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| author | Ard Biesheuvel <ardb@kernel.org> | 2025-04-10 15:41:25 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2025-04-12 11:13:05 +0200 |
| commit | 221df25fdf827b1fe5b904c6a396af06461a32f6 (patch) | |
| tree | 6bf451a45b75fa055249da6e5c2f359960a428aa /arch/x86/boot/compressed | |
| parent | x86/boot: Drop RIP_REL_REF() uses from SME startup code (diff) | |
| download | linux-221df25fdf827b1fe5b904c6a396af06461a32f6.tar.gz linux-221df25fdf827b1fe5b904c6a396af06461a32f6.zip | |
x86/sev: Prepare for splitting off early SEV code
Prepare for splitting off parts of the SEV core.c source file into a
file that carries code that must tolerate being called from the early
1:1 mapping. This will allow special build-time handling of thise code,
to ensure that it gets generated in a way that is compatible with the
early execution context.
So create a de-facto internal SEV API and put the definitions into
sev-internal.h. No attempt is made to allow this header file to be
included in arbitrary other sources - this is explicitly not the intent.
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Cc: Dionna Amalie Glaze <dionnaglaze@google.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Kees Cook <keescook@chromium.org>
Cc: Kevin Loughlin <kevinloughlin@google.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Tom Lendacky <thomas.lendacky@amd.com>
Cc: linux-efi@vger.kernel.org
Link: https://lore.kernel.org/r/20250410134117.3713574-20-ardb+git@google.com
Diffstat (limited to 'arch/x86/boot/compressed')
| -rw-r--r-- | arch/x86/boot/compressed/sev.c | 15 |
1 files changed, 10 insertions, 5 deletions
diff --git a/arch/x86/boot/compressed/sev.c b/arch/x86/boot/compressed/sev.c index bb55934c1cee..6eadd790f4e5 100644 --- a/arch/x86/boot/compressed/sev.c +++ b/arch/x86/boot/compressed/sev.c @@ -126,20 +126,25 @@ static bool fault_in_kernel_space(unsigned long address) #include "../../lib/inat.c" #include "../../lib/insn.c" -/* Include code for early handlers */ -#include "../../coco/sev/shared.c" +extern struct svsm_ca *boot_svsm_caa; +extern u64 boot_svsm_caa_pa; -static struct svsm_ca *svsm_get_caa(void) +struct svsm_ca *svsm_get_caa(void) { return boot_svsm_caa; } -static u64 svsm_get_caa_pa(void) +u64 svsm_get_caa_pa(void) { return boot_svsm_caa_pa; } -static int svsm_perform_call_protocol(struct svsm_call *call) +int svsm_perform_call_protocol(struct svsm_call *call); + +/* Include code for early handlers */ +#include "../../coco/sev/shared.c" + +int svsm_perform_call_protocol(struct svsm_call *call) { struct ghcb *ghcb; int ret; |