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| author | Kai Huang <kai.huang@intel.com> | 2023-08-15 23:01:56 +1200 |
|---|---|---|
| committer | Dave Hansen <dave.hansen@linux.intel.com> | 2023-09-11 16:32:23 -0700 |
| commit | 03a423d40cb30e0e1cb77a801acb56ddb0bf6f5e (patch) | |
| tree | 32b488fa8be8093f770682286cbfce7a44b0eedd /arch/x86/coco | |
| parent | 5d092b66119d774853cc9308522620299048a662 (diff) | |
| download | linux-stable-03a423d40cb30e0e1cb77a801acb56ddb0bf6f5e.tar.gz linux-stable-03a423d40cb30e0e1cb77a801acb56ddb0bf6f5e.tar.bz2 linux-stable-03a423d40cb30e0e1cb77a801acb56ddb0bf6f5e.zip | |
x86/tdx: Skip saving output regs when SEAMCALL fails with VMFailInvalid
If SEAMCALL fails with VMFailInvalid, the SEAM software (e.g., the TDX
module) won't have chance to set any output register. Skip saving the
output registers to the structure in this case.
Also, as '.Lno_output_struct' is the very last symbol before RET, rename
it to '.Lout' to make it short.
Opportunistically make the asm directives unindented.
Suggested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Kai Huang <kai.huang@intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/all/704088f5b4d72c7e24084f7f15bd1ac5005b7213.1692096753.git.kai.huang%40intel.com
Diffstat (limited to 'arch/x86/coco')
| -rw-r--r-- | arch/x86/coco/tdx/tdcall.S | 3 |
1 files changed, 0 insertions, 3 deletions
diff --git a/arch/x86/coco/tdx/tdcall.S b/arch/x86/coco/tdx/tdcall.S index 2eca5f43734f..e5d4b7d8ecd4 100644 --- a/arch/x86/coco/tdx/tdcall.S +++ b/arch/x86/coco/tdx/tdcall.S @@ -78,10 +78,7 @@ * Return status of TDCALL via RAX. */ SYM_FUNC_START(__tdx_module_call) - FRAME_BEGIN TDX_MODULE_CALL host=0 - FRAME_END - RET SYM_FUNC_END(__tdx_module_call) /* |