linux-kernel - Re: [PATCH v2 038/144] KVM: selftests: Push vm_adjust_num_guest

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Message-ID: <YqD9SshYPF9ZV+Hc@google.com>
Date:   Wed, 8 Jun 2022 19:49:30 +0000
From:   Sean Christopherson <seanjc@...gle.com>
To:     Andrew Jones <drjones@...hat.com>
Cc:     Paolo Bonzini <pbonzini@...hat.com>, kvm@...r.kernel.org,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        David Matlack <dmatlack@...gle.com>,
        Ben Gardon <bgardon@...gle.com>,
        Oliver Upton <oupton@...gle.com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 038/144] KVM: selftests: Push
 vm_adjust_num_guest_pages() into "w/o vCPUs" helper

On Wed, Jun 08, 2022, Andrew Jones wrote:
> On Fri, Jun 03, 2022 at 12:41:45AM +0000, Sean Christopherson wrote:
> > Move the call to vm_adjust_num_guest_pages() from vm_create_with_vcpus()
> > down into vm_create_without_vcpus().  This will allow a future patch to
> > make the "w/o vCPUs" variant the common inner helper, e.g. so that the
> > "with_vcpus" helper calls the "without_vcpus" helper, instead of having
> > them be separate paths.
> > 
> > Signed-off-by: Sean Christopherson <seanjc@...gle.com>
> > ---
> >  tools/testing/selftests/kvm/lib/kvm_util.c | 4 ++--
> >  1 file changed, 2 insertions(+), 2 deletions(-)
> > 
> > diff --git a/tools/testing/selftests/kvm/lib/kvm_util.c b/tools/testing/selftests/kvm/lib/kvm_util.c
> > index 1c5caf2ddca4..6b0b65c26d4d 100644
> > --- a/tools/testing/selftests/kvm/lib/kvm_util.c
> > +++ b/tools/testing/selftests/kvm/lib/kvm_util.c
> > @@ -282,6 +282,8 @@ struct kvm_vm *vm_create_without_vcpus(enum vm_guest_mode mode, uint64_t pages)
> >  {
> >  	struct kvm_vm *vm;
> >  
> > +	pages = vm_adjust_num_guest_pages(VM_MODE_DEFAULT, pages);
> 
> Hi Sean,
> 
> We should pass 'mode' here.

Ouch.  Very nice catch!  Lucky for me, the resulting conflicts later in the series
are obvious and straightfoward.

Thanks much!