Re: [Xen-devel] [PATCH 0/2] Support consistent reads of mapped vcpu_runstate_info

[Julien Grall <julien.grall@xxxxxxx>]

Hi Juergen,

On 20/05/16 14:22, Juergen Gross wrote:
> A guest mapping vcpu_runstate_info into its memory can't read this
> information from another cpu but the one the data is referring to.
> Reason is there is no reliable way for the guest to detect a concurrent
> data update by the hypervisor.
>
> This patch series adds an update flag to the mapped data which can be
> used by the guest to detect an update is occurring. As this flag is
> modifying the current interface it has to be activated by using a
> vm_assist hypercall, which in turn has to be made available for ARM.
>
> Runtime tested on x86 with a modified Linux kernel using the new
> feature.
> Compile tested only for ARM.
I would like to give a go on ARM. Who it be possible to provide the 
patch for Linux and how to test it?
Regards,

--
Julien Grall

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