From mboxrd@z Thu Jan  1 00:00:00 1970
From: marc.zyngier@arm.com (Marc Zyngier)
Date: Fri, 13 Jan 2017 14:57:34 +0000
Subject: [PATCH 2/3] KVM: arm64: Access CNTHCTL_EL2 bit fields correctly
 on VHE systems
In-Reply-To: <20170113144622.GC2472@leverpostej>
References: <1484307093-29153-1-git-send-email-marc.zyngier@arm.com>
 <1484307093-29153-3-git-send-email-marc.zyngier@arm.com>
 <20170113123612.GA31994@cbox> <20170113144622.GC2472@leverpostej>
Message-ID: <fdd9ded5-4a66-4115-4f9a-47ef508e77ba@arm.com>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

On 13/01/17 14:46, Mark Rutland wrote:
> On Fri, Jan 13, 2017 at 01:36:12PM +0100, Christoffer Dall wrote:
>> On Fri, Jan 13, 2017 at 11:31:32AM +0000, Marc Zyngier wrote:
> 
>> Further, are we guaranteed that the static branch gets compiled into
>> something that doesn't actually look at cpu_hwcap_keys, which is not
>> mapped in hyp mode?
> 
> The fact that this might happen silently seems to be a larger problem.
> 
> Can we do something like the EFI stub, and ensure that (unintentional)
> references to symbols outside of the hyp-stub will fail to link? That's
> ensrue by some symbol mangling in drivers/firmware/efi/libstub/Makefile.
> 
> I think this may have come up before; I can't recall if there was some
> reason that was problematic.

>>From what I remember, this was a gigantic mess... We could revisit it
though (after all, it's been a whole year since we did turn the whole
thing upside down -- time for a rewrite!).

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