Messages in this thread | | | From | Andi Kleen <> | Subject | Re: [PATCH 20/39] NLKD/x86-64 - switch_to() floating point adjustment | Date | Thu, 10 Nov 2005 14:24:53 +0100 |
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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?
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