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Date: Tue, 21 Jan 2003 16:15:28 +0100
From: Pavel Machek <pavel@ucw.cz>
To: Wolfgang Fritz <wolfgang.fritz@gmx.net>
Cc: linux-kernel@vger.kernel.org
Subject: Re: swsuspend: possible with VIA Eden processor? Or alternatives?
Message-ID: <20030121151524.GA2487@elf.ucw.cz>
References: <b0c20t$rt$1@fritz38552.news.dfncis.de> <20030120125100.GA27330@codemonkey.org.uk> <b0h6qr$hqs$1@fritz38552.news.dfncis.de>
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Hi!

> > > the swsuspend mini howto says that a processor with pse/pse36 feature 
> > is > required for swsupend in 2.4.
> > > 
> > > So I am obviously out of luck with 2.4 kernels, but what about 2.5 (the 
> > > mini-howto is silent here)?
> >
> >>From include/asm-i386/suspend.h
> >
> >static inline void
> >arch_prepare_suspend(void)
> >{
> >    if (!cpu_has_pse)
> >        panic("pse required");
> >}
> >
> I assume this is from a 2.5 kernel (I have no source tree available 
> here). I'll check that tomorrow in the office.

If it is not in 2.4.X it only means 2.4.X will randomly flip bits in
memory during resume.

> >There's really no requirement that you *need* PSE to be able to
> >do suspend, but it seems no-one has stepped forward to write the
> >necessary code to support non-PSE afaics.
> >
> I don't even know what pse means :-(

4MB pages, basically.

[Hey, this is great time to learn something new!]
								Pavel

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