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Groups > linux.kernel > #1391410

Re: [PATCH v4 0/10] x86/xsaves: Fix XSAVES known issues

From Dave Hansen <dave.hansen@linux.intel.com>
Newsgroups linux.kernel
Subject Re: [PATCH v4 0/10] x86/xsaves: Fix XSAVES known issues
Date 2016-04-29 22:40 +0200
Message-ID <rtnmG-3LT-19@gated-at.bofh.it> (permalink)
References <r92ut-2hO-1@gated-at.bofh.it> <rtl1w-1Wz-11@gated-at.bofh.it> <rtmTE-3yl-13@gated-at.bofh.it> <rtmTE-3yl-11@gated-at.bofh.it> <rtn3k-3Ce-15@gated-at.bofh.it>
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On 04/29/2016 01:07 PM, Yu-cheng Yu wrote:
> On Fri, Apr 29, 2016 at 01:03:43PM -0700, Dave Hansen wrote:
>>> That's not feasible.  Think of dynamic libraries or just-in-time 
>>> compilers.  What instruction set does /usr/bin/java use, for
>>> instance? :)
> The java argument is true. In that case or when the bitmask is
> missing, we can allocate for all supported features.

Remember, execve() doesn't replace the task_struct.  How do we resize
the task_struct at execve() time?  If /bin/bash doesn't use AVX, then
fork()s and execve()s an AVX-using program, what do we do?

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Thread

Re: [PATCH v4 0/10] x86/xsaves: Fix XSAVES known issues Dave Hansen <dave.hansen@linux.intel.com> - 2016-04-29 20:10 +0200
  Re: [PATCH v4 0/10] x86/xsaves: Fix XSAVES known issues Ingo Molnar <mingo@kernel.org> - 2016-04-29 21:50 +0200
  Re: [PATCH v4 0/10] x86/xsaves: Fix XSAVES known issues Dave Hansen <dave.hansen@linux.intel.com> - 2016-04-29 22:10 +0200
    Re: [PATCH v4 0/10] x86/xsaves: Fix XSAVES known issues Yu-cheng Yu <yu-cheng.yu@intel.com> - 2016-04-29 22:20 +0200
      Re: [PATCH v4 0/10] x86/xsaves: Fix XSAVES known issues Andy Lutomirski <luto@amacapital.net> - 2016-04-29 22:30 +0200
        Re: [PATCH v4 0/10] x86/xsaves: Fix XSAVES known issues Dave Hansen <dave.hansen@linux.intel.com> - 2016-04-29 22:50 +0200
          Re: [PATCH v4 0/10] x86/xsaves: Fix XSAVES known issues Andy Lutomirski <luto@amacapital.net> - 2016-04-29 22:50 +0200
            Re: [PATCH v4 0/10] x86/xsaves: Fix XSAVES known issues Dave Hansen <dave.hansen@linux.intel.com> - 2016-04-30 00:50 +0200
          Re: [PATCH v4 0/10] x86/xsaves: Fix XSAVES known issues Ingo Molnar <mingo@kernel.org> - 2016-04-30 10:00 +0200
            Re: [PATCH v4 0/10] x86/xsaves: Fix XSAVES known issues Dave Hansen <dave.hansen@linux.intel.com> - 2016-05-02 18:30 +0200
              Re: [PATCH v4 0/10] x86/xsaves: Fix XSAVES known issues Ingo Molnar <mingo@kernel.org> - 2016-05-02 20:40 +0200
      Re: [PATCH v4 0/10] x86/xsaves: Fix XSAVES known issues Dave Hansen <dave.hansen@linux.intel.com> - 2016-04-29 22:40 +0200
  Re: [PATCH v4 0/10] x86/xsaves: Fix XSAVES known issues Yu-cheng Yu <yu-cheng.yu@intel.com> - 2016-04-29 22:10 +0200

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