From: Yinghai Lu <yinghai@kernel.org>
To: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>,
"ananth@in.ibm.com" <ananth@in.ibm.com>,
Ingo Molnar <mingo@elte.hu>, Thomas Gleixner <tglx@linutronix.de>,
"H. Peter Anvin" <hpa@zytor.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH 3/4] x86: using logical flat for amd cpu too.
Date: Tue, 12 Jan 2010 00:47:03 -0800 [thread overview]
Message-ID: <86802c441001120047v5c303dfdh648ad8ebf2f538c1@mail.gmail.com> (raw)
In-Reply-To: <alpine.LFD.2.00.1001111913570.17145@localhost.localdomain>
On Mon, Jan 11, 2010 at 7:16 PM, Linus Torvalds
<torvalds@linux-foundation.org> wrote:
>
>
> On Mon, 11 Jan 2010, Yinghai Lu wrote:
>>
>> tested that amd support logical flat too when cpus num <= 8 and even
>> bsp apic id > 8
>>
>> so could remove vendor check...
>
> At least this one makes code simpler.
>
> What was the background for thinking that AMD didn't support the same APIC
> addressing models? If there really is some issue external to the CPU's
> themselves, whatever problem was attributed to AMD might be the same (or
> similar) problem that Ananth had.
not sure.
i remembered that bios fix one apic dest apic id in ioapic register.
before that that field
is set to 0 always.
YH
next prev parent reply other threads:[~2010-01-12 8:47 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-01-12 2:48 [RFC PATCH 1/4] use nr_cpus= to set nr_cpu_ids early Yinghai Lu
2010-01-12 2:48 ` [RFC PATCH 3/4] x86: using logical flat for amd cpu too Yinghai Lu
2010-01-12 3:16 ` Linus Torvalds
2010-01-12 8:47 ` Yinghai Lu [this message]
2010-01-12 8:27 ` Ananth N Mavinakayanahalli
2010-01-12 22:50 ` H. Peter Anvin
2010-01-13 4:53 ` Ananth N Mavinakayanahalli
2010-01-12 2:48 ` [RFC PATCH 4/4] x86: according to nr_cpu_ids to decide if need to leave logical flat Yinghai Lu
2010-01-12 3:20 ` Linus Torvalds
2010-01-12 8:50 ` Yinghai Lu
2010-01-12 2:48 ` [RFC PATCH 2/4] x86: use dmi check to treat disabled cpus as hotplug cpus Yinghai Lu
2010-01-12 3:13 ` Linus Torvalds
2010-01-12 8:59 ` Yinghai Lu
2010-01-12 15:19 ` Linus Torvalds
2010-01-12 17:54 ` Suresh Siddha
2010-01-12 18:13 ` Yinghai Lu
2010-01-12 18:24 ` Suresh Siddha
2010-01-12 19:19 ` Yinghai Lu
2010-01-12 9:15 ` Yinghai Lu
2010-01-12 9:46 ` Ingo Molnar
2010-01-12 16:14 ` Valdis.Kletnieks
2010-01-12 16:26 ` Linus Torvalds
2010-01-12 17:17 ` Valdis.Kletnieks
2010-01-12 3:06 ` [RFC PATCH 1/4] use nr_cpus= to set nr_cpu_ids early Linus Torvalds
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