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Re: [Qemu-devel] [PATCH] Inter-VM shared memory PCI device
From: |
Alexander Graf |
Subject: |
Re: [Qemu-devel] [PATCH] Inter-VM shared memory PCI device |
Date: |
Mon, 08 Mar 2010 11:57:18 +0100 |
User-agent: |
Thunderbird 2.0.0.23 (X11/20090817) |
Jamie Lokier wrote:
> 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.
>
I agree. Hence there should be a safety check so people can't corrupt
their data silently.
Alex
- [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
- Re: [Qemu-devel] [PATCH] Inter-VM shared memory PCI device, Anthony Liguori, 2010/03/10