linux-kernel - RE: [PATCH] MIPS: VDSO: Always select -msoft-float

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: <6D39441BF12EF246A7ABCE6654B0235380AB822B@HHMAIL01.hh.imgtec.org>
Date:   Fri, 4 Nov 2016 16:55:05 +0000
From:   Matthew Fortune <Matthew.Fortune@...tec.com>
To:     Maciej Rozycki <Maciej.Rozycki@...tec.com>,
        Guenter Roeck <linux@...ck-us.net>
CC:     Ralf Baechle <ralf@...ux-mips.org>,
        "linux-mips@...ux-mips.org" <linux-mips@...ux-mips.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        James Hogan <James.Hogan@...tec.com>
Subject: RE: [PATCH] MIPS: VDSO: Always select -msoft-float

Maciej Rozycki <Maciej.Rozycki@...tec.com> writes:
> On Fri, 4 Nov 2016, Guenter Roeck wrote:
> 
> > > As above, unless absolutely critical to have floating point code
> > > then the vDSO should just avoid all FP related issues and build
> soft-float.
...
> > Anyway, isn't the kernel supposed to not use floating point operations
> > in the first place ? Is this different for vDSO ?
> 
>  This code is executed in the user mode so while floating-point code may
> not be needed there, not at least right now, there's actually nothing
> which should stop us from from adding some should such a need arise.

Indeed. For now though the switch to -msoft-float is the simplest solution
isn't it?

Matthew