RE: IO regression after ab8fabd46f on x86 kernels with high memory

From: Yuhong Bao
Date: Sun Jun 02 2013 - 21:24:15 EST

> We kernel guys have been asking the distros to ship 64-bit kernels even
> in their 32-bit distros for many years, but concerns of compat issues
> and the desire to deprecate 32-bit userspace seems to have kept that
> from happening.

And now there is another reason: to call 64-bit EFI runtime services.
In retrospect, I would have stuck with 32-bit EFI with 64-bit kernels calling runtime services in compatibility mode, but of course it is too late for that now.

Yuhong Bao --
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