diff mbox series

[v3,1/5] x86/boot: Drop unused sev_enable() fallback

Message ID 20250422100728.208479-8-ardb+git@google.com
State New
Headers show
Series efi: Don't initalize SEV-SNP from the EFI stub | expand

Commit Message

Ard Biesheuvel April 22, 2025, 10:07 a.m. UTC 
From: Ard Biesheuvel <ardb@kernel.org>

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 <ardb@kernel.org>
---
 arch/x86/boot/compressed/misc.h | 11 -----------
 1 file changed, 11 deletions(-)
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Patch

diff --git a/arch/x86/boot/compressed/misc.h b/arch/x86/boot/compressed/misc.h
index dd8d1a85f671..1e950bc5b085 100644
--- a/arch/x86/boot/compressed/misc.h
+++ b/arch/x86/boot/compressed/misc.h
@@ -144,17 +144,6 @@  void snp_set_page_private(unsigned long paddr);
 void snp_set_page_shared(unsigned long paddr);
 void sev_prep_identity_maps(unsigned long top_level_pgt);
 #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)