From: "Yang, Sheng" <sheng.yang@intel.com>
To: "Sebastian Herbszt" <herbszt@gmx.de>
Cc: "Avi Kivity" <avi@qumranet.com>, kvm@vger.kernel.org
Subject: Re: [PATCH] kvm: bios: Put AP boot up code to 0x1000
Date: Fri, 1 Aug 2008 09:19:00 +0800 [thread overview]
Message-ID: <200808010919.00663.sheng.yang@intel.com> (raw)
In-Reply-To: <034601c8f352$b6e073d0$0201a8c0@zeug>
On Friday 01 August 2008 05:15:11 Sebastian Herbszt wrote:
> Yang, Sheng wrote:
> > Rather than 0x10000, which can be overrided by userspace program
> > like grub.
>
> Could you please explain this problem?
> If i don't misunderstand this smp_ap_boot_code_start from
> rombios32start.S gets copied to AP_BOOT_CODE and then there is a
> broadcast INIT and SIPI. After the code is run it's not used
> anymore so there should be no need to care where it's located.
>
> - Sebastian
Hi Sebastian
Please refer to my another patch comment. Basicly, AP is running HLT
in 0x10038, but it can exit due to some reason, here QEmu want to
raise it up . But after AP exit from HLT, it can't return to it
because the code was overrided by grub and no HLT loop there. Then AP
had gone away...
--
regards
Yang, Sheng
next prev parent reply other threads:[~2008-08-01 1:17 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-31 2:43 [PATCH] kvm: bios: Put AP boot up code to 0x1000 Yang, Sheng
2008-07-31 6:00 ` Yang, Sheng
2008-07-31 6:41 ` Avi Kivity
2008-07-31 9:09 ` Yang, Sheng
2008-07-31 9:46 ` Avi Kivity
2008-08-01 15:49 ` H. Peter Anvin
2008-07-31 21:15 ` Sebastian Herbszt
2008-08-01 1:19 ` Yang, Sheng [this message]
2008-08-02 19:30 ` Sebastian Herbszt
2008-08-05 8:14 ` Yang, Sheng
2008-08-06 21:56 ` Sebastian Herbszt
2008-08-10 7:50 ` Avi Kivity
2008-08-13 23:00 ` Sebastian Herbszt
2008-08-14 6:08 ` Avi Kivity
2008-08-17 22:35 ` [PATCH] kvm: bios: end AP boot code execution in rombios Sebastian Herbszt
2008-08-18 2:33 ` Anthony Liguori
2008-08-18 2:45 ` Yang, Sheng
2008-08-18 10:21 ` Avi Kivity
2008-08-18 10:22 ` Avi Kivity
2008-08-19 23:06 ` Sebastian Herbszt
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