linux-kernel - Re: [PATCH 0/9] rework of extended state handling, LWP support

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Date:	Fri, 2 Dec 2011 12:20:50 +0100
From:	Hans Rosenfeld <hans.rosenfeld@....com>
To:	"H. Peter Anvin" <hpa@...or.com>
CC:	Andi Kleen <andi@...stfloor.org>, <tglx@...utronix.de>,
	<mingo@...e.hu>, <suresh.b.siddha@...el.com>, <eranian@...gle.com>,
	<brgerst@...il.com>, <robert.richter@....com>,
	<Andreas.Herrmann3@....com>, <x86@...nel.org>,
	<linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 0/9] rework of extended state handling, LWP support

On Thu, Dec 01, 2011 at 06:01:27PM -0800, H. Peter Anvin wrote:
> On 12/01/2011 12:36 PM, Hans Rosenfeld wrote:
> > 
> > So I assume, if you have 10000s of processes on a legacy 32bit system
> > that never do any FPU stuff or SSE optimizations, you might indeed waste
> > a couple of megabytes. I don't think thats very realistic, but that's
> > just my opinion.
> > 
> 
> A couple of megabytes of *lowmem*...

Ok, I'll rework that part, so that preallocation only happens on systems
that support non-lazy states. That means patch #7 is going away and
patch #8 is getting slightly bigger. This may take a few days as I have
to test that again.

Meanwhile, could you please take a look at patches #1 to #6?


Hans


-- 
%SYSTEM-F-ANARCHISM, The operating system has been overthrown

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