linux-kernel - Re: [OpenRISC] [PATCH 01/13] openrisc: use shadow registers to save regs on exception

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: <CAMuHMdWku57oe4Gpm6nW4jK921d4tEzYby8eyC15-oRtXca9fQ@mail.gmail.com>
Date:   Fri, 1 Sep 2017 10:02:46 +0200
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Stafford Horne <shorne@...il.com>
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Jonas Bonn <jonas@...thpole.se>,
        Masahiro Yamada <yamada.masahiro@...ionext.com>,
        Openrisc <openrisc@...ts.librecores.org>,
        Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [OpenRISC] [PATCH 01/13] openrisc: use shadow registers to save
 regs on exception

On Wed, Aug 30, 2017 at 11:58 PM, Stafford Horne <shorne@...il.com> wrote:
> --- a/arch/openrisc/Kconfig
> +++ b/arch/openrisc/Kconfig
> @@ -121,6 +121,16 @@ config OPENRISC_NO_SPR_SR_DSX
>           Say N here if you know that your OpenRISC processor has
>           SPR_SR_DSX bit implemented. Say Y if you are unsure.
>
> +config OPENRISC_HAVE_SHADOW_GPRS
> +       bool "Support for shadow gpr files"

default y if SMP?

> +       help
> +         Say Y here if your OpenRISC processor features shadowed
> +         register files. They will in such case be used as a
> +         scratch reg storage on exception entry.
> +
> +         On SMP systems, this feature is mandatory.
> +         On a unicore system it's safe to say N here if you are unsure.
> +

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds