Re: [Xen-devel] [PATCH V4 3/3] x86/altp2m: fix display frozen when switching to a new view early

[Razvan Cojocaru <rcojocaru@xxxxxxxxxxxxxxx>]

On 11/9/18 4:19 PM, Razvan Cojocaru wrote:
> (XEN) Xen call trace:
> (XEN)    [<ffff82d080239107>] vcpu_sleep_sync+0x40/0x71
> (XEN)    [<ffff82d0802070f1>] domain.c#do_domain_pause+0x33/0x4f
> (XEN)    [<ffff82d0802084bd>] domain_pause+0x25/0x27
> (XEN)    [<ffff82d08036861e>] hap_track_dirty_vram+0x2b3/0x491
> (XEN)    [<ffff82d0802ee217>] dm.c#dm_op+0x472/0xd46
> (XEN)    [<ffff82d0802eec73>] do_dm_op+0x84/0xba
> (XEN)    [<ffff82d080373722>] pv_hypercall+0x1af/0x4cd
> (XEN)    [<ffff82d08037a422>] lstar_enter+0x112/0x120
> (XEN)
> (XEN) CPU1 @ e008:ffff82d0802a853f
> (time.c#time_calibration_std_rendezvous+0x62/0x77)
> (XEN) CPU2 @ e008:ffff82d0802a853f
> (time.c#time_calibration_std_rendezvous+0x62/0x77)
> (XEN) CPU0 @ e008:ffff82d0802a8514
> (time.c#time_calibration_std_rendezvous+0x37/0x77)
> (XEN)
> (XEN) ****************************************
> (XEN) Panic on CPU 3:
> (XEN) FATAL TRAP: vector = 2 (nmi)
> (XEN) [error_code=0000]
> (XEN) ****************************************

I also have a:

(XEN) Xen call trace:
(XEN)    [<ffff82d0802a7ab8>] time.c#timer_interrupt+0xda/0x11e
(XEN)    [<ffff82d080285755>] do_IRQ+0x5b5/0x65d
(XEN)    [<ffff82d08037a8aa>] common_interrupt+0x10a/0x120
(XEN)    [<ffff82d08022ad80>] queue_write_lock_slowpath+0x50/0x80
(XEN)    [<ffff82d08022adf7>] _percpu_write_lock+0x47/0x13a
(XEN)    [<ffff82d08033de26>] ept_handle_misconfig+0xcb/0x270
(XEN)    [<ffff82d0803226a7>] vmx_vmexit_handler+0x17e1/0x1b91
(XEN)    [<ffff82d0803277fa>] vmx_asm_vmexit_handler+0xfa/0x270
(XEN)
(XEN) CPU1 @ e008:ffff82d080239113 (vcpu_sleep_sync+0x4c/0x71)
(XEN) CPU3 @ e008:ffff82d0802dcb10 (mwait_idle_with_hints+0xed/0x133)
(XEN) CPU2 @ e008:ffff82d0802dcb10 (mwait_idle_with_hints+0xed/0x133)

(ept_handle_misconfig() is waiting to take a lock on the active p2m).


Thanks,
Razvan

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