[PATCH v3 11/22] arm64: KVM: Add patchable function selector

Christoffer Dall christoffer.dall at linaro.org
Fri Dec 11 13:21:16 PST 2015


On Mon, Dec 07, 2015 at 10:53:27AM +0000, Marc Zyngier wrote:
> KVM so far relies on code patching, and is likely to use it more
> in the future. The main issue is that our alternative system works
> at the instruction level, while we'd like to have alternatives at
> the function level.
> 
> In order to cope with this, add the "hyp_alternate_select" macro that
> outputs a brief sequence of code that in turn can be patched, allowing
> an alternative function to be selected.
> 
> Signed-off-by: Marc Zyngier <marc.zyngier at arm.com>

Acked-by: Christoffer Dall <christoffer.dall at linaro.org>



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