Re: [Xen-devel] [PATCH] KVM: arm64: add workaround for Cortex-A57 erratum #852523

[Julien Grall <julien.grall@xxxxxxxxxx>]

On 14/09/2015 16:58, Will Deacon wrote:
> > The Xen ctxt switch code[0] has DACR_EL2 in the midst of it all, and
> > certainly followed by some sysregs, which I've got my fingers crossed
> > happens to be sufficient (other than maybe adding a comment).
> It looks like you restore CONTEXTIDR_EL1 fairly late, so you should be
> ok.
It may be worth to have a comment in the code explaining the errata to 
avoid introduce by inadvertence if we plan to re-order the context switch.
I can send a patch for that.

Regards,

--
Julien Grall

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