In comment #14, please disregard the second half of the issue, related
to:
0x0000aaaaaabd4100 <+16>: cbz w1, 0xaaaaaabd4108 <qemu_event_reset+24>
0x0000aaaaaabd4104 <+20>: ret
0x0000aaaaaabd4108 <+24>: ldaxr w1, [x0]
0x0000aaaaaabd410c <+28>: orr w1, w1, #0x1
=> 0x0000aaaaaabd4110 <+32>: stlxr w2, w1, [x0]
0x0000aaaaaabd4114 <+36>: cbnz w2, 0xaaaaaabd4108
Duh! This is just a regular load/xor/store logic for atomic_or() inside
qemu_event_reset().
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https://bugs.launchpad.net/bugs/1805256
Title:
qemu-img hangs on rcu_call_ready_event logic in Aarch64 when
converting images
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