Re: [PATCH 20/39] NLKD/x86-64 - switch_to() floating point adjustment

On Wednesday 09 November 2005 15:15, Jan Beulich wrote:
> Touching of the floating point state in a kernel debugger must be
> NMI-safe, specifically math_state_restore() must be able to deal with
> being called out of an NMI context. In order to do that reliably, the
> context switch code must take care to not leave a window open where
> the current task's TS_USEDFPU flag and CR0.TS could get out of sync.

Didn't we agree earlier on moving unlazy_fpu() down instead? 

-Andi
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Follow-Ups:
- Re: [PATCH 20/39] NLKD/x86-64 - switch_to() floating point adjustment
  - From: "Jan Beulich" <[email protected]>

References:
- [PATCH 0/39] NLKD - Novell Linux Kernel Debugger
  - From: "Jan Beulich" <[email protected]>
- [PATCH 19/39] NLKD/x86-64 - stack-pointer-invalid markers
  - From: "Jan Beulich" <[email protected]>
- [PATCH 20/39] NLKD/x86-64 - switch_to() floating point adjustment
  - From: "Jan Beulich" <[email protected]>

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