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2013 Mar 12
14
vpmu=1 and running 'perf top' within a PVHVM guest eventually hangs dom0 and hypervisor has stuck vCPUS. Romley-EP (model=45, stepping=2)
...00000305000 0000000000000005 (XEN) 0000000000000010 00007fca88236597 000000000000e033 0000000000000202 (XEN) 00007fff297d9368 000000000000e02b (XEN) (XEN) *** Dumping CPU3 host state: *** (XEN) ----[ Xen-4.3-unstable x86_64 debug=y Not tainted ]---- (XEN) CPU: 3 (XEN) RIP: e008:[<ffff82c4c01a365e>] mwait_idle+0x2bb/0x31c (XEN) RFLAGS: 0000000000000246 CONTEXT: hypervisor (XEN) rax: 0000000000000010 rbx: 000000703cd99b2b rcx: 20c49ba5e353f7cf (XEN) rdx: ffff83043ffc0020 rsi: 000000703cd99b2b rdi: ffff83043ffd0a38 (XEN) rbp: ffff83043c9b7ee0 rsp: ffff83043c9b7e60 r8: 000000...