From 6e287713c94b40bbf21a378eab622108b1186233 Mon Sep 17 00:00:00 2001 From: Len Brown Date: Fri, 30 Aug 2013 11:00:07 +0200 Subject: [PATCH] x86/mwait_idle: initial C8, C9, C10 support Allow mwait_idle to utilize C8, C9, C10 when they are present on... "Fourth Generation Intel(R) Core(TM) Processors", which are based on Intel(R) microarchitecture code name Haswell. Signed-off-by: Len Brown Signed-off-by: Jan Beulich Acked-by: Keir Fraser --- xen/arch/x86/cpu/mwait-idle.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/xen/arch/x86/cpu/mwait-idle.c b/xen/arch/x86/cpu/mwait-idle.c index 879963215f..85179f2f81 100644 --- a/xen/arch/x86/cpu/mwait-idle.c +++ b/xen/arch/x86/cpu/mwait-idle.c @@ -252,6 +252,24 @@ static const struct cpuidle_state hsw_cstates[] = { .exit_latency = 166, .target_residency = 500, }, + { + .name = "C8-HSW", + .flags = MWAIT2flg(0x40) | CPUIDLE_FLAG_TLB_FLUSHED, + .exit_latency = 300, + .target_residency = 900, + }, + { + .name = "C9-HSW", + .flags = MWAIT2flg(0x50) | CPUIDLE_FLAG_TLB_FLUSHED, + .exit_latency = 600, + .target_residency = 1800, + }, + { + .name = "C10-HSW", + .flags = MWAIT2flg(0x60) | CPUIDLE_FLAG_TLB_FLUSHED, + .exit_latency = 2600, + .target_residency = 7700, + }, {} }; -- 2.30.2