[haiku-bugs] Re: [Haiku] #8085: SMI storm on USB handover on AMD 970/SB950 AMD AM3+ UEFI motherboard
- From: "kallisti5" <trac@xxxxxxxxxxxx>
- Date: Thu, 26 Jan 2012 23:15:58 -0000
#8085: SMI storm on USB handover on AMD 970/SB950 AMD AM3+ UEFI motherboard
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Reporter: kallisti5 | Owner: mmlr
Type: bug | Status: in-progress
Priority: normal | Milestone: R1
Component: System/Kernel | Version: R1/Development
Resolution: | Keywords: SB950,UEFI, AHCI, APIC, IRQ
Blocked By: | Blocking:
Has a Patch: 1 | Platform: All
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Comment (by kallisti5):
Replying to [comment:15 mmlr]:
> While I agree that disabling all interrupts may very well be a problem,
not disabling them at all is not an option. The reason why they are
disabled is that we don't want to get interrupts while we haven't set up
an interrupt handler yet and therefore would cause an interrupt storm on
our end when the handover happens and doesn't clear the interrupts. Hence
disabling everything besides the ownership change would possibly work.
Yup.. Attaching the current patch I'm playing with.
Don't worry, I wouldn't commit anything like this until extensive testing
and review :)
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Ticket URL: <http://dev.haiku-os.org/ticket/8085#comment:16>
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