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SubjectRe: [RFC PATCH 1/2] KVM: selftests: Add a macro to get string of vm_mem_backing_src_type

On 2021/2/10 1:35, Sean Christopherson wrote:
> On Tue, Feb 09, 2021, Ben Gardon wrote:
>> On Tue, Feb 9, 2021 at 3:21 AM wangyanan (Y) <> wrote:
>>> On 2021/2/9 2:13, Ben Gardon wrote:
>>>> On Mon, Feb 8, 2021 at 1:08 AM Yanan Wang <> wrote:
>>>>> Add a macro to get string of the backing source memory type, so that
>>>>> application can add choices for source types in the help() function,
>>>>> and users can specify which type to use for testing.
>>>> Coincidentally, I sent out a change last week to do the same thing:
>>>> "KVM: selftests: Add backing src parameter to dirty_log_perf_test"
>>>> (
>>>> Whichever way this ends up being implemented, I'm happy to see others
>>>> interested in testing different backing source types too.
>>> Thanks Ben! I have a little question here.
>>> Can we just present three IDs (0/1/2) but not strings for users to
>>> choose which backing_src_type to use like the way of guest modes,
>> That would be fine with me. The string names are easier for me to read
>> than an ID number (especially if you were to add additional options
>> e.g. 1G hugetlb or file backed / shared memory) but it's mostly an
>> aesthetic preference, so I don't have strong feelings either way.
> I vote to expose/consume strings, being able to do ".dirty_log_perf_test --help"
> and understand the backing options without having to dig into source was super
> nice.
> .
Fine then:), I will make some change based on
(, thanks!

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