Re: [PATCH] updated: arm64: KVM: vgic: deal with GIC sub-page alignment

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On Sat, 9 Jul 2016 09:27:21 +0900
Itaru Kitayama <itaru.kitayama@xxxxxxxx> wrote:

Itaru,

> I'm at the latest commit, fa9301d in the gicv-align branch at the 
> moment, with that an unmodified QEMU guest boots fine on a 64Kb page 
> granular host, thanks to the trapping you introduced.

Please realize that this is a work in progress, and that I'm not even
sure I want to upstream this.

> (I wanted to get some performance statistics of the new feature with 
> perf, but on arm64 most of them are unsupported)

Care to mention which ones are missing?

> However, if I rebuild the kernel using defconfig with only the kernel 
> page size changed to 16Kb it does not boot at least on Overdrive 3000.

Only a few CPUs support 16kB pages, and Cortex-A57 is definitely not
one of them.

Thanks,

	M.
-- 
Jazz is not dead. It just smells funny.
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