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Re: [Qemu-devel] [PATCH v2] pc: allow raising low memory via max-ram-bel
From: |
Gerd Hoffmann |
Subject: |
Re: [Qemu-devel] [PATCH v2] pc: allow raising low memory via max-ram-below-4g option |
Date: |
Fri, 22 Jan 2016 11:51:54 +0100 |
Hi,
> > > I wonder whether we should just bite the bullet and ask management to
> > > maintain the physical memory map for us, instead of trying to give us
> > > hints.
> >
> > I doubt this simplified things, given the backward compatibility
> > constrains we have.
> >
> > cheers,
> > Gerd
>
> That's exactly what would become simple.
> For backwards compatibility we would leave things alone
> if the new flags for the memory map aren't specified.
But we'll add a bunch of new code for the new config mode which allows
management to maintain the physical memory map. And we'll expect
management know about a bunch of machine type internals. That isn't a
simplification.
> This would allow people to e.g. allocate phy address
> ranges for things like nvdimm which has been
> problematic in the past.
Didn't follow nvdimm discussions. If you think we really need that
anyway to solve certain issues, sure, go ahead and I happily adjust this
patch to use the new infrastructure.
cheers,
Gerd
- Re: [Qemu-devel] [PATCH v2] pc: allow raising low memory via max-ram-below-4g option, (continued)
- Re: [Qemu-devel] [PATCH v2] pc: allow raising low memory via max-ram-below-4g option, Marcel Apfelbaum, 2016/01/11
- Re: [Qemu-devel] [PATCH v2] pc: allow raising low memory via max-ram-below-4g option, Eric Blake, 2016/01/14
- Re: [Qemu-devel] [PATCH v2] pc: allow raising low memory via max-ram-below-4g option, Eduardo Habkost, 2016/01/19
- Re: [Qemu-devel] [PATCH v2] pc: allow raising low memory via max-ram-below-4g option, Gerd Hoffmann, 2016/01/20
- Re: [Qemu-devel] [PATCH v2] pc: allow raising low memory via max-ram-below-4g option, Eduardo Habkost, 2016/01/20
- Re: [Qemu-devel] [PATCH v2] pc: allow raising low memory via max-ram-below-4g option, Eduardo Habkost, 2016/01/20
- Re: [Qemu-devel] [PATCH v2] pc: allow raising low memory via max-ram-below-4g option, Michael S. Tsirkin, 2016/01/20
- Re: [Qemu-devel] [PATCH v2] pc: allow raising low memory via max-ram-below-4g option, Gerd Hoffmann, 2016/01/21
- Re: [Qemu-devel] [PATCH v2] pc: allow raising low memory via max-ram-below-4g option, Michael S. Tsirkin, 2016/01/21
- Re: [Qemu-devel] [PATCH v2] pc: allow raising low memory via max-ram-below-4g option,
Gerd Hoffmann <=
- Re: [Qemu-devel] [PATCH v2] pc: allow raising low memory via max-ram-below-4g option, Michael S. Tsirkin, 2016/01/24