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