Re: [PATCH] Allow for arch-specific IOREMAP_MAX_ORDER

[Russell King]

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
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