linux-kernel - Re: [PATCH v3 1/8] KVM: selftests: Create a demand paging test

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Message-ID: <20200107143334.GF219677@xz-x1>
Date:   Tue, 7 Jan 2020 09:33:34 -0500
From:   Peter Xu <peterx@...hat.com>
To:     Ben Gardon <bgardon@...gle.com>
Cc:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
        linux-kselftest@...r.kernel.org,
        Paolo Bonzini <pbonzini@...hat.com>,
        Cannon Matthews <cannonmatthews@...gle.com>,
        Andrew Jones <drjones@...hat.com>
Subject: Re: [PATCH v3 1/8] KVM: selftests: Create a demand paging test

On Mon, Dec 16, 2019 at 01:38:54PM -0800, Ben Gardon wrote:
> While userfaultfd, KVM's demand paging implementation, is not specific
> to KVM, having a benchmark for its performance will be useful for
> guiding performance improvements to KVM. As a first step towards creating
> a userfaultfd demand paging test, create a simple memory access test,
> based on dirty_log_test.
> 
> Signed-off-by: Ben Gardon <bgardon@...gle.com>

It's fine to start with x86-only for this test, but imho it would be
better to mention that in cover letter, or reply to reviewer comments
on that you removed aarch64 from previous post.

Reviewed-by: Peter Xu <peterx@...hat.com>

-- 
Peter Xu