Re: [Xen-devel] [PATCH] tools/libxc: Construct 32bit PV guests with L3 A/D bits set

2020-01-14 Thread Wei Liu
On Tue, Jan 14, 2020 at 12:39:21PM +, Andrew Cooper wrote: > With the 32 PAE build of Xen gone, 32bit PV guests' top level pagetables no > longer behave exactly like PAE in hardware. > > They should have A/D bits set, for the same performance reasons as apply to > other levels. This brings th

Re: [Xen-devel] [PATCH] tools/libxc: Construct 32bit PV guests with L3 A/D bits set

2020-01-14 Thread Jan Beulich
On 14.01.2020 13:39, Andrew Cooper wrote: > With the 32 PAE build of Xen gone, 32bit PV guests' top level pagetables no > longer behave exactly like PAE in hardware. > > They should have A/D bits set, for the same performance reasons as apply to > other levels. This brings the domain builder in l

[Xen-devel] [PATCH] tools/libxc: Construct 32bit PV guests with L3 A/D bits set

2020-01-14 Thread Andrew Cooper
With the 32 PAE build of Xen gone, 32bit PV guests' top level pagetables no longer behave exactly like PAE in hardware. They should have A/D bits set, for the same performance reasons as apply to other levels. This brings the domain builder in line with how Xen constructs a 32bit dom0. As a pure