linux-kernel - Re: [i386] Questions regarding provisional page tables initialization

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Message-ID: <je8x9zrwof.fsf@sykes.suse.de>
Date:	Mon, 02 Jul 2007 11:18:08 +0200
From:	Andreas Schwab <schwab@...e.de>
To:	"Ahmed S. Darwish" <darwish.07@...il.com>
Cc:	Jeremy Fitzhardinge <jeremy@...p.org>, linux-kernel@...r.kernel.org
Subject: Re: [i386] Questions regarding provisional page tables initialization

"Ahmed S. Darwish" <darwish.07@...il.com> writes:

> yes, but isn't the displacement here (0x007) a _bytes_ displacement ?. so
> effectively, %ecx now contains physical address of pg0 + 7bytes. Is it A 
> meaningful place/address ?.

It's not pg0 + 7bytes, it is pg0 plus 3 flag bits.  Since a page address
is always page aligned, the low bits are reused for flags.

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@...e.de
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
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