linux-kernel - RE: [PATCH 1/3] arc: vdk: Disable halt on reset

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Date:   Wed, 1 Feb 2017 20:03:25 +0000
From:   Alexey Brodkin <Alexey.Brodkin@...opsys.com>
To:     Vineet Gupta <Vineet.Gupta1@...opsys.com>
CC:     Ruud Derwig <Ruud.Derwig@...opsys.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-snps-arc@...ts.infradead.org" 
        <linux-snps-arc@...ts.infradead.org>
Subject: RE: [PATCH 1/3] arc: vdk: Disable halt on reset

Hi Vineet,

> -----Original Message-----
> From: Vineet Gupta [mailto:vgupta@...opsys.com]
> Sent: Wednesday, February 1, 2017 10:56 PM
> To: Alexey Brodkin <Alexey.Brodkin@...opsys.com>
> Cc: Ruud Derwig <rderwig@...opsys.com>; linux-kernel@...r.kernel.org;
> linux-snps-arc@...ts.infradead.org
> Subject: Re: [PATCH 1/3] arc: vdk: Disable halt on reset
> 
> On 02/01/2017 09:52 AM, Alexey Brodkin wrote:
> >> The whole point of adding this to defconfig is to override the default from
> Kconfig ?
> > Not anymore :)
> >
> > Since commit c4c9a040ecb7 ("clocksource: import ARC timer driver"),
> > see
> > http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/commit/
> > ?id=c4c9a040ecb7297e011e579f5a9cc280e42d725f
> > we have this:
> > ---------------------->8----------------------
> > config ISA_ARCV2
> > 	bool "ARC ISA v2"
> > 	select ARC_TIMERS_64BIT
> > ---------------------->8----------------------
> >
> > which really means if one selects ISA_ARCV2 then ARC_TIMERS_64BIT gets
> > selected automatically and there's no way to override it from either
> menuconfig or defconfig.
> 
> Bummer - this means VDK based off 4.9+ kernel might be affected with nsim
> GFRC issue !

One note here - I think it only affects 4.10+ kernels.

-Aexey