ae4b688db2
This function measures whether the FPU/SSE state can be touched in interrupt context. If the interrupted code is in user space or has no valid FPU/SSE context (CR0.TS == 1), FPU/SSE state can be used in IRQ or soft_irq context too. This is used by AES-NI accelerated AES implementation and PCLMULQDQ accelerated GHASH implementation. v3: - Renamed to irq_fpu_usable to reflect the purpose of the function. v2: - Renamed to irq_is_fpu_using to reflect the real situation. Signed-off-by: Huang Ying <ying.huang@intel.com> CC: H. Peter Anvin <hpa@zytor.com> Signed-off-by: H. Peter Anvin <hpa@zytor.com> |
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| .. | ||
| aes_glue.c | ||
| aes-i586-asm_32.S | ||
| aes-x86_64-asm_64.S | ||
| aesni-intel_asm.S | ||
| aesni-intel_glue.c | ||
| crc32c-intel.c | ||
| fpu.c | ||
| Makefile | ||
| salsa20_glue.c | ||
| salsa20-i586-asm_32.S | ||
| salsa20-x86_64-asm_64.S | ||
| twofish_glue.c | ||
| twofish-i586-asm_32.S | ||
| twofish-x86_64-asm_64.S | ||