From: Russell King <rmk+lkml@arm.linux.org.uk>
To: Deepak Saxena <dsaxena@plexity.net>
Cc: Andrew Morton <akpm@osdl.org>, Linus Torvalds <torvalds@osdl.org>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] Allow for arch-specific IOREMAP_MAX_ORDER
Date: Sun, 28 Aug 2005 18:39:02 +0100 [thread overview]
Message-ID: <20050828183902.D14294@flint.arm.linux.org.uk> (raw)
In-Reply-To: <20050824221202.GA28977@plexity.net>; from dsaxena@plexity.net on Wed, Aug 24, 2005 at 03:12:02PM -0700
On Wed, Aug 24, 2005 at 03:12:02PM -0700, Deepak Saxena wrote:
> Version 6 of the ARM architecture introduces the concept of 16MB pages
> (supersections) and 36-bit (40-bit actually, but nobody uses this)
> physical addresses. 36-bit addressed memory and I/O and ARMv6 can
> only be mapped using supersections and the requirement on these is
> that both virtual and physical addresses be 16MB aligned.
Have we sorted out how we handle the issue of IO vs memory outside the
normal 4GB? We can only map one or other depending on how the domains
are setup and get the correct permission behaviour.
--
Russell King
Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/
maintainer of: 2.6 Serial core
next prev parent reply other threads:[~2005-08-28 17:39 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-24 22:12 [PATCH] Allow for arch-specific IOREMAP_MAX_ORDER Deepak Saxena
2005-08-28 17:39 ` Russell King [this message]
2005-09-06 6:45 ` Deepak Saxena
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20050828183902.D14294@flint.arm.linux.org.uk \
--to=rmk+lkml@arm.linux.org.uk \
--cc=akpm@osdl.org \
--cc=dsaxena@plexity.net \
--cc=linux-kernel@vger.kernel.org \
--cc=torvalds@osdl.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox