From: "Stanislav" <stlintel@gmail.com>
To: 'Glauber Costa' <glommer@redhat.com>,
'Jan Kiszka' <jan.kiszka@siemens.com>
Cc: 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 20:29:23 +0300 [thread overview]
Message-ID: <000001c9ce70$3416d3a0$9c447ae0$@com> (raw)
In-Reply-To: <20090506155141.GE26401@poweredge.glommer>
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.
Stanislav
> Without doing my homework:
> What impact will it have on an emulated CPUs without [L]APIC? I'm
> thinking of -M isapc e.g.
>I tried, and it still boots fine.
>The flag just indicates it supports an apic, not that it has one.
next prev parent reply other threads:[~2009-05-06 17:29 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 [this message]
2009-05-06 17:41 ` Glauber Costa
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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