Re: [PATCH 0/5] arm/arm64: KVM: Tighten memory protection flags

Christoffer Dall
2016-06-29T12:21:18Z

Hi Marc,

On Mon, Jun 13, 2016 at 03:00:44PM +0100, Marc Zyngier wrote:
> So far, the HYP mappings have been fairly relaxed: everything is
> RWX. Oddly enough, not everybody is fond of this kind of permissions
> at the highest exception level.
>
> This small series tightens it a bit by making:
> - the text mapping read-only
> - the rodata mapping read-only + no-exec
> - everything else read-write + no-exec
>
> Of course, that's only valid when VHE is not in action. Tested on
> Seattle and Cubietruck, based on 4.7-rc2.
>

I have applied this to queue with a RB on all the patches.

It seems like this series applies on top of the merged page tables
stuff, but since I think you're going to repost that, I have just
applied this and fixed up the conflicts.

Could you have a look at kvmarm/queue and let me know if you think it
looks good? (and possibly rebase the merge page tables stuff on top of
there when you rework that series?)

Thanks!
-Christoffer