forked from Minki/linux
2ce316f0b9
2. External interrupt fixes 2.1. Some interrupt conditions like cpu timer or clock comparator stay pending even after the interrupt is injected. If the external new PSW is enabled for interrupts this will result in an endless loop. Usually this indicates a programming error in the guest OS. Lets detect such situations and go to userspace. We will provide a QEMU patch that sets the guest in panicked/crashed state to avoid wasting CPU cycles. 2.2 Resend external interrupts back to the guest if the HW could not do it. - -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iQIcBAABAgAGBQJTaOGKAAoJEBF7vIC1phx8IqkP/0zQ3gWbYdGV20UEvIB+oHsO u7OysZdyfXS3wx6rysTWepQJ6rtWJ/yQSyzTt+RnCTYxUnyhMVPKMJOmoztyhkD5 37I9ricqMS/Ob5A3pKGEW2p/TojPYL5o8svCRt+UWbyxz05AQiCEPteeD7MrcOK+ ASULR2z2h95EYfrMhZSeFjFoXHrPfeMoR5OVESP8gef7uGTlqIZO1mZ6QkAFqL/b VtqCI74oTc+XpNj7jxnvxznilqnvjD31oaci2oK+AX+DQcwOnTIGuUlU1bS+XOwm WFbDKUbksNC/QQ2hPqcCvZTtK+U7XlPZz7pRyEdvHYRckaNDzLbiLzYHvRGgCHoq uy9u429L1pthoj1vQvUY2ZD4HyI4K/UusApie5x3hmYlePNSEcC7TNDt2SvdjrID yX6X9zWC9ffHSmKLBI11PWNs5R1EUrUlBcZ7CFDDmJDCeKRmwmY1+nuYSm7x80iB ctfpXTJG4Ajrbbki5LCdoLPU0piR/IkSEwxeEY0u/5XLcdEiY/Z3SEJzlWeuIPf6 bNuWQK8YP6ane8p3Vc/UwmtMgaCEsnAwYrcRfmjOEQfVDxmRzHARIxbIFs0EsM54 S+6SH6LN1HCeFsG3zvpwPrm9gK2GojvJ0tCwZ78UZZx5m4CrgtHVHHfbspygftv8 6L/YJ/Q0PQja0s3lx/Eh =R95o -----END PGP SIGNATURE----- Merge tag 'kvm-s390-20140506' of git://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into kvm-next 1. Fixes an error return code for the breakpoint setup 2. External interrupt fixes 2.1. Some interrupt conditions like cpu timer or clock comparator stay pending even after the interrupt is injected. If the external new PSW is enabled for interrupts this will result in an endless loop. Usually this indicates a programming error in the guest OS. Lets detect such situations and go to userspace. We will provide a QEMU patch that sets the guest in panicked/crashed state to avoid wasting CPU cycles. 2.2 Resend external interrupts back to the guest if the HW could not do it. - |
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