From: Peter Zijlstra <peterz@infradead.org>
To: Andy Lutomirski <luto@amacapital.net>
Cc: "Frédéric Weisbecker" <fweisbec@gmail.com>,
"Borislav Petkov" <bp@alien8.de>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>
Subject: Re: Can I use static keys from asm?
Date: Tue, 18 Aug 2015 04:24:28 +0200 [thread overview]
Message-ID: <20150818022428.GH20948@worktop> (raw)
In-Reply-To: <CALCETrWzSDe6SiU_nUK+vZcHKbWGbmujVdnQFDMFsG=1O-ofqA@mail.gmail.com>
On Mon, Aug 17, 2015 at 06:34:08PM -0700, Andy Lutomirski wrote:
> 2. Context tracking enabled in config but completely disabled at
> runtime. Distros do this. I want to nop out the context tracking
> hooks. We have a static_key for this, but half the hooks are in asm.
> To unsuck case 2, static keys in asm would help. Can I do that? It
> would be even better if I could do that in 4.3.
I think Anton did a number of patches to enable static_key usage in asm
on PowerPC. x86 would need a bit of work but nothing makes it
fundamentally impossible.
prev parent reply other threads:[~2015-08-18 2:24 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-18 1:34 Can I use static keys from asm? Andy Lutomirski
2015-08-18 2:24 ` Peter Zijlstra [this message]
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