From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Alex Williamson <alex.williamson@redhat.com>
Cc: Anthony Liguori <aliguori@us.ibm.com>,
"Michael S . Tsirkin" <mst@redhat.com>,
Alexey Kardashevskiy <aik@ozlabs.ru>,
qemu-devel@nongnu.org, Alexander Graf <agraf@suse.de>,
qemu-trivial@nongnu.org, qemu-ppc@nongnu.org,
Paolo Bonzini <pbonzini@redhat.com>,
Paul Mackerras <paulus@samba.org>,
David Gibson <david@gibson.dropbear.id.au>
Subject: Re: [Qemu-devel] [PATCH] RFC kvm irqfd: add directly mapped MSI IRQ support
Date: Fri, 21 Jun 2013 15:12:13 +1000 [thread overview]
Message-ID: <1371791533.3944.50.camel@pasglop> (raw)
In-Reply-To: <1371789981.30572.114.camel@ul30vt.home>
On Thu, 2013-06-20 at 22:46 -0600, Alex Williamson wrote:
> Maybe you could add a device parameter to kvm_irqchip_add_msi_route so
> that it can be implemented on POWER without this pci_bus_map_msi
> interface that seems very unique to POWER. Thanks,
You mean unique to all non-x86 ? :-)
I believe almost everybody eventually turn MSIs into "normal"
interrupts...
Most often than not, the logic to do so is in the PCI Host Bridge.
The whole concept of passing the message address/data accross the
user/kernel interface is an x86 crackpotery but as is the entire
remapping/routing layer so ... :-)
Ben.
next prev parent reply other threads:[~2013-06-21 5:12 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-20 14:08 [Qemu-devel] [PATCH] RFC kvm irqfd: add directly mapped MSI IRQ support Alexey Kardashevskiy
2013-06-20 15:38 ` Michael S. Tsirkin
2013-06-20 16:37 ` Anthony Liguori
2013-06-20 23:51 ` Alexey Kardashevskiy
2013-06-23 14:07 ` Michael S. Tsirkin
2013-06-23 15:02 ` Anthony Liguori
2013-06-23 21:39 ` [Qemu-devel] [Qemu-ppc] " Benjamin Herrenschmidt
2013-06-23 21:58 ` Anthony Liguori
2013-06-24 4:46 ` Alex Williamson
2013-06-24 12:24 ` Anthony Liguori
2013-06-24 12:39 ` Gleb Natapov
2013-06-23 21:36 ` [Qemu-devel] " Benjamin Herrenschmidt
2013-06-24 12:10 ` Michael S. Tsirkin
2013-06-20 16:51 ` Alex Williamson
2013-06-21 1:56 ` Alexey Kardashevskiy
2013-06-21 2:34 ` Alex Williamson
2013-06-21 2:49 ` Alexey Kardashevskiy
2013-06-21 4:46 ` Alex Williamson
2013-06-21 5:12 ` Benjamin Herrenschmidt [this message]
2013-06-21 6:03 ` Alex Williamson
2013-06-21 6:12 ` Benjamin Herrenschmidt
2013-06-21 6:40 ` Alexey Kardashevskiy
2013-06-23 15:06 ` Anthony Liguori
2013-06-24 4:44 ` Alex Williamson
2013-06-24 12:25 ` Anthony Liguori
2013-06-24 7:13 ` Gleb Natapov
2013-06-24 12:32 ` Anthony Liguori
2013-06-24 12:37 ` Alexander Graf
2013-06-24 13:06 ` Gleb Natapov
2013-06-24 13:34 ` Anthony Liguori
2013-06-24 13:41 ` Michael S. Tsirkin
2013-06-24 14:31 ` Anthony Liguori
2013-06-24 14:34 ` Alexander Graf
2013-06-24 15:17 ` Anthony Liguori
2013-06-24 16:48 ` Gleb Natapov
2013-06-24 16:35 ` Gleb Natapov
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