linux-kernel - Re: [PATCH] KVM: selftests: memslot_perf

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Message-ID: <ZymzUI3HnkYMxyjk@google.com>
Date: Mon, 4 Nov 2024 21:55:28 -0800
From: Sean Christopherson <seanjc@...gle.com>
To: kvm@...r.kernel.org, Maxim Levitsky <mlevitsk@...hat.com>
Cc: Paolo Bonzini <pbonzini@...hat.com>, linux-kselftest@...r.kernel.org, 
	Shuah Khan <shuah@...nel.org>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] KVM: selftests: memslot_perf_test: increase guest sync timeout

On Wed, Oct 09, 2024, Sean Christopherson wrote:
> On Fri, 04 Oct 2024 18:01:53 -0400, Maxim Levitsky wrote:
> > When memslot_perf_test is run nested, first iteration of test_memslot_rw_loop
> > testcase, sometimes takes more than 2 seconds due to build of shadow page tables.
> > 
> > Following iterations are fast.
> > 
> > To be on the safe side, bump the timeout to 10 seconds.
> > 
> > [...]
> 
> Nice timing (lol), the alarm can also fire spuriously when running selftests
> on a loaded arm64 host.
> 
> Applied to kvm-x86 fixes, thanks!
> 
> [1/1] KVM: selftests: memslot_perf_test: increase guest sync timeout
>       https://github.com/kvm-x86/linux/commit/7d4e28327d7e

FYI, I rebased "fixes" onto 6.12-rc5 to avoid conflicts in other patches, new hash:

[1/1] KVM: selftests: memslot_perf_test: increase guest sync timeout
      https://github.com/kvm-x86/linux/commit/2d0f2a648147

FWIW, I am planning on getting this to Paolo in time for -rc7.