[prev in list] [next in list] [prev in thread] [next in thread] 

List:       linuxppc64-dev
Subject:    [PATCH 1/1] rtas_flash_4gig
From:       johnrose () austin ! ibm ! com (John Rose)
Date:       2004-10-28 19:27:45
Message-ID: 1098991665.692.17.camel () sinatra ! austin ! ibm ! com
[Download RAW message or body]

On Wed, 2004-10-27 at 22:59, Paul Mackerras wrote:
<snip>
> Since this is happening at reboot time, I suggest we copy the block
> list into rtas_rmo_buf.  

It's less complex to use rtas_rmo_buf exclusively for userspace.  I'm
against introducing kernel use of rtas_rmo_buf, even at reboot time.  If
we did, it would be proper to add a kernel lock to synchronize access to
it, but then userspace apps have no way to take that lock when
mmap()'ing /dev/mem.

This seems like overkill for a situation we've never actually
encountered, imho.

John



[prev in list] [next in list] [prev in thread] [next in thread]