From: Glauber Costa <glommer@redhat.com>
To: Stanislav <stlintel@gmail.com>
Cc: 'Jan Kiszka' <jan.kiszka@siemens.com>,
aliguori@us.ibm.com, qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] Re: [PATCH 2/4] move CPUID_APIC flag to where it belongs
Date: Wed, 6 May 2009 14:41:36 -0300 [thread overview]
Message-ID: <20090506174136.GG26401@poweredge.glommer> (raw)
In-Reply-To: <000001c9ce70$3416d3a0$9c447ae0$@com>
On Wed, May 06, 2009 at 08:29:23PM +0300, Stanislav wrote:
> If OS boot fine its more luck. The flag indicates presence of local apic,
> not "if it is supported".
> For example when lapic is globally disabled (i.e. not present) CPUID flag is
> cleared off as well.
> But CPU is still supports lapic, after reset it will be back.
What if we take out a cpu that supports lapic, and is connected to an apic system,
and connects it to a board that has no apic?
Also, note that in the old code, it was set regardless of the existance of an APIC
anyway. The only dependancy was on smp_cpus > 1.
next prev parent reply other threads:[~2009-05-06 17:36 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-05-06 14:49 [Qemu-devel] [PATCH 0/4] Simplify cpu initialization Glauber Costa
2009-05-06 14:49 ` [Qemu-devel] [PATCH 1/4] move registering of cpu_reset to inside cpu_init Glauber Costa
2009-05-06 14:49 ` [Qemu-devel] [PATCH 2/4] move CPUID_APIC flag to where it belongs Glauber Costa
2009-05-06 14:49 ` [Qemu-devel] [PATCH 3/4] move halted state setting to inside of cpu_x86_init Glauber Costa
2009-05-06 14:49 ` [Qemu-devel] [PATCH 4/4] move apic functions to a separate apic.h header Glauber Costa
2009-05-06 15:52 ` [Qemu-devel] " Jan Kiszka
2009-05-06 16:08 ` Glauber Costa
2009-05-06 15:45 ` [Qemu-devel] Re: [PATCH 3/4] move halted state setting to inside of cpu_x86_init Jan Kiszka
2009-05-06 19:31 ` [Qemu-devel] " Blue Swirl
2009-05-06 21:42 ` Glauber Costa
2009-05-06 15:40 ` [Qemu-devel] Re: [PATCH 2/4] move CPUID_APIC flag to where it belongs Jan Kiszka
2009-05-06 15:51 ` Glauber Costa
2009-05-06 17:29 ` Stanislav
2009-05-06 17:41 ` Glauber Costa [this message]
2009-05-06 17:43 ` Stanislav
2009-05-06 18:17 ` Anthony Liguori
2009-05-06 17:02 ` [Qemu-devel] Re: [PATCH 1/4] move registering of cpu_reset to inside cpu_init Jan Kiszka
2009-05-06 19:36 ` [Qemu-devel] " Blue Swirl
2009-05-06 21:45 ` Glauber Costa
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