + return ghcb->save.field; \ + } \ + \ + static __always_inline u64 ghcb_get_##field##_if_valid(struct ghcb *ghcb) \ + { \ + return ghcb_##field##_is_valid(ghcb) ? ghcb->save.field : 0; \ + } \ + \ + static __always_inline void ghcb_set_##field(struct ghcb *ghcb, u64 value) \ + { \ + __set_bit(GHCB_BITMAP_IDX(field), \ + (unsigned long *)&ghcb->save.valid_bitmap); \ + ghcb->save.field = value; \ + } + +DEFINE_GHCB_ACCESSORS(cpl) +DEFINE_GHCB_ACCESSORS(rip) +DEFINE_GHCB_ACCESSORS(rsp) +DEFINE_GHCB_ACCESSORS(rax) +DEFINE_GHCB_ACCESSORS(rcx) +DEFINE_GHCB_ACCESSORS(rdx) +DEFINE_GHCB_ACCESSORS(rbx) +DEFINE_GHCB_ACCESSORS(rbp) +DEFINE_GHCB_ACCESSORS(rsi) +DEFINE_GHCB_ACCESSORS(rdi) +DEFINE_GHCB_ACCESSORS(r8) +DEFINE_GHCB_ACCESSORS(r9) +DEFINE_GHCB_ACCESSORS(r10) +DEFINE_GHCB_ACCESSORS(r11) +DEFINE_GHCB_ACCESSORS(r12) +DEFINE_GHCB_ACCESSORS(r13) +DEFINE_GHCB_ACCESSORS(r14) +DEFINE_GHCB_ACCESSORS(r15) +DEFINE_GHCB_ACCESSORS(sw_exit_code) +DEFINE_GHCB_ACCESSORS(sw_exit_info_1) +DEFINE_GHCB_ACCESSORS(sw_exit_info_2) +DEFINE_GHCB_ACCESSORS(sw_scratch) +DEFINE_GHCB_ACCESSORS(xcr0) + #endif /* SELFTEST_KVM_SVM_H */