From: Jack Steiner <steiner@sgi.com>
To: linux-ia64@vger.kernel.org
Subject: Re: [PATCH] (2.4.x bk) efi_memmap_walk_uc
Date: Tue, 29 Jul 2003 23:56:15 +0000 [thread overview]
Message-ID: <marc-linux-ia64-105952298923313@msgid-missing> (raw)
In-Reply-To: <marc-linux-ia64-105883467032028@msgid-missing>
>
> >>>>> On Tue, 29 Jul 2003 15:35:16 -0700, Christopher Wedgwood <cw@sgi.com> said:
>
> Christopher> That sounds pretty good. Even a naive bitmap allocator
> Christopher> would probably work initially. Might we ever want to
> Christopher> allocate 2+ pages? Forcing all allocations to be a
> Christopher> single page makes many things easier.
>
> The allocation granularity should be bytes, in my opinion. The point
> of the UC allocator is so that we can share a single 64MB UC granule
> across the multiple users (of which there are a grand total of 2, at
> the moment...).
>
> --david
>
If granularity is bytes, we need to support page-aligned allocations. Fetchop
pages are mmap'ed to user space.
As far as fetchop is concerned, we always allocate 1 page at a time.
--
Thanks
Jack Steiner (651-683-5302) (vnet 233-5302) steiner@sgi.com
next prev parent reply other threads:[~2003-07-29 23:56 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-07-22 0:43 [PATCH] (2.4.x bk) efi_memmap_walk_uc Christopher Wedgwood
2003-07-22 2:16 ` Bjorn Helgaas
2003-07-22 2:58 ` Christopher Wedgwood
2003-07-22 3:08 ` Bjorn Helgaas
2003-07-22 4:43 ` Christopher Wedgwood
2003-07-25 1:15 ` David Mosberger
2003-07-29 18:34 ` Christopher Wedgwood
2003-07-29 18:45 ` Luck, Tony
2003-07-29 19:03 ` Christopher Wedgwood
2003-07-29 20:41 ` David Mosberger
2003-07-29 21:15 ` Christopher Wedgwood
2003-07-29 21:31 ` David Mosberger
2003-07-29 21:34 ` Luck, Tony
2003-07-29 22:05 ` Jack Steiner
2003-07-29 22:07 ` Christopher Wedgwood
2003-07-29 22:26 ` Luck, Tony
2003-07-29 22:30 ` David Mosberger
2003-07-29 22:35 ` Christopher Wedgwood
2003-07-29 22:37 ` Christopher Wedgwood
2003-07-29 22:47 ` Luck, Tony
2003-07-29 22:48 ` David Mosberger
2003-07-29 22:54 ` David Mosberger
2003-07-29 23:49 ` Jack Steiner
2003-07-29 23:54 ` Christopher Wedgwood
2003-07-29 23:56 ` Jack Steiner [this message]
2003-07-30 0:00 ` Christopher Wedgwood
2003-07-30 0:02 ` Christopher Wedgwood
2003-07-30 0:05 ` David Mosberger
2003-07-30 0:12 ` David Mosberger
2003-07-30 0:22 ` Jack Steiner
2003-07-30 9:21 ` Christoph Hellwig
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