From: "H. Peter Anvin" <hpa@zytor.com>
To: Avi Kivity <avi@qumranet.com>
Cc: "Yang, Sheng" <sheng.yang@intel.com>, kvm@vger.kernel.org
Subject: Re: [PATCH] kvm: bios: Put AP boot up code to 0x1000
Date: Fri, 01 Aug 2008 08:49:14 -0700 [thread overview]
Message-ID: <4893307A.5000605@zytor.com> (raw)
In-Reply-To: <489189E0.8070804@qumranet.com>
Avi Kivity wrote:
>
> IIRC the rombios32.c writes to the memory it is in, so it expects RAM,
> not ROM.
>
> kvm doesn't support ROM, so it would work. Qemu doesn't, so it would fail.
>
You can specify either RAM or ROM in Qemu, but you have to edit the C code.
If you need RAM in the low 640K, your choices are roughly 0x300..0x340
or in the EBDA.
-hpa
next prev parent reply other threads:[~2008-08-01 15:49 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 [this message]
2008-07-31 21:15 ` Sebastian Herbszt
2008-08-01 1:19 ` Yang, Sheng
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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