Re: [Xen-devel] [PATCH v2 4/5] x86: allow limiting the max C-state sub-state

2019-07-19 Thread Andrew Cooper
On 03/07/2019 14:03, Jan Beulich wrote: > From: Ross Lagerwall > > Allow limiting the max C-state sub-state by appending to the max_cstate > command-line parameter. E.g. max_cstate=1,0 > The limit only applies to the highest legal C-state. For example: > max_cstate = 1, max_csubstate = 0 ==>

Re: [Xen-devel] [PATCH v2 4/5] x86: allow limiting the max C-state sub-state

2019-07-17 Thread Jan Beulich
On 16.07.2019 16:48, Roger Pau Monné wrote: > On Wed, Jul 03, 2019 at 01:03:02PM +, Jan Beulich wrote: >> @@ -592,7 +608,13 @@ static void acpi_processor_idle(void) >> >>do { >>cx = >states[next_state]; >> -} while ( cx->type > max_state && --next_state

Re: [Xen-devel] [PATCH v2 4/5] x86: allow limiting the max C-state sub-state

2019-07-16 Thread Roger Pau Monné
On Wed, Jul 03, 2019 at 01:03:02PM +, Jan Beulich wrote: > From: Ross Lagerwall > > Allow limiting the max C-state sub-state by appending to the max_cstate > command-line parameter. E.g. max_cstate=1,0 > The limit only applies to the highest legal C-state. For example: > max_cstate = 1,

[Xen-devel] [PATCH v2 4/5] x86: allow limiting the max C-state sub-state

2019-07-03 Thread Jan Beulich
From: Ross Lagerwall Allow limiting the max C-state sub-state by appending to the max_cstate command-line parameter. E.g. max_cstate=1,0 The limit only applies to the highest legal C-state. For example: max_cstate = 1, max_csubstate = 0 ==> C0, C1 okay, but not C1E max_cstate = 1,