Re: [i386] Questions regarding provisional page tables initialization

From: Andreas Schwab
Date: Mon Jul 02 2007 - 05:18:20 EST


"Ahmed S. Darwish" <darwish.07@xxxxxxxxx> 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@xxxxxxx
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
PGP key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5
"And now for something completely different."
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/