[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [Qemu-devel] [PATCH] pc: memhotplug: rise minimum DIMM addr/size ali
From: |
Dr. David Alan Gilbert |
Subject: |
Re: [Qemu-devel] [PATCH] pc: memhotplug: rise minimum DIMM addr/size alignment to 128Mb |
Date: |
Wed, 23 Sep 2015 11:32:59 +0100 |
User-agent: |
Mutt/1.5.24 (2015-08-30) |
* Paolo Bonzini (address@hidden) wrote:
>
>
> On 23/09/2015 11:36, Igor Mammedov wrote:
> > Also it's QEMU bug/fault and pushing workaround to upper layers
> > doesn't seem right when it's much easier to do it in QEMU itself.
>
> No, it's virtio's bug. It makes sense to push workaround for guest bugs
> as far from the hypervisor as possible.
But you really don't want to have higher level things having to align
addresses themselves. I could see adding an option for the required
alignment would be OK.
> If we want to increase the alignment in QEMU, I would prefer to have
> natural alignment which makes some sense and happens to work around the
> bug as well. Michael, Eduardo, any third opinions?
>
By natural alignment do you mean that an 'n MB' DIMM gets aligned to 'n MB' ?
Dave
> Paolo
--
Dr. David Alan Gilbert / address@hidden / Manchester, UK
Re: [Qemu-devel] [PATCH] pc: memhotplug: rise minimum DIMM addr/size alignment to 128Mb, Eduardo Habkost, 2015/09/21