linux-kernel - Re: [PATCH 02/44] KVM: Initialize IRQ FD after arch hardware setup

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Date:   Fri, 4 Nov 2022 20:15:36 +0000
From:   Sean Christopherson <seanjc@...gle.com>
To:     Chao Gao <chao.gao@...el.com>
Cc:     Paolo Bonzini <pbonzini@...hat.com>, Marc Zyngier <maz@...nel.org>,
        Huacai Chen <chenhuacai@...nel.org>,
        Aleksandar Markovic <aleksandar.qemu.devel@...il.com>,
        Anup Patel <anup@...infault.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Christian Borntraeger <borntraeger@...ux.ibm.com>,
        Janosch Frank <frankja@...ux.ibm.com>,
        Claudio Imbrenda <imbrenda@...ux.ibm.com>,
        Matthew Rosato <mjrosato@...ux.ibm.com>,
        Eric Farman <farman@...ux.ibm.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        James Morse <james.morse@....com>,
        Alexandru Elisei <alexandru.elisei@....com>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Oliver Upton <oliver.upton@...ux.dev>,
        Atish Patra <atishp@...shpatra.org>,
        David Hildenbrand <david@...hat.com>, kvm@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, kvmarm@...ts.linux.dev,
        kvmarm@...ts.cs.columbia.edu, linux-mips@...r.kernel.org,
        linuxppc-dev@...ts.ozlabs.org, kvm-riscv@...ts.infradead.org,
        linux-riscv@...ts.infradead.org, linux-s390@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Isaku Yamahata <isaku.yamahata@...el.com>,
        Fabiano Rosas <farosas@...ux.ibm.com>,
        Michael Ellerman <mpe@...erman.id.au>,
        Thomas Gleixner <tglx@...utronix.de>,
        Yuan Yao <yuan.yao@...el.com>
Subject: Re: [PATCH 02/44] KVM: Initialize IRQ FD after arch hardware setup

On Fri, Nov 04, 2022, Chao Gao wrote:
> On Wed, Nov 02, 2022 at 11:18:29PM +0000, Sean Christopherson wrote:
> > 
> >+	r = kvm_irqfd_init();
> >+	if (r)
> >+		goto err_irqfd;
> >+
> > 	r = kvm_async_pf_init();
> > 	if (r)
> >-		goto out_free_4;
> >+		goto err_async_pf;
> > 
> > 	kvm_chardev_ops.owner = module;
> > 
> >@@ -5927,6 +5926,9 @@ int kvm_init(void *opaque, unsigned vcpu_size, unsigned vcpu_align,
> > 	kvm_vfio_ops_exit();
> > err_vfio:
> > 	kvm_async_pf_deinit();
> >+err_async_pf:
> >+	kvm_irqfd_exit();
> 
> >+err_irqfd:
> > out_free_4:
> 
> Do you mind removing one of the two labels?

Ah, I meant to tack on a patch at the very end to clean up these labels once the
dust had settled, e.g. to also resolve the "err" vs. "out" mess I created (on
purpose, because trying to describe the "out" path was frustrating and generated
too much churn).