linux-kernel - Re: [PATCH v2 00/13] KVM: x86: break the xAPIC barrier

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Message-ID: <20160708162907.GB10741@potion>
Date:	Fri, 8 Jul 2016 18:29:07 +0200
From:	Radim Krčmář <rkrcmar@...hat.com>
To:	linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Cc:	Paolo Bonzini <pbonzini@...hat.com>,
	"Lan, Tianyu" <tianyu.lan@...el.com>,
	Igor Mammedov <imammedo@...hat.com>,
	Jan Kiszka <jan.kiszka@....de>, Peter Xu <peterx@...hat.com>
Subject: Re: [PATCH v2 00/13] KVM: x86: break the xAPIC barrier

NACK, sorry.

KVM allows x2APIC even without interrupt remapping and therefore
interprets IOAPIC destination 0xff as a broadcast, which causes a bug
when x2APIC uses 0xff.

I'll fix that in v3.  The hack will be disabled when x2apic_api
capability is enabled.