Re: [PATCH 1/2] x86: ioremap: fix wrong physical address handling

Jeremy Fitzhardinge
2010-06-17T09:38:06Z

On 06/17/2010 10:35 AM, Jeremy Fitzhardinge wrote:
> I guess it would be possible to special-case ioremap to allow the
> creation of such mappings, but I don't know what kind of system-wide
> fallout would happen as a result. The consequences of something trying
> to extract a pfn from one of those ptes would be
>

...very bad, as it would result in truncated pfns and likely cause some
kind of corruption.

(oops, sent too early)

J