[haiku-bugs] Re: [Haiku] #8085: SMI storm on USB handover on AMD 970/SB950 AMD AM3+ UEFI motherboard (was: Interrupt routing issues on AMD 970/SB950 AMD AM3+ UEFI motherboard)
- From: "mmlr" <trac@xxxxxxxxxxxx>
- Date: Fri, 18 Nov 2011 15:29:12 -0000
#8085: SMI storm on USB handover on AMD 970/SB950 AMD AM3+ UEFI motherboard
-----------------------------+-----------------------------------------
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: 0 | Platform: All
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Changes (by mmlr):
* cc: mmlr@… (removed)
* owner: axeld => mmlr
* status: new => in-progress
Comment:
Replying to [comment:5 kallisti5]:
> {{{
> usb ehci -1: controller is still bios owned, waiting
> }}}
So again it is the BIOS handover. Both the OHCI and the EHCI handover code
is pretty much by the book as per the specs with some tweaks to work
around problems from the BSDs and Linux. So I can't say I would know
anything obvious to do from here on out. It is obvious that an SMI hits as
soon as the legacy handover is attempted for both OHCI and EHCI. There's
really nothing we can do about those, as the system management code is
priviledged. The only thing we can do is trying to work around the issue
that triggers it. Without having the hardware it's very hard to do
anything of course, but I'll try to come up with some patches that you
could try and see.
BTW it is enough to add the username to the CC field for it to work, but
in my case, since I'm on the bugs mailing list getting all ticket changes
anyway, it isn't needed to CC me at all.
--
Ticket URL: <http://dev.haiku-os.org/ticket/8085#comment:6>
Haiku <http://dev.haiku-os.org>
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Other related posts:
- » [haiku-bugs] Re: [Haiku] #8085: SMI storm on USB handover on AMD 970/SB950 AMD AM3+ UEFI motherboard (was: Interrupt routing issues on AMD 970/SB950 AMD AM3+ UEFI motherboard) - mmlr
