I've successfully add a new physical page to guest and trying to use it as the virtualization exception (#VE) infomation page. However, the function: xc_altp2m_set_vcpu_enable_notify(xci, domid, vcpuid, gfn) failed for unknown reason (return -1). The only related info I can get is by `dmesg`:
[605716.546390] vmfunc[16835]: segfault at 0 ip 00000000004009fb sp > 00007fff3a7b87a0 error 4 in vmfunc[400000+1000] > [605781.162125] vmfunc[16840]: segfault at 0 ip 00000000004009fb sp > 00007fffd84c86d0 error 4 in vmfunc[400000+1000] > [606113.290934] vmfunc[16860]: segfault at 0 ip 00000000004009fb sp > 00007fffaa076fb0 error 4 in vmfunc[400000+1000]
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