Re: [Xen-devel] weird memory access problem running on dom0

[Alice Wan <wanjia19870902@xxxxxxxxx>]

yeah, at last we found it's specific to glibc memset implementation, which is optimized with sse instructions.

the detail reason is as following

http://lists.xenproject.org/archives/html/xen-devel/2013-11/msg00600.html

thank you all for any advices.

regards,

wanjia

2013/10/31 George Dunlap <George.Dunlap@xxxxxxxxxxxxx>

On Wed, Oct 23, 2013 at 5:36 AM, Alice Wan <wanjia19870902@xxxxxxxxx> wrote:
> well, no balloon, command line has dom0_mem=
>
> no any useful dmesg, xm dmesg
>
> kernel haven't config DEBUG
>
> and maybe if we open DEBUG, this problem can't be reproduced.
>
> has any ideas about pte_flags ?
>
> some info about mtrr
>
> reg00: base=0x0ffc00000 ( 4092MB), size=    4MB, count=1: write-protect
> reg01: base=0x080000000 ( 2048MB), size= 1024MB, count=1: uncachable
> reg02: base=0x0c0000000 ( 3072MB), size=  512MB, count=1: uncachable
> reg03: base=0x0e0000000 ( 3584MB), size=  256MB, count=1: uncachable
> reg04: base=0x0f0000000 ( 3840MB), size=  128MB, count=1: uncachable
> reg05: base=0x0f8000000 ( 3968MB), size=   64MB, count=1: uncachable
> reg06: base=0x0fc000000 ( 4032MB), size=   32MB, count=1: uncachable
> reg07: base=0x0fec00000 ( 4076MB), size=    4MB, count=1: uncachable

Any updates on this?

 -George

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