diff options
| author | Tom Lendacky <thomas.lendacky@amd.com> | 2017-07-17 16:10:35 -0500 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-07-18 20:23:26 +0200 |
| commit | aca20d5462149333ba8b24a4a352be5b7a00dfd2 (patch) | |
| tree | ac59619797ace1cc59778ddaf04e10264629ca85 /arch/x86/include/asm/mem_encrypt.h | |
| parent | 7375ae3a0b79ea072f4c672039f08f5db633b9e1 (diff) | |
x86/mm: Add support to make use of Secure Memory Encryption
Add support to check if SME has been enabled and if memory encryption
should be activated (checking of command line option based on the
configuration of the default state). If memory encryption is to be
activated, then the encryption mask is set and the kernel is encrypted
"in place."
Signed-off-by: Tom Lendacky <thomas.lendacky@amd.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Alexander Potapenko <glider@google.com>
Cc: Andrey Ryabinin <aryabinin@virtuozzo.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brijesh Singh <brijesh.singh@amd.com>
Cc: Dave Young <dyoung@redhat.com>
Cc: Dmitry Vyukov <dvyukov@google.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Larry Woodman <lwoodman@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Toshimitsu Kani <toshi.kani@hpe.com>
Cc: kasan-dev@googlegroups.com
Cc: kvm@vger.kernel.org
Cc: linux-arch@vger.kernel.org
Cc: linux-doc@vger.kernel.org
Cc: linux-efi@vger.kernel.org
Cc: linux-mm@kvack.org
Link: http://lkml.kernel.org/r/5f0da2fd4cce63f556117549e2c89c170072209f.1500319216.git.thomas.lendacky@amd.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/include/asm/mem_encrypt.h')
| -rw-r--r-- | arch/x86/include/asm/mem_encrypt.h | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/x86/include/asm/mem_encrypt.h b/arch/x86/include/asm/mem_encrypt.h index 7122c365c2a3..8e618fcf1f7c 100644 --- a/arch/x86/include/asm/mem_encrypt.h +++ b/arch/x86/include/asm/mem_encrypt.h @@ -17,6 +17,8 @@ #include <linux/init.h> +#include <asm/bootparam.h> + #ifdef CONFIG_AMD_MEM_ENCRYPT extern unsigned long sme_me_mask; @@ -38,7 +40,7 @@ void __init sme_unmap_bootdata(char *real_mode_data); void __init sme_early_init(void); void __init sme_encrypt_kernel(void); -void __init sme_enable(void); +void __init sme_enable(struct boot_params *bp); /* Architecture __weak replacement functions */ void __init mem_encrypt_init(void); @@ -60,7 +62,7 @@ static inline void __init sme_unmap_bootdata(char *real_mode_data) { } static inline void __init sme_early_init(void) { } static inline void __init sme_encrypt_kernel(void) { } -static inline void __init sme_enable(void) { } +static inline void __init sme_enable(struct boot_params *bp) { } #endif /* CONFIG_AMD_MEM_ENCRYPT */ |