From: Borislav Petkov <bp@alien8.de>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Andy Lutomirski <luto@kernel.org>,
x86@kernel.org, Andi Kleen <andi@firstfloor.org>,
lkml@vger.kernel.org, Oleg Nesterov <oleg@redhat.com>,
stable@vger.kernel.org
Subject: Re: [PATCH] x86/traps: Don't for in_interrupt() to return true in IST handlers
Date: Tue, 24 May 2016 11:36:29 +0200 [thread overview]
Message-ID: <20160524093629.GA2388@pd.tnic> (raw)
In-Reply-To: <20160524085945.GE3192@twins.programming.kicks-ass.net>
On Tue, May 24, 2016 at 10:59:45AM +0200, Peter Zijlstra wrote:
> Which use a sequence of: in_nmi(), in_irq(), in_softirq() to pick 1 out
> of 4 possible contexts.
So should we make it cleaner and explicit and define a 5th context of
priorities higher than NMI?
There's some room between those two:
* NMI_MASK: 0x00100000
* PREEMPT_NEED_RESCHED: 0x80000000
--
Regards/Gruss,
Boris.
ECO tip #101: Trim your mails when you reply.
next prev parent reply other threads:[~2016-05-24 9:36 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-24 3:57 [PATCH] x86/traps: Don't for in_interrupt() to return true in IST handlers Andy Lutomirski
2016-05-24 8:59 ` Peter Zijlstra
2016-05-24 9:36 ` Borislav Petkov [this message]
2016-05-24 9:51 ` Peter Zijlstra
2016-05-24 15:43 ` Andy Lutomirski
2016-05-24 17:09 ` Peter Zijlstra
2016-05-24 18:54 ` Andy Lutomirski
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