[Xen-devel] RE: recreate monitor page table?

To:	"Tim Deegan" <Tim.Deegan@xxxxxxxxxxxxx>
Subject:	[Xen-devel] RE: recreate monitor page table?
From:	"Li, Xin B" <xin.b.li@xxxxxxxxx>
Date:	Thu, 19 Apr 2007 00:02:16 +0800
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Thread-topic:	recreate monitor page table?

>At 23:46 +0800 on 18 Apr (1176940011), Li, Xin B wrote:
>> On x86_64, monitor page table should always be 4 level, and we can
>> uninstall the old shadow linear entry and install new shadow 
>paging mode
>> entry, why even recreate the monitor top level page?
>
>We could have made a routine to adjust the layout of the monitor table
>given the old and new modes, but it would have to understand two modes
>at once, which nothing else in multi.c does.  It would also reproduce 
>code that's already in sh_make_monitor_table and
sh_destroy_monitor_table.
>Since we don't expect it to be worth optimizing this path, we just used
>the existing routines.


Thanks
Quite clear to me now :-)

-Xin

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[Xen-devel] RE: recreate monitor page table?