From: Jeffrey Walton <noloader@gmail.com>
To: kernelnewbies <kernelnewbies@kernelnewbies.org>
Subject: HWCAP for SHA-1 and SHA-256
Date: Sat, 22 Feb 2020 21:36:42 -0500 [thread overview]
Message-ID: <CAH8yC8kpJ5QpavDWz_frYcwmcA2g17ho+Xcz3yrNCN-Hpf1vNg@mail.gmail.com> (raw)
Hi Everyone,
I'm having trouble finding the HWCAP_* or HWCAP2_* for SHA-1 and
SHA-256 on x86 machines.
Poking around Torvald's GitHub does not reveal them in either auxvec.h
or hwcap2.h. Also see
https://github.com/torvalds/linux/tree/master/arch/x86/include/uapi/asm.
Grepping my local machine (x86_64) provides them for arm64, but not
x86 (WTF?):
$ grep -IR HWCAP2_ /usr/include
/usr/include/x86_64-linux-gnu/asm/hwcap2.h:#ifndef _ASM_X86_HWCAP2_H
/usr/include/x86_64-linux-gnu/asm/hwcap2.h:#define _ASM_X86_HWCAP2_H
/usr/include/x86_64-linux-gnu/asm/hwcap2.h:#define
HWCAP2_RING3MWAIT (1 << 0)
What are the HWCAP_* or HWCAP2_* to use for SHA-1 and SHA-256 on x86 machines?
Thanks in advance.
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reply other threads:[~2020-02-23 2:38 UTC|newest]
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