[Xen-devel] How to intercept supervisor call using Xen?

[harry S <harry2845@xxxxxxxxx>]

After reading the document of ARM, I set HCR.TGE to 1 at the init time.Â

  WRITE_SYSREG(HCR_TGE|HCR_PTW|HCR_BSU_OUTER|HCR_AMO|HCR_IMO|HCR_VM|HCR_TWI|HCR_TSC|Â
        ÂHCR_TAC, HCR_EL2);Â

And I add a case in the function do_trap_hyperviosr.Â

But after modifying, there will be a kernel panic when I execute Xen.Â

[ Â Â7.866384] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000bÂ
[ Â Â7.866384]Â
[ Â Â7.881866] CPU: 0 PID: 1 Comm: init Not tainted 3.15.0-rc5+ #91Â
[ Â Â7.891024] [<80017dc4>] (unwind_backtrace) from [<800138f8>] (show_stack+0x20/0x24)Â
[ Â Â7.903640] [<800138f8>] (show_stack) from [<807864a4>] (dump_stack+0x70/0xc0)Â
[ Â Â7.915213] [<807864a4>] (dump_stack) from [<80781030>] (panic+0x9c/0x204)Â
[ Â Â7.926088] [<80781030>] (panic) from [<8002c900>] (do_exit+0x86c/0x9f0)Â
[ Â Â7.936615] [<8002c900>] (do_exit) from [<8002cbc0>] (do_group_exit+0x4c/0xcc)Â
[ Â Â7.948188] [<8002cbc0>] (do_group_exit) from [<8003b5dc>] (get_signal_to_deliver+0x37c/0x71c)Â
[ Â Â7.962535] [<8003b5dc>] (get_signal_to_deliver) from [<80780aec>] (do_signal+0xb4/0x380)Â
[ Â Â7.976013] [<80780aec>] (do_signal) from [<800131a8>] (do_work_pending+0x8c/0xe0)Â
[ Â Â7.988278] [<800131a8>] (do_work_pending) from [<8000f680>] (work_pending+0xc/0x20)Â
[ Â Â8.000901] ---[ end Kernel panic - not syncing: Attempted to kill init! exitcode=0x0000000bÂ
[ Â Â8.000901]Â

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxx
http://lists.xen.org/xen-devel