[haiku-bugs] Re: [Haiku] #7692: Haiku Crashes in Qemu with Pentium 1, 2 or 3 CPU models
- From: "mmlr" <trac@xxxxxxxxxxxx>
- Date: Wed, 15 Jun 2011 18:49:01 -0000
#7692: Haiku Crashes in Qemu with Pentium 1, 2 or 3 CPU models
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Reporter: tonestone57 | Owner: mmlr
Type: bug | Status: assigned
Priority: normal | Milestone: R1
Component: System/Kernel | Version: R1/Development
Resolution: | Keywords:
Blocked By: | Blocking: 7665
Has a Patch: 0 | Platform: x86
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Changes (by mmlr):
* status: new => assigned
* owner: axeld => mmlr
Comment:
The reason is rather simple: QEMU just unsets the APIC support bit in the
CPU ID features but still emulates the actual APIC and IO-APIC hardware.
Also the ACPI tables still include the full APIC info, which I'd classify
as a QEMU bug (since it describes local APICs that wouldn't actually be
present on the CPU if it didn't support local APICs). In any case, the
local APIC init (or enumeration) should check the CPU features for the
APIC feature before moving on. I'll look into that.
--
Ticket URL: <http://dev.haiku-os.org/ticket/7692#comment:3>
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