From: Mary Strodl <mstrodl@freedom.csh.rit.edu>
To: Andrew Morton <akpm@linux-foundation.org>
Cc: Mary Strodl <mstrodl@csh.rit.edu>,
linux-kernel@vger.kernel.org, urezki@gmail.com,
hch@infradead.org, linux-mm@kvack.org, lee@kernel.org,
andi.shyti@kernel.org, linux-i2c@vger.kernel.org,
s.hauer@pengutronix.de, christian.gmeiner@gmail.com
Subject: Re: [PATCH 1/3] mm: vmalloc: export __vmalloc_node_range
Date: Thu, 18 Jul 2024 08:29:53 -0400 [thread overview]
Message-ID: <ZpkKwfESyr91ekco@freedom.csh.rit.edu> (raw)
In-Reply-To: <20240717195323.d2dbfed9835ba7e2d769921e@linux-foundation.org>
On Wed, Jul 17, 2024 at 07:53:23PM -0700, Andrew Morton wrote:
> Removed by which commit?
Thanks. This was removed in:
88dca4ca5a93 mm: remove the pgprot argument to __vmalloc
It was removed because every driver was passing PAGE_KERNEL
> Why does this driver need a thing which no other driver does?
You can find more information in the manufacturer's docs:
https://www.congatec.com/fileadmin/user_upload/Documents/Manual/CGOSAPI.pdf
In particular, section 1 (page 11) describes how they intend for
it to work.
Basically, they provide an x86 blob in the BIOS that we copy
into kernelspace and mark executable. Then, we can call into that
blob to access congatec's special hardware.
Thanks again for reviewing my patches!
If there is a better way to do what I'm trying to do, please let
me know. It's possible I'm missing something obvious.
next prev parent reply other threads:[~2024-07-18 12:29 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-18 1:15 [PATCH 0/3] Add support for Congatec CGEB BIOS interface Mary Strodl
2024-07-18 1:15 ` [PATCH 1/3] mm: vmalloc: export __vmalloc_node_range Mary Strodl
2024-07-18 2:53 ` Andrew Morton
2024-07-18 12:29 ` Mary Strodl [this message]
2024-07-18 3:04 ` Christoph Hellwig
2024-07-18 12:40 ` Mary Strodl
2024-07-18 12:45 ` Matthew Wilcox
2024-07-18 12:49 ` Christoph Hellwig
2024-07-18 12:53 ` Matthew Wilcox
2024-07-18 13:20 ` Mary Strodl
2024-07-18 21:31 ` Andrew Morton
2024-07-18 21:35 ` Matthew Wilcox
2024-07-18 21:39 ` Andrew Morton
2024-07-19 6:41 ` Christian Gmeiner
2024-07-19 11:58 ` Mary Strodl
2024-07-19 12:42 ` Matthew Wilcox
2024-07-24 0:00 ` Andrew Morton
2024-07-24 0:16 ` Matthew Wilcox
2024-07-24 1:36 ` Christoph Hellwig
2024-07-19 19:59 ` Rudolf Marek
2024-07-22 14:54 ` Mary Strodl
2024-07-18 1:15 ` [PATCH 2/3] x86: Add basic support for the Congatec CGEB BIOS interface Mary Strodl
2024-07-18 3:56 ` kernel test robot
2024-07-18 14:01 ` kernel test robot
2024-07-18 1:15 ` [PATCH 3/3] i2c: Add Congatec CGEB I2C driver Mary Strodl
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