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If a guest sets very short timeouts, and asks for a timer to be reloaded on timeout, QEMU can go to 100%CPU utilisation and become unresponsive, as it is spending all its time generating timeout interrupts. On real hardware this doesn't matter, as the interrupts are just coalesced, and the effect is to have the interrupt asserted all the time. This patch is a band-aid, that prevents timeouts less than 10 microseconds from being set. 10 microseconds is a limit that was determined empirically on a variety of machines as the shortest that allowed QEMU to pick up a control-a c sequence to get at the monitor. Reported-by: Anna Lyons <anna.lyons@nicta.com.au> Signed-off-by: Peter Chubb <peter.chubb@nicta.com.au> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
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Read the documentation in qemu-doc.html or on http://wiki.qemu.org - QEMU team
Description
Original Xbox Emulator for Windows, macOS, and Linux (Active Development)
Readme
GPL-2.0
710 MiB
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