From: Keir Fraser <keir@xen.org>
To: Lin-Bao Zhang <2004.zhang@gmail.com>
Cc: xen-devel@lists.xensource.com
Subject: Re: xen-kernel and EDD
Date: Thu, 18 Aug 2011 12:04:24 +0100 [thread overview]
Message-ID: <CA72B048.30827%keir@xen.org> (raw)
In-Reply-To: <CANuKePmurLWCEEJVzbQv2hSzccUiE-NHDkuVddgyRyXapb9Znw@mail.gmail.com>
On 18/08/2011 11:43, "Lin-Bao Zhang" <2004.zhang@gmail.com> wrote:
> --
> so in my system , my EBDA area should be 95400 ~ a0000 ,about 43KBytes.
> from xen.gz (hypervisor) code , trampoline.S , we know
> ----
> #define BOOT_TRAMPOLINE 0x90000
> #define bootsym_phys(sym) \
> (((unsigned long)&(sym)-(unsigned long)&trampoline_start)+BOOT_TRAMPOLINE)
> -----
> 0x95400 - 0x90000 = 0x5400 = 21KBytes.
>
> 21Kbytes is enough for gen.gz running(hypervisor) ?
> if hypervisor will run more area , maybe it will overlap EBDA area .
>
> so who can tell me xen.gz 's end address ? or max long ?
It's almost certainly this. In latest Xen we run the trampoline code at
0x7c000. So you can try rebuilding your hypervisor with the following
changes:
1. Change BOOT_TRAMPOLINE to 0x7c000
2. In arch/x86/boot/head.S, change the line 'mov $0x98000,%esp' to 'mov
$0x80000,%esp'.
That will probably fix your problem.
-- Keir
next prev parent reply other threads:[~2011-08-18 11:04 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <CAKdQVUb7s6_1RyMDyCkBZWHdAvDy1yPY4nQarqNbSspi4uHC2w@mail.gmail.com>
2011-08-18 5:08 ` xen-kernel and EDD Lin-Bao Zhang
2011-08-18 6:40 ` Keir Fraser
2011-08-18 10:43 ` Lin-Bao Zhang
2011-08-18 10:52 ` Lin-Bao Zhang
2011-08-18 11:05 ` Keir Fraser
2011-08-18 11:04 ` Keir Fraser [this message]
2011-08-18 15:55 ` Lin-Bao Zhang
2011-08-19 8:27 ` Lin-Bao Zhang
2011-08-19 8:49 ` Keir Fraser
2011-08-19 9:15 ` Lin-Bao Zhang
2011-08-19 9:23 ` Keir Fraser
2011-08-19 9:51 ` Lin-Bao Zhang
2011-08-22 3:45 ` Lin-Bao Zhang
2011-08-23 8:48 ` Paolo Bonzini
2011-08-23 10:24 ` Lin-Bao Zhang
2011-08-24 7:50 ` Lin-Bao Zhang
2011-08-24 8:03 ` Keir Fraser
2011-08-24 9:36 ` BobZhang
2011-08-24 9:49 ` Keir Fraser
2011-08-25 9:37 ` Lin-Bao Zhang
2011-08-25 9:50 ` Lin-Bao Zhang
2011-08-25 10:24 ` Keir Fraser
2011-08-25 14:33 ` Lin-Bao Zhang
2011-08-31 7:50 ` Lin-Bao Zhang
2011-08-31 7:56 ` Keir Fraser
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