linux-kernel - Re: [PATCH] selftests/kvm: touch all pages of args on each memstress iteration

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Date:   Thu,  1 Jun 2023 18:23:36 -0700
From:   Sean Christopherson <seanjc@...gle.com>
To:     Sean Christopherson <seanjc@...gle.com>,
        linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
        Paolo Bonzini <pbonzini@...hat.com>
Cc:     vipinsh@...gle.com, bgardon@...gle.com
Subject: Re: [PATCH] selftests/kvm: touch all pages of args on each memstress iteration

On Wed, 12 Apr 2023 16:09:13 -0400, Paolo Bonzini wrote:
> Access the same memory addresses on each iteration of the memstress
> guest code.  This ensures that the state of KVM's page tables
> is the same after every iteration, including the pages that host the
> guest page tables for args and vcpu_args.
> 
> This difference is visible on the dirty_log_page_splitting_test
> on AMD machines.
> 
> [...]

Applied to kvm-x86 selftests, thanks!

[1/1] selftests/kvm: touch all pages of args on each memstress iteration
      https://github.com/kvm-x86/linux/commit/07b4b2f4047f

--
https://github.com/kvm-x86/linux/tree/next
https://github.com/kvm-x86/linux/tree/fixes