From 05ce314ba5155d57c86f8f276cb17f78ac5fb4f0 Mon Sep 17 00:00:00 2001 From: Ard Biesheuvel Date: Thu, 28 Aug 2025 12:22:17 +0200 Subject: [PATCH] x86/sev: Export startup routines for later use Create aliases that expose routines that are part of the startup code to other code in the core kernel, so that they can be called later as well. Signed-off-by: Ard Biesheuvel Signed-off-by: Borislav Petkov (AMD) Link: https://lore.kernel.org/20250828102202.1849035-38-ardb+git@google.com --- arch/x86/boot/startup/exports.h | 14 ++++++++++++++ arch/x86/kernel/vmlinux.lds.S | 2 ++ 2 files changed, 16 insertions(+) create mode 100644 arch/x86/boot/startup/exports.h diff --git a/arch/x86/boot/startup/exports.h b/arch/x86/boot/startup/exports.h new file mode 100644 index 0000000000000..01d2363dc445f --- /dev/null +++ b/arch/x86/boot/startup/exports.h @@ -0,0 +1,14 @@ + +/* + * The symbols below are functions that are implemented by the startup code, + * but called at runtime by the SEV code residing in the core kernel. + */ +PROVIDE(early_set_pages_state = __pi_early_set_pages_state); +PROVIDE(early_snp_set_memory_private = __pi_early_snp_set_memory_private); +PROVIDE(early_snp_set_memory_shared = __pi_early_snp_set_memory_shared); +PROVIDE(get_hv_features = __pi_get_hv_features); +PROVIDE(sev_es_terminate = __pi_sev_es_terminate); +PROVIDE(snp_cpuid = __pi_snp_cpuid); +PROVIDE(snp_cpuid_get_table = __pi_snp_cpuid_get_table); +PROVIDE(svsm_issue_call = __pi_svsm_issue_call); +PROVIDE(svsm_process_result_codes = __pi_svsm_process_result_codes); diff --git a/arch/x86/kernel/vmlinux.lds.S b/arch/x86/kernel/vmlinux.lds.S index 4fa0be732af10..5d5e3a95e1f9b 100644 --- a/arch/x86/kernel/vmlinux.lds.S +++ b/arch/x86/kernel/vmlinux.lds.S @@ -535,3 +535,5 @@ xen_elfnote_entry_value = xen_elfnote_phys32_entry_value = ABSOLUTE(xen_elfnote_phys32_entry) + ABSOLUTE(pvh_start_xen - LOAD_OFFSET); #endif + +#include "../boot/startup/exports.h" -- 2.47.3