linux-kernel - Re: [PATCH v4 6/6] KVM: X86: Conert the last users of "shorthand = 0" to use macros

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Date:   Wed, 4 Dec 2019 13:53:13 -0500
From:   Peter Xu <peterx@...hat.com>
To:     Vitaly Kuznetsov <vkuznets@...hat.com>
Cc:     kvm@...r.kernel.org, Nitesh Narayan Lal <nitesh@...hat.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Sean Christopherson <sean.j.christopherson@...el.com>,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v4 6/6] KVM: X86: Conert the last users of "shorthand =
 0" to use macros

On Wed, Dec 04, 2019 at 05:12:43PM +0100, Vitaly Kuznetsov wrote:
> Peter Xu <peterx@...hat.com> writes:
> 
> > Change the last users of "shorthand = 0" to use APIC_DEST_NOSHORT.
> >
> > Signed-off-by: Peter Xu <peterx@...hat.com>
> > ---
> >  arch/x86/kvm/ioapic.c   | 4 ++--
> >  arch/x86/kvm/irq_comm.c | 2 +-
> >  arch/x86/kvm/x86.c      | 2 +-
> >  3 files changed, 4 insertions(+), 4 deletions(-)
> >
> > diff --git a/arch/x86/kvm/ioapic.c b/arch/x86/kvm/ioapic.c
> > index f53daeaaeb37..77538fd77dc2 100644
> > --- a/arch/x86/kvm/ioapic.c
> > +++ b/arch/x86/kvm/ioapic.c
> > @@ -330,7 +330,7 @@ static void ioapic_write_indirect(struct kvm_ioapic *ioapic, u32 val)
> >  		if (e->fields.delivery_mode == APIC_DM_FIXED) {
> >  			struct kvm_lapic_irq irq;
> >  
> > -			irq.shorthand = 0;
> > +			irq.shorthand = APIC_DEST_NOSHORT;
> >  			irq.vector = e->fields.vector;
> >  			irq.delivery_mode = e->fields.delivery_mode << 8;
> >  			irq.dest_id = e->fields.dest_id;
> > @@ -379,7 +379,7 @@ static int ioapic_service(struct kvm_ioapic *ioapic, int irq, bool line_status)
> >  	irqe.trig_mode = entry->fields.trig_mode;
> >  	irqe.delivery_mode = entry->fields.delivery_mode << 8;
> >  	irqe.level = 1;
> > -	irqe.shorthand = 0;
> > +	irqe.shorthand = APIC_DEST_NOSHORT;
> >  	irqe.msi_redir_hint = false;
> >  
> >  	if (irqe.trig_mode == IOAPIC_EDGE_TRIG)
> > diff --git a/arch/x86/kvm/irq_comm.c b/arch/x86/kvm/irq_comm.c
> > index 7d083f71fc8e..9d711c2451c7 100644
> > --- a/arch/x86/kvm/irq_comm.c
> > +++ b/arch/x86/kvm/irq_comm.c
> > @@ -121,7 +121,7 @@ void kvm_set_msi_irq(struct kvm *kvm, struct kvm_kernel_irq_routing_entry *e,
> >  	irq->msi_redir_hint = ((e->msi.address_lo
> >  		& MSI_ADDR_REDIRECTION_LOWPRI) > 0);
> >  	irq->level = 1;
> > -	irq->shorthand = 0;
> > +	irq->shorthand = APIC_DEST_NOSHORT;
> >  }
> >  EXPORT_SYMBOL_GPL(kvm_set_msi_irq);
> >  
> > diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
> > index 3b00d662dc14..f6d778436e15 100644
> > --- a/arch/x86/kvm/x86.c
> > +++ b/arch/x86/kvm/x86.c
> > @@ -7355,7 +7355,7 @@ static void kvm_pv_kick_cpu_op(struct kvm *kvm, unsigned long flags, int apicid)
> >  {
> >  	struct kvm_lapic_irq lapic_irq;
> >  
> > -	lapic_irq.shorthand = 0;
> > +	lapic_irq.shorthand = APIC_DEST_NOSHORT;
> >  	lapic_irq.dest_mode = APIC_DEST_PHYSICAL;
> >  	lapic_irq.level = 0;
> >  	lapic_irq.dest_id = apicid;
> 
> Reviewed-by: Vitaly Kuznetsov <vkuznets@...hat.com>
> 
> And, while on it, and if you're not yet tired I just noticed that
> kvm_apic_match_dest()'s parameter is called 'short_hand' while
> everywhere else we use 'shorthand'. Value the consistency we should :-)

I'll aquash your suggested change into previous patch ("KVM: X86: Fix
callers of kvm_apic_match_dest() to use correct macros") and keep your
r-b for that, otherwise I'm afraid the change could be too trivial to
stand as itself..

Thanks,

-- 
Peter Xu