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Re: Memory corruption

To: "Harald Koerfgen" <Harald.Koerfgen@home.ivm.de>
Subject: Re: Memory corruption
From: Warner Losh <imp@village.org>
Date: Wed, 07 Jul 1999 19:51:37 -0600
Cc: Ralf Baechle <ralf@uni-koblenz.de>, linux-mips@vger.rutgers.edu, linux-mips@fnet.fr, linux@engr.sgi.com, Ulf Carlsson <ulfc@thepuffingroup.com>, "William J. Earl" <wje@fir.engr.sgi.com>
In-reply-to: Your message of "Wed, 07 Jul 1999 23:08:57 +0200." <XFMail.990707230857.Harald.Koerfgen@home.ivm.de>
References: <XFMail.990707230857.Harald.Koerfgen@home.ivm.de>
In message <XFMail.990707230857.Harald.Koerfgen@home.ivm.de> Harald Koerfgen 
writes:
: That's definitely true for R3k DECstations, and no, flushing the icache in
: flush_tlb_page() does not help. I have added cacheflushing to all tlb 
routines,
: copy_page and even rw_swap_page_base() and swap_after_unlock_page() without
: success.

Don'y you want to flush the dcache as well?  I think that you can run
into problems when you have a dirty dcache and then dma into the pages
that are dirty.  Instant karma corruption, no?  Or am I thinking of
some other problem?

Warner

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