linux-kernel - RE: arch/x86/lib/copy_mc.c:30:1: warning: no previous prototype for 'copy_mc_fragile_handle

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <10c9fdc0ace04013b7d4999643aa8b21@intel.com>
Date:   Wed, 9 Jun 2021 23:55:30 +0000
From:   "Luck, Tony" <tony.luck@...el.com>
To:     "Williams, Dan J" <dan.j.williams@...el.com>, lkp <lkp@...el.com>
CC:     "kbuild-all@...ts.01.org" <kbuild-all@...ts.01.org>,
        "Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>,
        Borislav Petkov <bp@...e.de>
Subject: RE: arch/x86/lib/copy_mc.c:30:1: warning: no previous prototype for
 'copy_mc_fragile_handle_tail'

> This routine is only ever called from ASM code, so the fact that there
> is no C declaration is expected.

Does the asm code really need to call back into C?

Could you just have the asm code do "jmp .L_read_trailing_bytes" (might need to only do that if %ecx is non-zero)?

-Tony