From b4a30d648b656ce6cea40ed7c10e6fdf950a45ce Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 4 Jan 2017 14:29:08 +0100 Subject: [PATCH] x86/mwait-idle: add CPU model 0x4a (Atom Z34xx series) Add CPU ID for Atom Z34xx processors. Datasheets indicate support for this, detailed information about potential quirks or limitations are missing, though. So we just reuse the definition from official BSP code. Signed-off-by: Andy Shevchenko Signed-off-by: Len Brown [Linux commit: 5e7ec268fd48d63cfd0e3a9be6c6443f01673bd4] Signed-off-by: Jan Beulich Acked-by: Andrew Cooper --- xen/arch/x86/cpu/mwait-idle.c | 39 +++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) diff --git a/xen/arch/x86/cpu/mwait-idle.c b/xen/arch/x86/cpu/mwait-idle.c index 290c57baa3..e3cda1cd0a 100644 --- a/xen/arch/x86/cpu/mwait-idle.c +++ b/xen/arch/x86/cpu/mwait-idle.c @@ -580,6 +580,40 @@ static const struct cpuidle_state atom_cstates[] = { {} }; +static const struct cpuidle_state tangier_cstates[] = { + { + .name = "C1-TNG", + .flags = MWAIT2flg(0x00), + .exit_latency = 1, + .target_residency = 4, + }, + { + .name = "C4-TNG", + .flags = MWAIT2flg(0x30) | CPUIDLE_FLAG_TLB_FLUSHED, + .exit_latency = 100, + .target_residency = 400, + }, + { + .name = "C6-TNG", + .flags = MWAIT2flg(0x52) | CPUIDLE_FLAG_TLB_FLUSHED, + .exit_latency = 140, + .target_residency = 560, + }, + { + .name = "C7-TNG", + .flags = MWAIT2flg(0x60) | CPUIDLE_FLAG_TLB_FLUSHED, + .exit_latency = 1200, + .target_residency = 4000, + }, + { + .name = "C9-TNG", + .flags = MWAIT2flg(0x64) | CPUIDLE_FLAG_TLB_FLUSHED, + .exit_latency = 10000, + .target_residency = 20000, + }, + {} +}; + static const struct cpuidle_state avn_cstates[] = { { .name = "C1-AVN", @@ -800,6 +834,10 @@ static const struct idle_cpu idle_cpu_atom = { .state_table = atom_cstates, }; +static const struct idle_cpu idle_cpu_tangier = { + .state_table = tangier_cstates, +}; + static const struct idle_cpu idle_cpu_lincroft = { .state_table = atom_cstates, .auto_demotion_disable_flags = ATM_LNC_C6_AUTO_DEMOTE, @@ -889,6 +927,7 @@ static const struct x86_cpu_id intel_idle_ids[] __initconstrel = { ICPU(0x2d, snb), ICPU(0x36, atom), ICPU(0x37, byt), + ICPU(0x4a, tangier), ICPU(0x4c, cht), ICPU(0x3a, ivb), ICPU(0x3e, ivt), -- 2.30.2