From: Paul Mackerras <paulus@samba.org>
To: jmar@terayon.com
Cc: "linuxppc-embedded@lists.linuxppc.org"
<linuxppc-embedded@lists.linuxppc.org>
Subject: Re: 8260 and HPTE
Date: Thu, 12 Sep 2002 14:19:08 +1000 (EST) [thread overview]
Message-ID: <15744.5564.428016.887779@argo.ozlabs.ibm.com> (raw)
In-Reply-To: <3D7FD2A3.EC0E0F06@terayon.com>
Jim Mar writes:
> I am using 2.4.18 on a proprietary 8260 board. It appears that
> CPU_FTR_HPTE_TABLE is not supported for the 8260(603e). Therefore,
> MMU_init_hw in ppc_mmu.c returns without patching create_hpte and
> flush_hash_page in hashtable.S or allocating hash memory.
>
> However, a Data Access Exception(0x300) eventually calls create_hpte,
> trashing my memory.
This is fixed in the official 2.4.19 and in the current linuxppc_2_4
and linuxppc_2_4_devel trees. The code that calls hash_page (which calls
create_hpte) in the DSI handler is in a feature section, which means
it gets overwritten with NOPs if we don't have a hash table.
Paul.
** Sent via the linuxppc-embedded mail list. See http://lists.linuxppc.org/
prev parent reply other threads:[~2002-09-12 4:19 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-09-11 23:32 8260 and HPTE Jim Mar
2002-09-12 4:19 ` Paul Mackerras [this message]
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