x86/virt/tdx: Handle SEAMCALL no entropy error in common code

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Some SEAMCALLs use the RDRAND hardware and can fail for the same reasons
as RDRAND.  Use the kernel RDRAND retry logic for them.

There are three __seamcall*() variants.  Do the SEAMCALL retry in common
code and add a wrapper for each of them.

Signed-off-by: Kai Huang <kai.huang@intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: Kirill A. Shutemov <kirll.shutemov@linux.intel.com>
Reviewed-by: Kuppuswamy Sathyanarayanan <sathyanarayanan.kuppuswamy@linux.intel.com>
Reviewed-by: Dave Hansen <dave.hansen@linux.intel.com>
Link: https://lore.kernel.org/all/20231208170740.53979-4-dave.hansen%40intel.com

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Kai Huang 2023-12-08 09:07:24 -08:00 • committed by Dave Hansen

parent 3115cabd93

commit 1e66a7e275

1 changed files with 26 additions and 0 deletions

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arch/x86/include/asm/tdx.h

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