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  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]
Date:   Thu, 06 Jun 2019 23:52:50 +0100
From:   David Howells <>
To:     Eugeniu Rosca <>
        Eugeniu Rosca <>
Subject: Re: [PATCH 10/10] Add sample notification program [ver #3]

Eugeniu Rosca <> wrote:

> How about arm64? Do you intend to enable cross-compilation?

There's no guarantee that a cross-compiler can actually build userspace apps,
though I haven't intended to encode anything against that in the Makefile.

> > +			asm ("lfence" : : : "memory" );
> [..]
> > +			asm("mfence" ::: "memory");
> FWIW, trying to cross-compile it returned:
> aarch64-linux-gnu-gcc -I../../usr/include -I../../include  watch_test.c   -o watch_test
> /tmp/ccDXYynm.s: Assembler messages:
> /tmp/ccDXYynm.s:471: Error: unknown mnemonic `lfence' -- `lfence'
> /tmp/ccDXYynm.s:568: Error: unknown mnemonic `mfence' -- `mfence'

Yeah.  I need to use C-standard __atomic_* stuff.


Powered by blists - more mailing lists