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[Bug 1001160] FIQ can trash stack when interrupting IRQ
- From: bugzilla-daemon at bugs dot ecos dot sourceware dot org
- To: unassigned at bugs dot ecos dot sourceware dot org
- Date: Wed, 23 Feb 2011 11:20:03 +0000
- Subject: [Bug 1001160] FIQ can trash stack when interrupting IRQ
- Auto-submitted: auto-generated
- References: <bug-1001160-777@http.bugs.ecos.sourceware.org/>
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Jonathan Larmour <jifl@ecoscentric.com> changed:
What |Removed |Added
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CC| |jifl@ecoscentric.com
--- Comment #2 from Jonathan Larmour <jifl@ecoscentric.com> 2011-02-23 11:20:01 GMT ---
I'm not sure myself, but in that case it would effectively mean that FIQ
support as a whole should be controlled by a CDL option, not just these two
instructions. Maybe that would be no bad thing as it isn't used very often; and
when it _is_ used, really people should be using a VSR, rather than letting
heavyweight code kludge it into something like an ISR (the effect of which is
to make FIQs slower than IRQs which can hardly be the point).
Personally I think that would probably be a useful change.
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