From: Paolo Bonzini <pbonzini@redhat.com>
To: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Jan Kiszka <jan.kiszka@siemens.com>,
Peter Maydell <peter.maydell@linaro.org>,
Paul Mackerras <paulus@samba.org>,
Christoffer Dall <c.dall@virtualopensystems.com>,
Alexander Graf <agraf@suse.de>,
"kvmarm@lists.cs.columbia.edu" <kvmarm@lists.cs.columbia.edu>,
"kvm@vger.kernel.org" <kvm@vger.kernel.org>,
kvm-ppc <kvm-ppc@vger.kernel.org>
Subject: Re: [kvmarm] [RFC PATCH 0/3] KVM: ARM: Get rid of hardcoded VGIC addresses
Date: Fri, 26 Oct 2012 11:57:54 +0000 [thread overview]
Message-ID: <508A7AC2.7040400@redhat.com> (raw)
In-Reply-To: <1351249794.12271.27.camel@pasglop>
Il 26/10/2012 13:09, Benjamin Herrenschmidt ha scritto:
> The only cases I can think of are the association between a virtual
> interrupt (ie, an interrupt in the guest interrupt number space) and an
> in-kernel source for that interrupt, ie, vhost and PCI pass-through
> essentially.
If you exclude old-style PCI pass-through and limit yourself to vhost
and VFIO, you can treat irqfd as "the" in-kernel source of the
interrupt. Then you need a mapping between MSIs and numbers used in
KVM_IRQFD ("GSIs").
This is what KVM_SET_GSI_ROUTING modifies, and basically the mapping is
modified every time a vector is masked/unmasked in the MSI-X table.
Paolo
next prev parent reply other threads:[~2012-10-26 11:57 UTC|newest]
Thread overview: 43+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1350173065-35350-1-git-send-email-c.dall@virtualopensystems.com>
2012-10-17 20:38 ` [kvmarm] [RFC PATCH 0/3] KVM: ARM: Get rid of hardcoded VGIC addresses Alexander Graf
2012-10-17 20:39 ` Christoffer Dall
2012-10-17 21:19 ` Benjamin Herrenschmidt
2012-10-17 22:10 ` Paul Mackerras
2012-10-17 23:58 ` Benjamin Herrenschmidt
2012-10-18 13:48 ` Christoffer Dall
2012-10-18 13:49 ` Alexander Graf
2012-10-18 15:25 ` Avi Kivity
2012-10-23 10:48 ` Jan Kiszka
2012-10-23 10:52 ` Peter Maydell
2012-10-23 11:00 ` Jan Kiszka
2012-10-23 11:04 ` Peter Maydell
2012-10-23 11:08 ` Jan Kiszka
2012-10-24 0:50 ` Paul Mackerras
2012-10-25 11:57 ` Jan Kiszka
2012-10-25 16:14 ` Paolo Bonzini
2012-10-25 16:32 ` Jan Kiszka
2012-10-25 18:27 ` Paolo Bonzini
2012-10-25 19:40 ` Benjamin Herrenschmidt
2012-10-26 9:58 ` Paolo Bonzini
2012-10-26 10:09 ` Peter Maydell
2012-10-26 10:15 ` Paolo Bonzini
2012-10-26 10:22 ` Jan Kiszka
2012-10-26 10:44 ` Benjamin Herrenschmidt
2012-10-26 11:00 ` Jan Kiszka
2012-10-26 11:09 ` Benjamin Herrenschmidt
2012-10-26 11:57 ` Paolo Bonzini [this message]
2012-10-26 12:08 ` Peter Maydell
2012-10-26 12:41 ` Jan Kiszka
2012-10-26 20:21 ` Benjamin Herrenschmidt
2012-10-26 11:17 ` Peter Maydell
2012-10-26 11:39 ` Benjamin Herrenschmidt
2012-10-26 12:39 ` Jan Kiszka
2012-10-26 20:45 ` Benjamin Herrenschmidt
2012-10-26 22:03 ` Benjamin Herrenschmidt
2012-10-27 8:06 ` Jan Kiszka
2012-10-27 10:01 ` Peter Maydell
2012-10-28 22:19 ` Benjamin Herrenschmidt
2012-10-26 10:37 ` Benjamin Herrenschmidt
2012-10-26 10:40 ` Paolo Bonzini
2012-10-26 10:47 ` Benjamin Herrenschmidt
2012-10-26 11:47 ` Paolo Bonzini
2012-10-25 19:39 ` Benjamin Herrenschmidt
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