linux-kernel - Re: [RFC PATCH v5 08/10] KVM: selftests: List all hugetlb src types specified with page sizes

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Date:   Tue, 23 Mar 2021 15:12:08 +0100
From:   Andrew Jones <drjones@...hat.com>
To:     Yanan Wang <wangyanan55@...wei.com>
Cc:     Paolo Bonzini <pbonzini@...hat.com>, kvm@...r.kernel.org,
        linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org,
        Ben Gardon <bgardon@...gle.com>,
        Sean Christopherson <seanjc@...gle.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Peter Xu <peterx@...hat.com>, Ingo Molnar <mingo@...nel.org>,
        Adrian Hunter <adrian.hunter@...el.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...hat.com>,
        Arnd Bergmann <arnd@...db.de>,
        Michael Kerrisk <mtk.manpages@...il.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        wanghaibin.wang@...wei.com, yuzenghui@...wei.com
Subject: Re: [RFC PATCH v5 08/10] KVM: selftests: List all hugetlb src types
 specified with page sizes

On Tue, Mar 23, 2021 at 09:52:29PM +0800, Yanan Wang wrote:
> With VM_MEM_SRC_ANONYMOUS_HUGETLB, we currently can only use system
> default hugetlb pages to back the testing guest memory. In order to
> add flexibility, now list all the known hugetlb backing src types with
> different page sizes, so that we can specify use of hugetlb pages of the
> exact granularity that we want. And as all the known hugetlb page sizes
> are listed, it's appropriate for all architectures.
> 
> Besides, the helper get_backing_src_pagesz() is added to get the
> granularity of different backing src types(anonumous, thp, hugetlb).
> 
> Suggested-by: Ben Gardon <bgardon@...gle.com>
> Signed-off-by: Yanan Wang <wangyanan55@...wei.com>
> ---
>  .../testing/selftests/kvm/include/test_util.h |  18 ++-
>  tools/testing/selftests/kvm/lib/kvm_util.c    |   2 +-
>  tools/testing/selftests/kvm/lib/test_util.c   | 109 ++++++++++++++++--
>  3 files changed, 116 insertions(+), 13 deletions(-)
>

Reviewed-by: Andrew Jones <drjones@...hat.com>