[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

RE: [Xen-devel] [PATCH]HVM E820 Table cleanup

>> We found E820 table miss report the ACPI NVS/Data information which
>> trigger the Windows HCT test complain, attached please review for the
>> cleanup patch.
>> Signed-off-by: Xin Li <xin.b.li@xxxxxxxxx>
>> Signed-off-by: Winston Wang <winston.l.wang@xxxxxxxxx>
>Apart from adding a page-size ACPI region in low memory, this patch
>*removes* thirteen pages from the top of memory. Was that 
>region just bogus?

Yes, it's bogus :-(

>The hvmloader code which copies the ACPI tables only checks 
>that the tables
>will fit into 0xEA000-0xEFFFF. Shouldn't e820 declare a region 
>of that size,
>therefore (i.e., 0x50000, not 0x10000)?

According to ACPI spec, OS may use e820 ACPI_DATA region as RAM after OS
boots up (but acturally Linux doesn't use it).
But for memory ACPI tables reside, OS can not use like that.

Xen-devel mailing list



Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.