http://bugzilla.kernel.org/show_bug.cgi?id=1641
[EMAIL PROTECTED] changed:
What |Removed |Added
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Attachment #12269|0 |1
is obsolete| |
------- Comment #14 from [EMAIL PROTECTED] 2007-08-06 04:35 -------
Created an attachment (id=12270)
--> (http://bugzilla.kernel.org/attachment.cgi?id=12270&action=view)
disable ioapic when parsing nosmp
That maxcpus is zero means that the system will disable ioapic and only
use one processor. When nosmp is declared in the command-line the system
will skip setup_io_apic and the secondary 8259 interrupt controller can't be
configured correctly. Unfortunately some external interrupt sources are
connected with the secondary 8259 controller. So the system will report the
loss of interrupt, for example IDE controller.
The proposed solution is that the system should disable ioapic by setting
skip_ioapic_setup to one when parsing nosmp. And it is noted that the flag of
skip_ioapic_setup should be set before parsing the configuration of Local and
IO apic.
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