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authorLen Brown <len.brown@intel.com>2014-07-31 15:21:24 -0400
committerLen Brown <len.brown@intel.com>2014-08-15 17:06:14 -0400
commit8c058d53f6f2eb0b9cd3bc4ce5c053a64dded671 (patch)
treefb657c7092c97ce7452746008c2894ec17e481ae /arch/x86
parent19583ca584d6f574384e17fe7613dfaeadcdc4a6 (diff)
downloadlinux-8c058d53f6f2eb0b9cd3bc4ce5c053a64dded671.tar.gz
intel_idle: Disable Baytrail Core and Module C6 auto-demotion
Power efficiency improves on Baytrail (Intel Atom Processor E3000) when Linux disables C6 auto-demotion. Based on work by Srinidhi Kasagar <srinidhi.kasagar@intel.com>. Signed-off-by: Len Brown <len.brown@intel.com> Cc: x86@kernel.org
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/include/uapi/asm/msr-index.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/include/uapi/asm/msr-index.h b/arch/x86/include/uapi/asm/msr-index.h
index fcf2b3ae1bf..4a7aecd2ea1 100644
--- a/arch/x86/include/uapi/asm/msr-index.h
+++ b/arch/x86/include/uapi/asm/msr-index.h
@@ -149,6 +149,9 @@
#define MSR_CORE_C1_RES 0x00000660
+#define MSR_CC6_DEMOTION_POLICY_CONFIG 0x00000668
+#define MSR_MC6_DEMOTION_POLICY_CONFIG 0x00000669
+
#define MSR_AMD64_MC0_MASK 0xc0010044
#define MSR_IA32_MCx_CTL(x) (MSR_IA32_MC0_CTL + 4*(x))