linux-kernel - Re: pte_offset_map for ppc assumes HIGHPTE

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Date:	Thu, 26 Jul 2007 01:18:48 +0200
From:	Andreas Schwab <schwab@...e.de>
To:	Satya <satyakiran@...il.com>
Cc:	linuxppc-dev@...abs.org, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org
Subject: Re: pte_offset_map for ppc assumes HIGHPTE

Satya <satyakiran@...il.com> writes:

> hello,
> The implementation of pte_offset_map() for ppc assumes that PTEs are
> kept in highmem (CONFIG_HIGHPTE). There is only one implmentation of
> pte_offset_map() as follows (include/asm-ppc/pgtable.h):
>
> #define pte_offset_map(dir, addr)               \
>          ((pte_t *) kmap_atomic(pmd_page(*(dir)), KM_PTE0) + pte_index(addr))
>
> Shouldn't this be made conditional according to CONFIG_HIGHPTE is
> defined or not

kmap_atomic is always defined with or without CONFIG_HIGHPTE.

> (as implemented in include/asm-i386/pgtable.h) ?

I don't think that needs it either.

Andreas.

-- 
Andreas Schwab, SuSE Labs, schwab@...e.de
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@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/