From: Paolo Bonzini <pbonzini@redhat.com>
To: Alexander Graf <agraf@suse.de>
Cc: Alexey Kardashevskiy <aik@ozlabs.ru>,
Paul Mackerras <paulus@samba.org>,
qemu-ppc@nongnu.org, qemu-devel@nongnu.org,
"Michael S. Tsirkin" <mst@redhat.com>
Subject: Re: [Qemu-devel] [PATCH v6] kvm irqfd: support direct msimessage to irq translation
Date: Thu, 05 Sep 2013 18:01:41 +0200 [thread overview]
Message-ID: <5228AAE5.3030002@redhat.com> (raw)
In-Reply-To: <20130903081726.GB18901@redhat.com>
Il 03/09/2013 10:17, Michael S. Tsirkin ha scritto:
>> On PPC64 systems MSI Messages are translated to system IRQ in a PCI
>> > host bridge. This is already supported for emulated MSI/MSIX but
>> > not for irqfd where the current QEMU allocates IRQ numbers from
>> > irqchip and maps MSIMessages to IRQ in the host kernel.
>> >
>> > This adds a new direct mapping flag which tells
>> > the kvm_irqchip_add_msi_route() function that a new VIRQ
>> > should not be allocated, instead the value from MSIMessage::data
>> > should be used. It is up to the platform code to make sure that
>> > this contains a valid IRQ number as sPAPR does in spapr_pci.c.
>> >
>> > Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru>
> Fine with me
>
> Acked-by: Michael S. Tsirkin <mst@redhat.com>
>
Alex, are you picking this one?
Paolo
next prev parent reply other threads:[~2013-09-05 16:02 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-09-03 8:08 [Qemu-devel] [PATCH v6] kvm irqfd: support direct msimessage to irq translation Alexey Kardashevskiy
2013-09-03 8:17 ` Michael S. Tsirkin
2013-09-03 15:36 ` Alexander Graf
2013-09-05 16:01 ` Paolo Bonzini [this message]
2013-09-05 16:03 ` Alexander Graf
2013-09-12 16:32 ` Paolo Bonzini
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