From: ebiederm@xmission.com (Eric W. Biederman)
To: vgoyal@in.ibm.com
Cc: Andrew Morton <akpm@osdl.org>,
fastboot@osdl.org, linux-kernel@vger.kernel.org
Subject: Re: [Fastboot] [PATCH] i386: move apic init in init_IRQs
Date: Mon, 24 Oct 2005 09:36:52 -0600 [thread overview]
Message-ID: <m1u0f7c4ff.fsf@ebiederm.dsl.xmission.com> (raw)
In-Reply-To: <20051024130311.GA5853@in.ibm.com> (Vivek Goyal's message of "Mon, 24 Oct 2005 18:33:11 +0530")
Vivek Goyal <vgoyal@in.ibm.com> writes:
> You are right. hard_smp_processor_id() is hard-coded to zero in case of a
> non SMP kernel (include/linux/smp.h) and that's why the problem is happening.
> I am booting a non-SMP capture kernel. In case of kexec on panic, we can very
> well boot on a cpu whose id is not zero.
>
> I have attached a patch with the mail which is now using
> boot_cpu_physical_apicid to hard set presence of boot cpu instead of
> hard_smp_processor_id(). But the interesting questoin remains why BIOS is
> not reporting the boot cpu.
Ok this looks good. But it raises a couple of followup questions.
- Are there other places that use hard_smp_processor_id in
in a uniprocessor kernel?
- Does x86_64 have this same problem?
Anyway it looks like we have this working which is a big step forward
in having a reliable kdump mechanism.
Eric
next prev parent reply other threads:[~2005-10-24 15:37 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-10-04 15:04 Eric W. Biederman
2005-10-04 15:34 ` Maciej W. Rozycki
2005-10-04 15:48 ` Eric W. Biederman
2005-10-04 17:16 ` Maciej W. Rozycki
2005-10-05 18:30 ` [PATCH] i386 apic: Fix mispelling of APIC Eric W. Biederman
2005-10-21 13:33 ` [Fastboot] [PATCH] i386: move apic init in init_IRQs Vivek Goyal
2005-10-21 14:45 ` Eric W. Biederman
2005-10-21 16:53 ` Albert Herranz
2005-10-21 18:01 ` Eric W. Biederman
2005-10-22 14:52 ` Vivek Goyal
2005-10-22 15:23 ` Eric W. Biederman
2005-10-24 13:03 ` Vivek Goyal
2005-10-24 15:36 ` Eric W. Biederman [this message]
2005-10-25 7:17 ` Eric W. Biederman
2005-10-25 7:47 ` [PATCH] i386 mpparse: Only ignore lapic information we can't store Eric W. Biederman
2005-10-25 9:42 ` Vivek Goyal
2005-10-31 17:04 [Fastboot] [PATCH] i386: move apic init in init_IRQs Protasevich, Natalie
2005-10-31 17:18 ` Zwane Mwaikambo
2005-10-31 17:30 ` Eric W. Biederman
2005-10-31 20:26 ` Zwane Mwaikambo
2005-10-31 18:18 ` Eric W. Biederman
2005-10-31 18:31 Protasevich, Natalie
2005-11-01 7:41 ` Eric W. Biederman
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