#15210: KDL: Unexpected exception "SIMD Floating-Point Exception" occurred in
kernel mode!
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Reporter: konrad | Owner: nobody
Type: bug | Status: new
Priority: normal | Milestone: Unscheduled
Component: System/Kernel | Version: R1/Development
Resolution: | Keywords:
Blocked By: | Blocking:
Has a Patch: 0 | Platform: All
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Comment (by tqh):
Looked it up, saving restoring fp (and simd on 32bit) is so expensive it
is not done on context switching. Therefore you need to write code that
save/restore them perfetly on all exit cases and without messing up stack
order. So it's just something you should avoid. SIMD on 64 bit is fine
though.
Havn't looked at our own context-switching though.
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Ticket URL: <https://dev.haiku-os.org/ticket/15210#comment:5>
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