Messages in this thread | | | Date | Mon, 31 Mar 2003 23:02:51 +0200 | From | Ingo Oeser <> | Subject | Re: 64GB NUMA-Q after pgcl |
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Hi William, hi Andrea,
On Sun, Mar 30, 2003 at 09:22:14PM -0800, William Lee Irwin III wrote: > Miscellaneous side effects happen, like follow_page() and > get_user_pages() need to return pfn's instead of struct pages.
Hmm, but you know, that users of get_user_pages() play games with pages? They need to lock them into memory, mark them eventually dirty, map them to a struct scatterlist and much more.
I worked on an API (I called it the page-walk-api), to make this more and more transparent.
So if this work will go into 2.6.x, then the page-walk-API will be needed, or else the driver writers playing tricks with virtual<->physical<->bus address conversions will go nuts.
So which kernel is the target of this development?
Regards
Ingo Oeser - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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