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Groups > linux.kernel > #1343472
| From | Dave Hansen <dave.hansen@linux.intel.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH v2 9/9] x86/xsaves: Re-enable XSAVES |
| Date | 2016-02-25 21:40 +0100 |
| Message-ID | <r6aRA-Ng-29@gated-at.bofh.it> (permalink) |
| References | <r6aHU-HU-3@gated-at.bofh.it> <r6aRA-Ng-19@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
On 02/25/2016 12:26 PM, Yu-cheng Yu wrote: > - * ( This is easy to backport while we are fixing > - * XSAVES* support. ) > + * Most recent CPUs supporting XSAVES can run 64-bit mode. > + * Enable XSAVES for 64-bit. > */ > - setup_clear_cpu_cap(X86_FEATURE_XSAVES); > + if (!config_enabled(CONFIG_X86_64)) > + setup_clear_cpu_cap(X86_FEATURE_XSAVES); > } Is this intended to be permanent? If so, we would not be able to support any future supervisor features on 32-bit.
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[PATCH v2 0/9] x86/xsaves: Fix XSAVES known issues Yu-cheng Yu <yu-cheng.yu@intel.com> - 2016-02-25 21:30 +0100
[PATCH v2 4/9] x86/xsaves: Introduce a new check that allows correct xstates copy from kernel to user directly Yu-cheng Yu <yu-cheng.yu@intel.com> - 2016-02-25 21:40 +0100
[PATCH v2 2/9] x86/xsaves: Rename xstate_size to kernel_xstate_size to explicitly distinguish xstate size in kernel from user space Yu-cheng Yu <yu-cheng.yu@intel.com> - 2016-02-25 21:40 +0100
[PATCH v2 6/9] x86/xsaves: Supervisor state component offset Yu-cheng Yu <yu-cheng.yu@intel.com> - 2016-02-25 21:40 +0100
[PATCH v2 5/9] x86/xsaves: Align xstate components according to CPUID Yu-cheng Yu <yu-cheng.yu@intel.com> - 2016-02-25 21:40 +0100
[PATCH v2 3/9] x86/xsaves: Keep init_fpstate.xsave.header.xfeatures as zero for init optimization Yu-cheng Yu <yu-cheng.yu@intel.com> - 2016-02-25 21:40 +0100
[PATCH v2 9/9] x86/xsaves: Re-enable XSAVES Yu-cheng Yu <yu-cheng.yu@intel.com> - 2016-02-25 21:40 +0100
Re: [PATCH v2 9/9] x86/xsaves: Re-enable XSAVES Dave Hansen <dave.hansen@linux.intel.com> - 2016-02-25 21:40 +0100
Re: [PATCH v2 9/9] x86/xsaves: Re-enable XSAVES Yu-cheng Yu <yu-cheng.yu@intel.com> - 2016-02-25 22:10 +0100
[PATCH v2 7/9] x86/xsaves: Fix PTRACE frames for XSAVES Yu-cheng Yu <yu-cheng.yu@intel.com> - 2016-02-25 21:40 +0100
[PATCH v2 8/9] x86/xsaves: Fix XSTATE component offset print out Yu-cheng Yu <yu-cheng.yu@intel.com> - 2016-02-25 21:40 +0100
Re: [PATCH v2 0/9] x86/xsaves: Fix XSAVES known issues Dave Hansen <dave.hansen@linux.intel.com> - 2016-02-25 22:00 +0100
Re: [PATCH v2 0/9] x86/xsaves: Fix XSAVES known issues Yu-cheng Yu <yu-cheng.yu@intel.com> - 2016-02-25 22:10 +0100
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