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From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Christoffer Dall <c.dall@virtualopensystems.com>
Cc: Alexander Graf <agraf@suse.de>,
	kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org,
	kvm-ppc <kvm-ppc@vger.kernel.org>,
	Paul Mackerras <paulus@au1.ibm.com>
Subject: Re: [kvmarm] [RFC PATCH 0/3] KVM: ARM: Get rid of hardcoded VGIC addresses
Date: Wed, 17 Oct 2012 21:19:05 +0000	[thread overview]
Message-ID: <1350508745.4678.95.camel@pasglop> (raw)
In-Reply-To: <CANM98q+gfcp86zVV0B1t2aOKTftFegs6dk-+DNc-78LijueOiw@mail.gmail.com>

On Wed, 2012-10-17 at 16:39 -0400, Christoffer Dall wrote:

> > Have you talked to Ben about this one? He wanted to design a new, more
> > flexible irqchip API that would work for XICS & MPIC. Maybe there's some
> > room for cooperation here?
> >
> I have not - Ben, what do you have in mind?

I've been sidetracked to some other stuff so for now Paul (CC) is taking
over my interrupt patches.

We initially changes IRQ_CREATE_IRQCHIP to take an argument but that was
causing an x86 ABI breakage (ioctl number changing). So we'll probably
be creating a new one.

From there, nothing fancy really, just an ioctl with an IRQ chip type at
the beginning followed by a union of type-specific parameters.

The main problem we haven't sorted out yet is how to replace some of the
horrors related to mapping interrupts that have tendrils all the way
into virtio-pci etc... in kemu that don't apply to use (well mostly) and
the interaction with in-kernel generated interrupts to avoid going
through qemu for vhost ec...

Cheers,
Ben.



WARNING: multiple messages have this Message-ID (diff)
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
To: Christoffer Dall <c.dall@virtualopensystems.com>
Cc: Alexander Graf <agraf@suse.de>,
	kvmarm@lists.cs.columbia.edu, kvm@vger.kernel.org,
	kvm-ppc <kvm-ppc@vger.kernel.org>,
	Paul Mackerras <paulus@au1.ibm.com>
Subject: Re: [kvmarm] [RFC PATCH 0/3] KVM: ARM: Get rid of hardcoded VGIC addresses
Date: Thu, 18 Oct 2012 08:19:05 +1100	[thread overview]
Message-ID: <1350508745.4678.95.camel@pasglop> (raw)
In-Reply-To: <CANM98q+gfcp86zVV0B1t2aOKTftFegs6dk-+DNc-78LijueOiw@mail.gmail.com>

On Wed, 2012-10-17 at 16:39 -0400, Christoffer Dall wrote:

> > Have you talked to Ben about this one? He wanted to design a new, more
> > flexible irqchip API that would work for XICS & MPIC. Maybe there's some
> > room for cooperation here?
> >
> I have not - Ben, what do you have in mind?

I've been sidetracked to some other stuff so for now Paul (CC) is taking
over my interrupt patches.

We initially changes IRQ_CREATE_IRQCHIP to take an argument but that was
causing an x86 ABI breakage (ioctl number changing). So we'll probably
be creating a new one.

>From there, nothing fancy really, just an ioctl with an IRQ chip type at
the beginning followed by a union of type-specific parameters.

The main problem we haven't sorted out yet is how to replace some of the
horrors related to mapping interrupts that have tendrils all the way
into virtio-pci etc... in kemu that don't apply to use (well mostly) and
the interaction with in-kernel generated interrupts to avoid going
through qemu for vhost ec...

Cheers,
Ben.

  reply	other threads:[~2012-10-17 21:19 UTC|newest]

