Re: [PATCH 2.6.19-rc1 update4] drivers: add LCD support

From: Hugh Dickins
Date: Mon Oct 30 2006 - 09:25:30 EST


On Mon, 30 Oct 2006, Franck Bui-Huu wrote:
>
> Any idea why LDD3 states:
>
> An interesting limitation of remap_pfn_range is that it gives
> access only to reserved pages and physical addresses above the
> top of physical memory.

It was true until 2.6.15, when VM_PFNMAP removed that restriction to
PageReserved (or struct-page-less) pages.

Hugh
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