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Date:      Mon, 23 Oct 2000 08:33:04 -0400
From:      "Christopher Harrer" <charrer@alacritech.com>
To:        "Freebsd-Hackers" <freebsd-hackers@FreeBSD.ORG>
Subject:   Cache Questions
Message-ID:  <POELKPJGDHAPIPMEMHGAGEHOCIAA.charrer@alacritech.com>

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Hello All,

We're working on a driver for a PCI card, we're currently running into a
problem that's symptomatic of a cache coherency problem.  We have a area of
memory that we manipulate and pass a physical address to our card.  In other
OS's (Linux, NT), before we manipulate this memory area, we mark the area as
non-cachable.  Are there similar operations/system calls we can use in
FreeBSD?  Are there any FAQ's, Docs or man-pages that explain memory
usage/attributes?

Thanks very much!

Chris



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