"Ahmed S. Darwish" <[email protected]> writes:
> page_pde_offset = (__PAGE_OFFSET >> 20)
> movl %ecx,(%edx) /* Store identity PDE entry */
> movl %ecx,page_pde_offset(%edx) /* Store kernel PDE entry */
>
> Why the pde_offset is PAGE_OFFSET >> 20 instead of PAGE_OFFSET >> 22 ?
> * 22 to right shift the whole page_shift (12) and pgdir_shift (10) bits.
4 is the element size.
Andreas.
--
Andreas Schwab, SuSE Labs, [email protected]
SuSE Linux Products GmbH, Maxfeldstraße 5, 90409 Nürnberg, Germany
PGP key fingerprint = 58CA 54C7 6D53 942B 1756 01D3 44D5 214B 8276 4ED5
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