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Date: Mon, 9 May 2016 13:36:29 +0800
From: Peter Xu <peterx@redhat.com>
Message-ID: <20160509053629.GA25124@pxdev.xzpeter.org>
References: <1462568028-31037-1-git-send-email-rkrcmar@redhat.com>
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Subject: Re: [Qemu-devel] [RFC 0/4] APIC, IOMMU, KVM: add x2APIC interface
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To: Radim =?utf-8?B?S3LEjW3DocWZ?= <rkrcmar@redhat.com>
Cc: qemu-devel@nongnu.org, Paolo Bonzini <pbonzini@redhat.com>, "Lan, Tianyu" <tianyu.lan@intel.com>, Igor Mammedov <imammedo@redhat.com>, Jan Kiszka <jan.kiszka@web.de>, Eduardo Habkost <ehabkost@redhat.com>, Richard Henderson <rth@twiddle.net>

On Fri, May 06, 2016 at 10:53:44PM +0200, Radim Kr=C4=8Dm=C3=A1=C5=99 wro=
te:
> This series bases on Peter's IR v6 and depends on patches that were jus=
t
> posted to kvm-list, "[RFC 0/9] KVM: x86: break the xAPIC barrier".
>=20
> The kernel interface could use your comments, but internal QEMU one is
> in dire need of them.  Please see [1/4].
>=20
> I have tested the series and seems to work as well as it can.
> Peter's IR v6 didn't boot on my setup, so I reverted to the latest
> version I know was working, v4, and rebased paches for testing.

Radim,

Would you please provide your test setup? So that I can try to
reproduce it on my machine and debug it.=20

> The setup from Igor's latest x2APIC QEMU patches creates two VCPUs,
> first has id 0 and second has 280.  Edge IO-APIC and MSI interrupts
> were being delivered to both of them, but level didn't work -- only
> one interrupt was ever delivered, I blame EOI.

Not sure whether this is related to the v5 fix on kernel EOI hack
(the two patches that you have reviewed)? That two patches should
solve the level-triggered interrupt issue that I have encountered,
like e1000 cards.

-- peterx