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Groups > linux.kernel > #1499507
| From | Grzegorz Andrejczuk <grzegorz.andrejczuk@intel.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH v2 0/4] Enabling Ring 3 MONITOR/MWAIT feature for Knights Landing |
| Date | 2016-10-12 14:20 +0200 |
| Message-ID | <srqFP-4gb-5@gated-at.bofh.it> (permalink) |
| Organization | linux.* mail to news gateway |
These patches enable Intel Xeon Phi x200 feature to use MONITOR/MWAIT instruction in ring 3 (userspace) Patches set MSR 0x140 for all logical CPUs. Then expose it as CPU feature and introduces elf HWCAP capability for x86. Reference: https://software.intel.com/en-us/blogs/2016/10/06/intel-xeon-phi-product-family-x200-knl-user-mode-ring-3-monitor-and-mwait v2: Check MSR before wrmsrl Shortened names Used Word 3 for feature init_scattered_cpuid_features() Fixed commit messages Grzegorz Andrejczuk (4): Add R3MWAIT register and bit to msr-info.h Add enabling of the R3 MWAIT during boot for KNL Add hwcap2 for x86 Add R3MWAIT to CPU features arch/x86/include/asm/cpufeatures.h | 2 ++ arch/x86/include/asm/elf.h | 7 +++++++ arch/x86/include/asm/msr-index.h | 5 +++++ arch/x86/include/uapi/asm/hwcap.h | 7 +++++++ arch/x86/kernel/cpu/common.c | 6 ++++++ arch/x86/kernel/cpu/intel.c | 27 +++++++++++++++++++++++++++ arch/x86/kernel/cpu/scattered.c | 5 +++++ 7 files changed, 59 insertions(+) create mode 100644 arch/x86/include/uapi/asm/hwcap.h -- 2.5.1
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[PATCH v2 0/4] Enabling Ring 3 MONITOR/MWAIT feature for Knights Landing Grzegorz Andrejczuk <grzegorz.andrejczuk@intel.com> - 2016-10-12 14:20 +0200
[PATCH v2 2/4] Add enabling of the R3 MWAIT during boot for KNL Grzegorz Andrejczuk <grzegorz.andrejczuk@intel.com> - 2016-10-12 14:20 +0200
Re: [PATCH v2 2/4] Add enabling of the R3 MWAIT during boot for KNL Thomas Gleixner <tglx@linutronix.de> - 2016-10-12 15:40 +0200
Re: [PATCH v2 2/4] Add enabling of the R3 MWAIT during boot for KNL Dave Hansen <dave.hansen@linux.intel.com> - 2016-10-12 16:50 +0200
Re: [PATCH v2 2/4] Add enabling of the R3 MWAIT during boot for KNL Thomas Gleixner <tglx@linutronix.de> - 2016-10-12 15:40 +0200
Re: [PATCH v2 2/4] Add enabling of the R3 MWAIT during boot for KNL Dave Hansen <dave.hansen@linux.intel.com> - 2016-10-12 18:40 +0200
Re: [PATCH v2 2/4] Add enabling of the R3 MWAIT during boot for KNL Thomas Gleixner <tglx@linutronix.de> - 2016-10-13 18:10 +0200
Re: [PATCH v2 2/4] Add enabling of the R3 MWAIT during boot for KNL Dave Hansen <dave.hansen@linux.intel.com> - 2016-10-12 19:30 +0200
[PATCH v2 4/4] Add R3MWAIT to CPU features Grzegorz Andrejczuk <grzegorz.andrejczuk@intel.com> - 2016-10-12 14:30 +0200
Re: [PATCH v2 4/4] Add R3MWAIT to CPU features Borislav Petkov <bp@suse.de> - 2016-10-12 15:00 +0200
Re: [PATCH v2 4/4] Add R3MWAIT to CPU features Thomas Gleixner <tglx@linutronix.de> - 2016-10-12 15:30 +0200
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