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Re: [Qemu-arm] [RFC] arm: Allow system registers for KVM guests to be ch

From: gengdongjiu
Subject: Re: [Qemu-arm] [RFC] arm: Allow system registers for KVM guests to be changed by QEMU code
Date: Fri, 7 Dec 2018 10:29:24 +0800
User-agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:52.0) Gecko/20100101 Thunderbird/52.6.0

On 2018/12/6 23:14, Peter Maydell wrote:
> ---
> I think this patch:
>  * should be necessary for the current KVM debug code to be able
>    to actually set the ESR_EL1 for the guest when it wants to
>    deliver a breakpoint exception to it
>  * will also be necessary for Dongjiu's patchset to inject
>    external aborts on memory errors
> I have tagged it "RFC" because I don't have a setup to test
> that; I've just given it a quick smoke test that it runs a
> VM OK. Please test this and check whether it really does
> fix the bugs I think it does :-)

Great! thanks Peter follow up this issue and patch to fix it.
I will test it and give response.

> Opinions welcome on whether the "try the write-and-read-back"
> approach in write_cpustate_to_list() is too hacky and it
> would be better to actually record whether write_list_to_cpustate()
> succeeded for each register. (That would require another array.)

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