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

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From: Suresh Siddha
Subject: Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapping and x2apic support
Date: Saturday, July 12, 2008 - 6:00 pm

On Fri, Jul 11, 2008 at 11:17:02PM -0700, Yinghai Lu wrote:

We are updating the spec with more clarifications. But in short,
intr-remapping needs to be enabled prior to enabling x2apic in the CPU.

physical mode might work for < 255 id's for some. But it is HW
implementation specific and might not work from generation to generation.
chipsets or cpu's may drop the interrupts if cpu and chipset are
in different modes (one in legacy mode and another in extended).

So Intel is recommending to enable Intr-remapping before enabling x2apic.

thanks,
suresh
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Messages in current thread:
[patch 00/26] x64, x2apic/intr-remap: Interrupt-remapping ..., Suresh Siddha, (Thu Jul 10, 11:16 am)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Ingo Molnar, (Thu Jul 10, 12:53 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Eric W. Biederman, (Thu Jul 10, 1:05 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Ingo Molnar, (Thu Jul 10, 1:18 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Suresh Siddha, (Thu Jul 10, 1:22 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Eric W. Biederman, (Thu Jul 10, 2:07 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Suresh Siddha, (Thu Jul 10, 2:15 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Suresh Siddha, (Thu Jul 10, 2:56 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Arjan van de Ven, (Thu Jul 10, 3:09 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Eric W. Biederman, (Thu Jul 10, 3:52 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Eric W. Biederman, (Thu Jul 10, 3:54 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Suresh Siddha, (Thu Jul 10, 7:35 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Eric W. Biederman, (Thu Jul 10, 8:15 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Ingo Molnar, (Fri Jul 11, 3:28 am)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Ingo Molnar, (Fri Jul 11, 1:09 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Suresh Siddha, (Fri Jul 11, 1:31 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Yinghai Lu, (Fri Jul 11, 1:42 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Ingo Molnar, (Fri Jul 11, 1:45 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Ingo Molnar, (Fri Jul 11, 1:49 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Suresh Siddha, (Fri Jul 11, 2:24 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Yinghai Lu, (Fri Jul 11, 3:02 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Yinghai Lu, (Fri Jul 11, 8:16 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Eric W. Biederman, (Fri Jul 11, 8:52 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Ingo Molnar, (Fri Jul 11, 10:37 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Yinghai Lu, (Fri Jul 11, 11:06 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Yinghai Lu, (Fri Jul 11, 11:17 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Ingo Molnar, (Fri Jul 11, 11:45 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Eric W. Biederman, (Sat Jul 12, 12:02 am)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Yinghai Lu, (Sat Jul 12, 12:49 am)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Eric W. Biederman, (Sat Jul 12, 1:11 am)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Yinghai Lu, (Sat Jul 12, 1:37 am)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Eric W. Biederman, (Sat Jul 12, 2:46 am)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Suresh Siddha, (Sat Jul 12, 5:55 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Suresh Siddha, (Sat Jul 12, 6:00 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Suresh Siddha, (Sat Jul 12, 6:01 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Suresh Siddha, (Sat Jul 12, 6:02 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Suresh Siddha, (Sat Jul 12, 6:32 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Yong Wang, (Wed Jul 16, 7:37 am)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Ingo Molnar, (Wed Jul 16, 7:53 am)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Andrew Morton, (Tue Jul 22, 1:49 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Mike Travis, (Tue Jul 22, 2:00 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Andrew Morton, (Tue Jul 22, 2:14 pm)
Re: [patch 00/26] x64, x2apic/intr-remap: Interrupt-remapp ..., Ingo Molnar, (Wed Jul 23, 10:03 pm)