Thread overview: 102+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-10-14  0:04 [RFC PATCH 0/3] KVM: ARM: Get rid of hardcoded VGIC addresses Christoffer Dall
2012-10-14  0:04 ` [RFC PATCH 1/3] KVM: ARM: Introduce KVM_INIT_IRQCHIP ioctl Christoffer Dall
2012-10-17 20:21   ` Peter Maydell
2012-10-17 20:23     ` Christoffer Dall
2012-10-17 20:31       ` Peter Maydell
2012-10-17 20:39         ` Christoffer Dall
2012-10-18 12:20   ` Avi Kivity
2012-10-19 18:42     ` Christoffer Dall
2012-10-14  0:04 ` [RFC PATCH 2/3] KVM: ARM: Introduce KVM_SET_DEVICE_ADDRESS ioctl Christoffer Dall
2012-10-17 20:29   ` Peter Maydell
2012-10-19 18:46     ` Christoffer Dall
2012-10-19 20:24       ` Peter Maydell
2012-10-19 20:27         ` Christoffer Dall
2012-10-19 20:33           ` Christoffer Dall
2012-10-14  0:04 ` [RFC PATCH 3/3] KVM: ARM: Split KVM_CREATE_IRQCHIP and KVM_INIT_IRQCHIP Christoffer Dall
2012-10-18 11:15   ` Peter Maydell
2012-10-17 20:38 ` [kvmarm] [RFC PATCH 0/3] KVM: ARM: Get rid of hardcoded VGIC addresses Alexander Graf
2012-10-17 20:38   ` Alexander Graf
2012-10-17 20:39   ` Christoffer Dall
2012-10-17 20:39     ` Christoffer Dall
2012-10-17 21:19     ` Benjamin Herrenschmidt [this message]
2012-10-17 21:19       ` Benjamin Herrenschmidt
2012-10-17 22:10     ` Paul Mackerras
2012-10-17 22:10       ` Paul Mackerras
2012-10-17 23:58       ` Benjamin Herrenschmidt
2012-10-17 23:58         ` Benjamin Herrenschmidt
2012-10-18 13:48         ` Christoffer Dall
2012-10-18 13:48           ` Christoffer Dall
2012-10-18 13:49           ` Alexander Graf
2012-10-18 13:49             ` Alexander Graf
2012-10-18 15:25             ` Avi Kivity
2012-10-18 15:25               ` Avi Kivity
2012-10-23 10:48           ` Jan Kiszka
2012-10-23 10:48             ` Jan Kiszka
2012-10-23 10:52             ` Peter Maydell
2012-10-23 10:52               ` Peter Maydell
2012-10-23 11:00               ` Jan Kiszka
2012-10-23 11:00                 ` Jan Kiszka
2012-10-23 11:04                 ` Peter Maydell
2012-10-23 11:04                   ` Peter Maydell
2012-10-23 11:08                   ` Jan Kiszka
2012-10-23 11:08                     ` Jan Kiszka
2012-10-24  0:50             ` Paul Mackerras
2012-10-24  0:50               ` Paul Mackerras
2012-10-25 11:57               ` Jan Kiszka
2012-10-25 11:57                 ` Jan Kiszka
2012-10-25 16:14               ` Paolo Bonzini
2012-10-25 16:14                 ` Paolo Bonzini
2012-10-25 16:32                 ` Jan Kiszka
2012-10-25 16:32                   ` Jan Kiszka
2012-10-25 18:27                   ` Paolo Bonzini
2012-10-25 18:27                     ` Paolo Bonzini
2012-10-25 19:40                     ` Benjamin Herrenschmidt
2012-10-25 19:40                       ` Benjamin Herrenschmidt
2012-10-26  9:58                       ` Paolo Bonzini
2012-10-26  9:58                         ` Paolo Bonzini
2012-10-26 10:09                         ` Peter Maydell
2012-10-26 10:09                           ` Peter Maydell
2012-10-26 10:15                           ` Paolo Bonzini
2012-10-26 10:15                             ` Paolo Bonzini
2012-10-26 10:22                             ` Jan Kiszka
2012-10-26 10:22                               ` Jan Kiszka
2012-10-26 10:44                             ` Benjamin Herrenschmidt
2012-10-26 10:44                               ` Benjamin Herrenschmidt
2012-10-26 11:00                               ` Jan Kiszka
2012-10-26 11:00                                 ` Jan Kiszka
2012-10-26 11:09                                 ` Benjamin Herrenschmidt
2012-10-26 11:09                                   ` Benjamin Herrenschmidt
2012-10-26 11:57                                   ` Paolo Bonzini
2012-10-26 11:57                                     ` Paolo Bonzini
2012-10-26 12:08                                     ` Peter Maydell
2012-10-26 12:08                                       ` Peter Maydell
2012-10-26 12:41                                       ` Jan Kiszka
2012-10-26 12:41                                         ` Jan Kiszka
2012-10-26 20:21                                     ` Benjamin Herrenschmidt
2012-10-26 20:21                                       ` Benjamin Herrenschmidt
2012-10-26 11:17                               ` Peter Maydell
2012-10-26 11:17                                 ` Peter Maydell
2012-10-26 11:39                                 ` Benjamin Herrenschmidt
2012-10-26 11:39                                   ` Benjamin Herrenschmidt
2012-10-26 12:39                                   ` Jan Kiszka
2012-10-26 12:39                                     ` Jan Kiszka
2012-10-26 20:45                                     ` Benjamin Herrenschmidt
2012-10-26 20:45                                       ` Benjamin Herrenschmidt
2012-10-26 22:03                                       ` Benjamin Herrenschmidt
2012-10-26 22:03                                         ` Benjamin Herrenschmidt
2012-10-27  8:06                                         ` Jan Kiszka
2012-10-27  8:06                                           ` Jan Kiszka
2012-10-27 10:01                                         ` Peter Maydell
2012-10-27 10:01                                           ` Peter Maydell
2012-10-28 22:19                                           ` Benjamin Herrenschmidt
2012-10-28 22:19                                             ` Benjamin Herrenschmidt
2012-10-26 10:37                         ` Benjamin Herrenschmidt
2012-10-26 10:37                           ` Benjamin Herrenschmidt
2012-10-26 10:40                           ` Paolo Bonzini
2012-10-26 10:40                             ` Paolo Bonzini
2012-10-26 10:47                             ` Benjamin Herrenschmidt
2012-10-26 10:47                               ` Benjamin Herrenschmidt
2012-10-26 11:47                               ` Paolo Bonzini
2012-10-26 11:47                                 ` Paolo Bonzini
2012-10-25 19:39                 ` Benjamin Herrenschmidt
2012-10-25 19:39                   ` Benjamin Herrenschmidt

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