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Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapping and x2apic support

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From: Yinghai Lu <yhlu.kernel@...>
To: Suresh Siddha <suresh.b.siddha@...>
Cc: Ingo Molnar <mingo@...>, hpa@zytor.com <hpa@...>, tglx@linutronix.de <tglx@...>, akpm@linux-foundation.org <akpm@...>, arjan@linux.intel.com <arjan@...>, andi@firstfloor.org <andi@...>, ebiederm@xmission.com <ebiederm@...>, jbarnes@virtuousgeek.org <jbarnes@...>, steiner@sgi.com <steiner@...>, linux-kernel@vger.kernel.org <linux-kernel@...>, jeremy@goop.org <jeremy@...>
Subject: Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapping and x2apic support
Date: Friday, July 11, 2008 - 11:16 pm

1. wonder if x2apic can be use with uniprocessor.

in APIC_init_uniprocessor, it will try to enable x2apic, but later

apic_write(APIC_ID, SET_APIC_ID(boot_cpu_physical_apicid));

but SET_APIC_ID is still for xapic version. so need to GET_APIC_ID,
SET_APIC_ID for different
genapic like 32bit.

2 check_x2apic is called in setup_arch, but it only set apic_ops,
and genapic still not changed, aka apic_flat...
wonder if you need to call setup_apic_routing to set genapic.

otherwise read_apic_id could have use the one from apic_flat....need
to shift......

3.or move read_apic_id to apic_ops intead...together with GET_APIC_ID too.
but 32bit version seems like to put GET_APIC_ID with genapic...

which one is better? 2 or 3

YH
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Messages in current thread:
[patch 00/26] x64, x2apic/intr-remap: Interrupt-remapping an..., Suresh Siddha, (Thu Jul 10, 2:16 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Eric W. Biederman, (Thu Jul 10, 4:05 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Arjan van de Ven, (Thu Jul 10, 6:09 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Eric W. Biederman, (Thu Jul 10, 6:54 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Suresh Siddha, (Thu Jul 10, 5:15 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Eric W. Biederman, (Thu Jul 10, 6:52 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Suresh Siddha, (Thu Jul 10, 10:35 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Eric W. Biederman, (Thu Jul 10, 11:15 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Ingo Molnar, (Thu Jul 10, 4:18 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Eric W. Biederman, (Thu Jul 10, 5:07 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Ingo Molnar, (Thu Jul 10, 3:53 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Andrew Morton, (Tue Jul 22, 4:49 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Mike Travis, (Tue Jul 22, 5:00 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Ingo Molnar, (Thu Jul 24, 1:03 am)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Andrew Morton, (Tue Jul 22, 5:14 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Yong Wang, (Wed Jul 16, 10:37 am)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Ingo Molnar, (Wed Jul 16, 10:53 am)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Suresh Siddha, (Thu Jul 10, 5:56 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Ingo Molnar, (Fri Jul 11, 6:28 am)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Ingo Molnar, (Fri Jul 11, 4:09 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Suresh Siddha, (Fri Jul 11, 4:31 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Ingo Molnar, (Fri Jul 11, 4:49 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Yinghai Lu, (Fri Jul 11, 4:42 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Ingo Molnar, (Fri Jul 11, 4:45 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Suresh Siddha, (Fri Jul 11, 5:24 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Yinghai Lu, (Fri Jul 11, 6:02 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Ingo Molnar, (Sat Jul 12, 1:37 am)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Yinghai Lu, (Sat Jul 12, 2:06 am)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Ingo Molnar, (Sat Jul 12, 2:45 am)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Yinghai Lu, (Fri Jul 11, 11:16 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Suresh Siddha, (Sat Jul 12, 8:55 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Eric W. Biederman, (Fri Jul 11, 11:52 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Yinghai Lu, (Sat Jul 12, 2:17 am)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Suresh Siddha, (Sat Jul 12, 9:00 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Eric W. Biederman, (Sat Jul 12, 3:02 am)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Suresh Siddha, (Sat Jul 12, 9:32 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Yinghai Lu, (Sat Jul 12, 3:49 am)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Suresh Siddha, (Sat Jul 12, 9:01 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Eric W. Biederman, (Sat Jul 12, 4:11 am)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Yinghai Lu, (Sat Jul 12, 4:37 am)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Suresh Siddha, (Sat Jul 12, 9:02 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Eric W. Biederman, (Sat Jul 12, 5:46 am)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remappin..., Suresh Siddha, (Thu Jul 10, 4:22 pm)