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Re: [Qemu-devel] [PATCH] Inter-VM shared memory PCI device
From: |
Jamie Lokier |
Subject: |
Re: [Qemu-devel] [PATCH] Inter-VM shared memory PCI device |
Date: |
Mon, 8 Mar 2010 09:54:56 +0000 |
User-agent: |
Mutt/1.5.13 (2006-08-11) |
Alexander Graf wrote:
> Or we could put in some code that tells the guest the host shm
> architecture and only accept x86 on x86 for now. If anyone cares for
> other combinations, they're free to implement them.
>
> Seriously, we're looking at an interface designed for kvm here. Let's
> please keep it as simple and fast as possible for the actual use case,
> not some theoretically possible ones.
The concern is that a perfectly working guest image running on kvm,
the guest being some OS or app that uses this facility (_not_ a
kvm-only guest driver), is later run on qemu on a different host, and
then mostly works except for some silent data corruption.
That is not a theoretical scenario.
Well, the bit with this driver is theoretical, obviously :-)
But not the bit about moving to a different host.
-- Jamie
- [Qemu-devel] [PATCH] Support adding a file to qemu's ram allocation, Cam Macdonell, 2010/03/05
- Re: [Qemu-devel] [PATCH] Inter-VM shared memory PCI device, Avi Kivity, 2010/03/08
- Re: [Qemu-devel] [PATCH] Inter-VM shared memory PCI device, Paul Brook, 2010/03/08
- Re: [Qemu-devel] [PATCH] Inter-VM shared memory PCI device, Avi Kivity, 2010/03/08
- Re: [Qemu-devel] [PATCH] Inter-VM shared memory PCI device, Jamie Lokier, 2010/03/09
- Re: [Qemu-devel] [PATCH] Inter-VM shared memory PCI device, Anthony Liguori, 2010/03/09
- Re: [Qemu-devel] [PATCH] Inter-VM shared memory PCI device, Avi Kivity, 2010/03/10