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Re: [RFC 8/8] x86_64: Support for new UV apic

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To: Yinghai Lu <yhlu.kernel@...>
Cc: Jack Steiner <steiner@...>, Andi Kleen <andi@...>, <tglx@...>, <linux-mm@...>, <linux-kernel@...>
Date: Monday, March 31, 2008 - 8:33 am

* Yinghai Lu <yhlu.kernel@gmail.com> wrote:


yes - and even if it were called more frequently, having generic code 
and having the possibility of an as generic as possible kernel image 
(and kernel rpms) is still a very important feature. In that sense 
subarch support is actively harmful and we are trying to move away from 
that model.

It is very nice that Jack has managed to make UV a generic platform 
instead of a subarch - and i'd encourage all future PC platform 
extensions to work via that model. The status of current PC 
subarchitectures is the following:

 - mach-visws: obsolete. We could drop it today - it's been years since 
                         i saw real VISWS bugreports.

 - mach-voyager: obsolete.

 - mach-es7000: on the way out - latest ES7000's are generic.

 - mach-rdc321x: it's being de-sub-architectured. It's about one patch 
                 away from becoming a non-subarch.

so we are just a few patches and a few well-directed voltage spikes away 
from being able to remove the subarch complication from x86 altogether 
;-)

	Ingo
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Messages in current thread:
[RFC 8/8] x86_64: Support for new UV apic, Jack Steiner, (Mon Mar 24, 2:21 pm)
Re: [RFC 8/8] x86_64: Support for new UV apic, Yinghai Lu, (Sun Mar 30, 4:41 pm)
Re: [RFC 8/8] x86_64: Support for new UV apic, Jack Steiner, (Sun Mar 30, 5:08 pm)
Re: [RFC 8/8] x86_64: Support for new UV apic, Yinghai Lu, (Sun Mar 30, 7:24 pm)
Re: [RFC 8/8] x86_64: Support for new UV apic, Ingo Molnar, (Tue Mar 25, 10:30 am)
Re: [RFC 8/8] x86_64: Support for new UV apic, Jack Steiner, (Tue Mar 25, 12:31 pm)
Re: [RFC 8/8] x86_64: Support for new UV apic, Glauber Costa, (Tue Mar 25, 11:24 pm)
Re: [RFC 8/8] x86_64: Support for new UV apic, Andi Kleen, (Tue Mar 25, 6:25 am)
Re: [RFC 8/8] x86_64: Support for new UV apic, Jack Steiner, (Tue Mar 25, 1:56 pm)
Re: [RFC 8/8] x86_64: Support for new UV apic, Ingo Molnar, (Wed Mar 26, 3:38 am)
Re: [RFC 8/8] x86_64: Support for new UV apic, Yinghai Lu, (Sun Mar 30, 4:23 pm)
Re: [RFC 8/8] x86_64: Support for new UV apic, Jack Steiner, (Sun Mar 30, 5:03 pm)
Re: [RFC 8/8] x86_64: Support for new UV apic, Andi Kleen, (Sun Mar 30, 5:18 pm)
Re: [RFC 8/8] x86_64: Support for new UV apic, Yinghai Lu, (Sun Mar 30, 7:29 pm)
Re: [RFC 8/8] x86_64: Support for new UV apic, Andi Kleen, (Mon Mar 31, 2:48 am)
Re: [RFC 8/8] x86_64: Support for new UV apic, Jack Steiner, (Sun Mar 30, 10:18 pm)
Re: [RFC 8/8] x86_64: Support for new UV apic, Yinghai Lu, (Sun Mar 30, 10:20 pm)
Re: [RFC 8/8] x86_64: Support for new UV apic, Ingo Molnar, (Mon Mar 31, 8:33 am)
Re: [RFC 8/8] x86_64: Support for new UV apic, Yinghai Lu, (Mon Mar 31, 2:42 pm)
Re: [RFC 8/8] x86_64: Support for new UV apic, Andi Kleen, (Mon Mar 31, 8:52 am)
Re: [RFC 8/8] x86_64: Support for new UV apic, Andi Kleen, (Tue Mar 25, 2:06 pm)
Re: [RFC 8/8] x86_64: Support for new UV apic, Jeremy Fitzhardinge, (Tue Mar 25, 10:23 pm)
Re: [RFC 8/8] x86_64: Support for new UV apic, Ingo Molnar, (Wed Mar 26, 3:29 am)
Re: [RFC 8/8] x86_64: Support for new UV apic, Glauber Costa, (Tue Mar 25, 11:22 pm)
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