Problems with hypercalls

emilie lefebvre tricheurs at
Tue Jun 7 04:39:25 EDT 2011

 Hi all,

I try to do hypercalls but I always have a kernel panic that I don't understand.
I have Scentific Linux 6 installed on  kvm and my computer has ubuntu.
I try to modify the SL6 kernel to do hypercalls.
I have a function in that kernel which check all syscalls in the VM.

When I put the hypercall at the beginning of this function, it perfectly works,
but when I try to put it in the middle of the function I have a kernel panic with this

"divide error: 0000 [#1] SMP 
 [<ffffffff813f8cdd>] panic+0x78/0x137
 [<ffffffff813fcb94>] oops_end+0xe4/0x100
 [<ffffffff8101021b>] die+0x5b/0x90
 [<ffffffff813fc444>] do_trap+0xc4/0x160
 [<ffffffff8100df2f>] do_divide_error+0x8f/0xb0
 [<ffffffff811f974c>] ? my_function+0xdc/0xe70 "

Could you have any suggestions ?

With regards,

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