Re: [PATCH v7 14/17] spapr: Don't attempt to clamp RMA to VRMA constraint

2020-03-03 Thread Greg Kurz
On Tue, 3 Mar 2020 14:43:48 +1100 David Gibson wrote: > The Real Mode Area (RMA) is the part of memory which a guest can access > when in real (MMU off) mode. Of course, for a guest under KVM, the MMU > isn't really turned off, it's just in a special translation mode - Virtual > Real Mode Area

[PATCH v7 14/17] spapr: Don't attempt to clamp RMA to VRMA constraint

2020-03-02 Thread David Gibson
The Real Mode Area (RMA) is the part of memory which a guest can access when in real (MMU off) mode. Of course, for a guest under KVM, the MMU isn't really turned off, it's just in a special translation mode - Virtual Real Mode Area (VRMA) - which looks like real mode in guest mode. The mechanics