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author | Len Brown <len.brown@intel.com> | 2013-04-22 14:04:07 +0200 |
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committer | Jan Beulich <jbeulich@suse.com> | 2013-04-22 14:04:07 +0200 |
commit | 96ef6e88359910738905ac2e1969dc05d7d7e7dc (patch) | |
tree | b9b41ccfed4aac993e134e947c71c1ba247ee5d9 /xen/arch/x86/cpu | |
parent | 6c7fa05f312d711370d396c597fdf7c13189cc4b (diff) | |
download | xen-96ef6e88359910738905ac2e1969dc05d7d7e7dc.tar.gz xen-96ef6e88359910738905ac2e1969dc05d7d7e7dc.tar.bz2 xen-96ef6e88359910738905ac2e1969dc05d7d7e7dc.zip |
x86/mwait_idle: support Haswell
This patch enables intel_idle to run on the next-generation Intel(R)
Microarchitecture code named "Haswell".
Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Jan Beulich <jbeulich@suse.com>
Acked-by: George Dunlap <george.dunlap@eu.citrix.com>
Diffstat (limited to 'xen/arch/x86/cpu')
-rw-r--r-- | xen/arch/x86/cpu/mwait-idle.c | 36 |
1 files changed, 36 insertions, 0 deletions
diff --git a/xen/arch/x86/cpu/mwait-idle.c b/xen/arch/x86/cpu/mwait-idle.c index 111c14906b..e0c97079be 100644 --- a/xen/arch/x86/cpu/mwait-idle.c +++ b/xen/arch/x86/cpu/mwait-idle.c @@ -200,6 +200,34 @@ static const struct cpuidle_state ivb_cstates[MWAIT_MAX_NUM_CSTATES] = { } }; +static const struct cpuidle_state hsw_cstates[MWAIT_MAX_NUM_CSTATES] = { + { /* MWAIT C0 */ }, + { /* MWAIT C1 */ + .name = "C1-HSW", + .flags = MWAIT2flg(0x00), + .exit_latency = 2, + .target_residency = 2, + }, + { /* MWAIT C2 */ + .name = "C3-HSW", + .flags = MWAIT2flg(0x10) | CPUIDLE_FLAG_TLB_FLUSHED, + .exit_latency = 33, + .target_residency = 100, + }, + { /* MWAIT C3 */ + .name = "C6-HSW", + .flags = MWAIT2flg(0x20) | CPUIDLE_FLAG_TLB_FLUSHED, + .exit_latency = 133, + .target_residency = 400, + }, + { /* MWAIT C4 */ + .name = "C7s-HSW", + .flags = MWAIT2flg(0x32) | CPUIDLE_FLAG_TLB_FLUSHED, + .exit_latency = 166, + .target_residency = 500, + }, +}; + static const struct cpuidle_state atom_cstates[MWAIT_MAX_NUM_CSTATES] = { { /* MWAIT C0 */ }, { /* MWAIT C1 */ @@ -348,6 +376,10 @@ static const struct idle_cpu idle_cpu_ivb = { .state_table = ivb_cstates, }; +static const struct idle_cpu idle_cpu_hsw = { + .state_table = hsw_cstates, +}; + #define ICPU(model, cpu) { 6, model, &idle_cpu_##cpu } static struct intel_idle_id { @@ -367,6 +399,10 @@ static struct intel_idle_id { ICPU(0x2d, snb), ICPU(0x3a, ivb), ICPU(0x3e, ivb), + ICPU(0x3c, hsw), + ICPU(0x3f, hsw), + ICPU(0x45, hsw), + ICPU(0x46, hsw), {} }; |