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Code Issues Releases Wiki Activity

x86/mem_encrypt: Unbreak the AMD_MEM_ENCRYPT=n build 

Moving mem_encrypt_init() broke the AMD_MEM_ENCRYPT=n because the
declaration of that function was under #ifdef CONFIG_AMD_MEM_ENCRYPT and
the obvious placement for the inline stub was the #else path.

This is a leftover of commit 20f07a044a ("x86/sev: Move common memory
encryption code to mem_encrypt.c") which made mem_encrypt_init() depend on
X86_MEM_ENCRYPT without moving the prototype. That did not fail back then
because there was no stub inline as the core init code had a weak function.

Move both the declaration and the stub out of the CONFIG_AMD_MEM_ENCRYPT
section and guard it with CONFIG_X86_MEM_ENCRYPT.

Fixes: 439e17576e ("init, x86: Move mem_encrypt_init() into arch_cpu_finalize_init()")
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Closes: https://lore.kernel.org/oe-kbuild-all/202306170247.eQtCJPE8-lkp@intel.com/
This commit is contained in:
Thomas Gleixner 2023-06-16 22:15:31 +02:00
parent b81fac906a
commit 0a9567ac5e
1 changed files with 6 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
arch/x86/include/asm/mem_encrypt.h
View File

@ -17,6 +17,12 @@
#include <asm/bootparam.h>
#ifdef CONFIG_X86_MEM_ENCRYPT
void __init mem_encrypt_init(void);
#else
static inline void mem_encrypt_init(void) { }
#endif
#ifdef CONFIG_AMD_MEM_ENCRYPT
extern u64 sme_me_mask;
@ -51,8 +57,6 @@ void __init mem_encrypt_free_decrypted_mem(void);
void __init sev_es_init_vc_handling(void);
void __init mem_encrypt_init(void);
#define __bss_decrypted __section(".bss..decrypted")
#else /* !CONFIG_AMD_MEM_ENCRYPT */
@ -85,8 +89,6 @@ early_set_mem_enc_dec_hypercall(unsigned long vaddr, int npages, bool enc) {}
static inline void mem_encrypt_free_decrypted_mem(void) { }
static inline void mem_encrypt_init(void) { }
#define __bss_decrypted
#endif /* CONFIG_AMD_MEM_ENCRYPT */