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Re: Support generic disabling of all XSAVE features

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Andi Kleen <andi@firstfloor.org> writes:

Any comments on this patchkit? If there are no objections please merge.

-Andi

> For performance testing and debugging it can be useful to disable XSAVE
> features individually. This patchkit hooks up XSAVE with the
> generic clearcpuid=... option, so that disabling a CPUID feature
> automatically disables the respective XSAVE feature.
>
> It also cleans up CPUID dependency management. Currently it's
> possible to generate configurations with cleacpuid that crash.
>
> It replaces an earlier patchkit that did this with special
> case options.
>
> v1:
> Initial post
> v2:
> Work around broken lguest by exporting set_cpu_cap
> Repost with cover letter

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Support generic disabling of all XSAVE features Andi Kleen <andi@firstfloor.org> - 2017-06-08 01:40 +0200
  [PATCH v2 5/5] x86/xsave: Using generic CPUID clearing when disabling XSAVE Andi Kleen <andi@firstfloor.org> - 2017-06-08 01:40 +0200
  [PATCH v2 4/5] x86/xsave: Make XSAVE check the base CPUID features before enabling Andi Kleen <andi@firstfloor.org> - 2017-06-08 01:40 +0200
  Re: Support generic disabling of all XSAVE features Andi Kleen <andi@firstfloor.org> - 2017-06-13 02:20 +0200

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