From mboxrd@z Thu Jan  1 00:00:00 1970
From: Paolo Bonzini <pbonzini@redhat.com>
Subject: Re: [PATCH 0/8] KVM: minor APIC fixes and cleanups
Date: Fri, 30 Jan 2015 16:24:13 +0100
Message-ID: <54CBA21D.6050506@redhat.com>
References: <1422568135-28402-1-git-send-email-rkrcmar@redhat.com> <54CB4D44.1080109@redhat.com> <20150130152031.GC28519@potion.redhat.com>
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Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org,
	Nadav Amit <namit@cs.technion.ac.il>,
	Gleb Natapov <gleb@kernel.org>
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On 30/01/2015 16:20, Radim Kr=C4=8Dm=C3=A1=C5=99 wrote:
>> > +	/* XXX: A superset of x2APIC broadcasts is fine in practice as l=
ong as
>> > +	 * we don't support APIC ID > 0xfeffffff.
>> > +	 */
>> >=20
>> > It's ugly. :)
> Yeah, there is: don't deliver x2APIC broadcasts to xAPIC.
> (I'm not even sure if it is correct ...)
>=20
> Without that delivery, we could do something like
>   if (irq->dest_id =3D=3D (x2apic_ipi ? X2APIC_BROADCAST : APIC_BROAD=
CAST))

Nadav, do you know what real hardware does?

Paolo