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git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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kernel
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linux
x86/sgx: Use ENCLS mnemonic in <kernel/cpu/sgx/encls.h>
Current minimum required version of binutils is 2.30, which supports ENCLS
instruction mnemonic.
Replace the byte-wise specification of ENCLS with this proper mnemonic.
No functional change intended.
Signed-off-by: Uros Bizjak <ubizjak@gmail.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Reviewed-by: Jarkko Sakkinen <jarkko@kernel.org>
Link: https://lore.kernel.org/20250616085716.158942-1-ubizjak@gmail.com
authored by Uros Bizjak and committed by Borislav Petkov (AMD) 13bdfb53 045f6a6e
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arch/x86/kernel/cpu/sgx/encls.h
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-3
arch/x86/kernel/cpu/sgx/encls.h
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({ \
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int ret; \
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asm volatile( \
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-
"1: .byte 0x0f, 0x01, 0xcf;\n\t" \
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+
"1: encls\n" \
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"2:\n" \
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_ASM_EXTABLE_TYPE(1b, 2b, EX_TYPE_FAULT_SGX) \
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: "=a"(ret) \
···
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({ \
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int ret; \
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asm volatile( \
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"1: .byte 0x0f, 0x01, 0xcf;\n\t" \
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" xor %%eax,%%eax;\n" \
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"1: encls\n\t" \
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"xor %%eax,%%eax\n" \
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"2:\n" \
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_ASM_EXTABLE_TYPE(1b, 2b, EX_TYPE_FAULT_SGX) \
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: "=a"(ret), "=b"(rbx_out) \