From: Ard Biesheuvel Date: Tue, 9 Sep 2025 08:06:33 +0000 (+0200) Subject: x86/boot: Drop unused sev_enable() fallback X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=a3e69071289288e2721ba15254e7c5274eddd05a;p=thirdparty%2Flinux.git x86/boot: Drop unused sev_enable() fallback The misc.h header is not included by the EFI stub, which is the only C caller of sev_enable(). This means the fallback for cases where CONFIG_AMD_MEM_ENCRYPT is not set is never used, so it can be dropped. Signed-off-by: Ard Biesheuvel Signed-off-by: Borislav Petkov (AMD) Reviewed-by: Tom Lendacky Link: https://patch.msgid.link/20250909080631.2867579-6-ardb+git@google.com --- diff --git a/arch/x86/boot/compressed/misc.h b/arch/x86/boot/compressed/misc.h index db1048621ea2e..fd855e32c9b9e 100644 --- a/arch/x86/boot/compressed/misc.h +++ b/arch/x86/boot/compressed/misc.h @@ -152,17 +152,6 @@ bool insn_has_rep_prefix(struct insn *insn); void sev_insn_decode_init(void); bool early_setup_ghcb(void); #else -static inline void sev_enable(struct boot_params *bp) -{ - /* - * bp->cc_blob_address should only be set by boot/compressed kernel. - * Initialize it to 0 unconditionally (thus here in this stub too) to - * ensure that uninitialized values from buggy bootloaders aren't - * propagated. - */ - if (bp) - bp->cc_blob_address = 0; -} static inline void snp_check_features(void) { } static inline void sev_es_shutdown_ghcb(void) { } static inline bool sev_es_check_ghcb_fault(unsigned long address)