[Xen-devel] [PATCH] paging disabled handling for gdbserver-xen

["Kamble, Nitin A" <nitin.a.kamble@xxxxxxxxx>]

Hi Keir, Ian,

   The current ptrace code is traversing the page table structures to guest guest physical address, even when the guest paging is disabled. The gdbserver-xen tries to access guest pdes & ptes to map memory of  hvm guest being debugged; and it gets a seg-fault because guest has not setup it’s paging yet. The attached patch adds guest paging state check, so that the map_domain_va() can get the correct guest physical address from guest va. Please apply.

 

Signed-Off-By: Nitin A Kamble <nitin.a.kamble@xxxxxxxxx>

 

 xc_ptrace.c |   58 +++++++++++++++++++++++++++++++---------------------------

 1 files changed, 31 insertions(+), 27 deletions(-)

 

Thanks & Regards,

Nitin

-----------------------------------------------------------------------------------

Open Source Technology Center, Intel Corp

 

Attachment: gdbserver_paging_disabled.patch
Description: gdbserver_paging_disabled.patch

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