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Re: [Qemu-devel] Re: [PATCH v3 0/2] Inter-VM shared memory PCI device
From: |
Jamie Lokier |
Subject: |
Re: [Qemu-devel] Re: [PATCH v3 0/2] Inter-VM shared memory PCI device |
Date: |
Fri, 26 Mar 2010 01:32:15 +0000 |
User-agent: |
Mutt/1.5.13 (2006-08-11) |
Cam Macdonell wrote:
> An irqfd can only trigger a single vector in a guest. Right now I
> only have one eventfd per guest. So ioeventfd/irqfd restricts the
> current implementation to a single vector that a guest can trigger.
> Without irqfd, eventfds can be used like registers a write the number
> of the vector they want to trigger, but as you point out it is racy.
It's not racy if you use a pipe instead of eventfd. :-)
Actually, why not? A byte pipe between guests would be more versatile.
Could it even integrate with virtio-serial, somehow?
-- Jamie
- [Qemu-devel] Re: [PATCH v3 0/2] Inter-VM shared memory PCI device, (continued)
- [Qemu-devel] Re: [PATCH v3 0/2] Inter-VM shared memory PCI device, Markus Armbruster, 2010/03/25
- [Qemu-devel] Re: [PATCH v3 0/2] Inter-VM shared memory PCI device, Cam Macdonell, 2010/03/25
- [Qemu-devel] Re: [PATCH v3 0/2] Inter-VM shared memory PCI device, Avi Kivity, 2010/03/25
- [Qemu-devel] Re: [PATCH v3 0/2] Inter-VM shared memory PCI device, Cam Macdonell, 2010/03/25
- [Qemu-devel] Re: [PATCH v3 0/2] Inter-VM shared memory PCI device, Avi Kivity, 2010/03/25
- [Qemu-devel] Re: [PATCH v3 0/2] Inter-VM shared memory PCI device, Cam Macdonell, 2010/03/25
- [Qemu-devel] Re: [PATCH v3 0/2] Inter-VM shared memory PCI device, Avi Kivity, 2010/03/25
- [Qemu-devel] Re: [PATCH v3 0/2] Inter-VM shared memory PCI device, Cam Macdonell, 2010/03/25
- [Qemu-devel] Re: [PATCH v3 0/2] Inter-VM shared memory PCI device, Avi Kivity, 2010/03/26
- Re: [Qemu-devel] Re: [PATCH v3 0/2] Inter-VM shared memory PCI device,
Jamie Lokier <=
- Re: [Qemu-devel] Re: [PATCH v3 0/2] Inter-VM shared memory PCI device, Cam Macdonell, 2010/03/26