Re: [Xen-devel] [PATCH v2] x86/AMD: write PAT after ucode update

2018-09-20 Thread Andrew Cooper
On 20/09/18 09:40, Jan Beulich wrote: > The increased number of messages (spec_ctrl.c:print_details()) within a > certain time window made me notice some slowness of boot time screen > output. Experimentally I've narrowed the time window to be from > immediately after the early ucode update on the

[Xen-devel] [PATCH v2] x86/AMD: write PAT after ucode update

2018-09-20 Thread Jan Beulich
The increased number of messages (spec_ctrl.c:print_details()) within a certain time window made me notice some slowness of boot time screen output. Experimentally I've narrowed the time window to be from immediately after the early ucode update on the BSP to the PAT write in cpu_init(). For that r