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Re: Do x86 or arm processors have "interrupt overload protection" or maybe windows ?

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On Sat, 02 Jul 2011 09:29:18 +0200, Terje Mathisen wrote:

> John Savard wrote:
>> Also, at least an x86 has a *stack*, so it's luckier than a 360 in the
>> event of an interrupt.
> 
> Not anymore:
> 
> Current x64 cpus with SSE++ can have a K or more of architecture-visible
> processor task state.

True, but a FLIH only needs to save what it will use, which is why there 
are rules against using floating point in such situations.  And when your 
interrupt makes a higher-priority task runnable and you actually have to 
switch tasks, there is probably a fair bit of state even beyond the 
architecture-visible register state that needs to be saved/copied.  Just 
as well there are lots of cores now, all with their own state, mostly 
sitting around waiting for something to do...

[No, I mostly don't get to pay with those, yet.  Just guessing.]

Cheers,

-- 
Andrew

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Re: Do x86 or arm processors have "interrupt overload protection" or maybe windows  ? MitchAlsup <MitchAlsup@aol.com> - 2011-07-01 07:45 -0700
  Re: Do x86 or arm processors have "interrupt overload protection" or maybe windows  ? vandys@vsta.org - 2011-07-01 17:03 +0000
  Re: Do x86 or arm processors have "interrupt overload protection" or maybe windows  ? jsavard@excxn.aNOSPAMb.cdn.invalid (John Savard) - 2011-07-01 20:10 +0000
    Re: Do x86 or arm processors have "interrupt overload protection" or maybe windows  ? Terje Mathisen <"terje.mathisen at tmsw.no"> - 2011-07-02 09:29 +0200
      Re: Do x86 or arm processors have "interrupt overload protection" or maybe windows  ? Andrew Reilly <areilly---@bigpond.net.au> - 2011-07-02 13:37 +0000
  Re: Do x86 or arm processors have "interrupt overload protection" or maybe windows  ? "Skybuck Flying" <Windows7IsOK@DreamPC2006.com> - 2011-07-03 09:52 +0200
    Re: Do x86 or arm processors have "interrupt overload protection" or maybe windows  ? "Skybuck Flying" <Windows7IsOK@DreamPC2006.com> - 2011-07-03 09:58 +0200

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