From: "Jared Hulbert" <jaredeh@gmail.com>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Nick Piggin <npiggin@suse.de>,
carsteno@de.ibm.com, Andrew Morton <akpm@linux-foundation.org>,
mschwid2@linux.vnet.ibm.com, heicars2@linux.vnet.ibm.com,
linux-mm@kvack.org, linux-fsdevel@vger.kernel.org
Subject: Re: [patch 4/6] xip: support non-struct page backed memory
Date: Mon, 3 Mar 2008 15:25:15 -0800 [thread overview]
Message-ID: <6934efce0803031525s3d95f429g2b5a0ed742f6230d@mail.gmail.com> (raw)
In-Reply-To: <alpine.LFD.1.00.0803031420430.2979@woody.linux-foundation.org>
> Implementing a kmap_pfn() sounds like a perfectly sane idea. But why does
> it need to even be mapped into kernel space? Is it for the ELF header
> reading or something (not having looked at the patch, just reacting to the
> wrongness of using virt_to_phys())?
Right.
My AXFS prefers the filesystem image to be in memory like Flash. So
it also uses the kaddr to read it's data structures and to fetch data
for the readpage(). In fact, the MTD doesn't provide access to the
physical address of a given partition without a patch.
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next prev parent reply other threads:[~2008-03-03 23:25 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20080118045649.334391000@suse.de>
2008-01-18 4:56 ` [patch 1/6] mm: introduce VM_MIXEDMAP npiggin, Jared Hulbert
2008-01-18 4:56 ` [patch 2/6] mm: introduce pte_special pte bit npiggin
2008-01-18 16:41 ` Linus Torvalds
2008-01-18 18:04 ` Sam Ravnborg
2008-01-18 18:28 ` Linus Torvalds
2008-01-18 18:53 ` Sam Ravnborg
2008-01-18 22:46 ` Nick Piggin
2008-01-18 23:03 ` Linus Torvalds
2008-01-19 5:07 ` Nick Piggin
2008-01-21 9:43 ` Nick Piggin
2008-01-18 4:56 ` [patch 3/6] mm: add vm_insert_mixed npiggin
2008-01-18 4:56 ` [patch 4/6] xip: support non-struct page backed memory npiggin
2008-03-01 8:14 ` Jared Hulbert
2008-03-03 5:29 ` Nick Piggin
2008-03-03 8:30 ` Carsten Otte
2008-03-03 15:59 ` Jared Hulbert
2008-03-03 8:18 ` Carsten Otte
2008-03-03 15:44 ` Jared Hulbert
2008-03-03 18:40 ` Linus Torvalds
2008-03-03 19:38 ` Jared Hulbert
2008-03-03 20:04 ` Linus Torvalds
2008-03-03 20:32 ` Nick Piggin
2008-03-03 22:21 ` Linus Torvalds
2008-03-03 23:25 ` Jared Hulbert [this message]
2008-03-04 9:06 ` Carsten Otte
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