From: Jack Steiner <steiner@sgi.com>
To: linux-ia64@vger.kernel.org
Subject: Re: [PATCH] (2.4.x bk) efi_memmap_walk_uc
Date: Wed, 30 Jul 2003 00:22:31 +0000 [thread overview]
Message-ID: <marc-linux-ia64-105952461424542@msgid-missing> (raw)
In-Reply-To: <marc-linux-ia64-105883467032028@msgid-missing>
>
> >>>>> On Tue, 29 Jul 2003 18:56:15 -0500 (CDT), Jack Steiner <steiner@sgi.com> said:
>
> Jack> If granularity is bytes, we need to support page-aligned
> Jack> allocations. Fetchop pages are mmap'ed to user space.
>
> I see. But then EFI-page-aligned memory won't do you no good either
> (i.e., you'd need a PAGE_SIZE-based allocator). Alternatively, just
> allocated PAGE_SIZE+1 extra bytes and do the alignment yourself?
>
> --david
That would work but would waste space (unless we allow "free" to
accept a partial free of a previously allocated chunk. "free" would
have to combine fragments). Fetchop space on our platform is
a limited resource.
--
Thanks
Jack Steiner (651-683-5302) (vnet 233-5302) steiner@sgi.com
next prev parent reply other threads:[~2003-07-30 0:22 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
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 [this message]
2003-07-30 9:21 ` Christoph Hellwig
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