Re: [PATCH v4 00/12] kexec kernel efi runtime support

Dave Young
2013-12-02T02:32:52Z

On 11/29/13 at 06:02pm, Borislav Petkov wrote:
> On Fri, Nov 29, 2013 at 04:28:22PM +0800, Dave Young wrote:
> > I think for anyone who are using early_memremap should know this is a
> > normal kernel memory instead of real __iomem
>
> You can never ever assume that people are using kernel interfaces
> correctly.

But the semantic of early_memreamp should be that it will just return
a normal memory pointer instead of iomem so the fix to convert the internal
implementation to return a __force __kernel make sense to me.

For iounmap I think since we have early_memremap, we have reason to add
early_memunmap() so sparse will be happy.

Thanks
Dave