Re: [Qemu-devel] [PATCH] spapr: Remove support for explicitly allocated RMAs

2018-05-03 Thread David Gibson
On Thu, May 03, 2018 at 09:19:34AM +0200, Thomas Huth wrote: > On 03.05.2018 09:10, David Gibson wrote: > > Current POWER cpus allow for a VRMA, a special mapping which describes a > > guest's view of memory when in real mode (MMU off, from the guest's point > > of view). Older cpus didn't have th

Re: [Qemu-devel] [PATCH] spapr: Remove support for explicitly allocated RMAs

2018-05-03 Thread Thomas Huth
On 03.05.2018 09:10, David Gibson wrote: > Current POWER cpus allow for a VRMA, a special mapping which describes a > guest's view of memory when in real mode (MMU off, from the guest's point > of view). Older cpus didn't have that which meant that to support a guest > a special host-contiguous re

[Qemu-devel] [PATCH] spapr: Remove support for explicitly allocated RMAs

2018-05-03 Thread David Gibson
Current POWER cpus allow for a VRMA, a special mapping which describes a guest's view of memory when in real mode (MMU off, from the guest's point of view). Older cpus didn't have that which meant that to support a guest a special host-contiguous region of memory was needed to give the guest its R