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qemu-ppc64le: Switch off cap-large-decr, Power 9 KVM does not support it always #2599
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Apr 9, 2020
Large decrementer was introduced in Power 9 cpus. Switch it off "cap-large-decr=off" as not all KVM hosts support it Fixes: kata-containers#2599 Signed-off-by: Nitesh Konkar <[email protected]>
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If cap-large-decr is not enabled in the KVM, qemu fails with
Stderr: failed to launch qemu: exit status 1, error messages from qemu log: qemu-system-ppc64: No large decrementer support, try cap-large-decr=off. So let's turn it off so that we do not depend on the host KVM capabilities.Reference: https://patchwork.kernel.org/patch/10831049/
Description of problem
02:56:52 Running command '/usr/local/bin/kata-runtime [kata-runtime --log=/tmp/bundle074757847/log run --bundle=/tmp/bundle074757847 --console= --pid-file=/tmp/bundle074757847/pid --detach Emc27f9iBTaiUJvLZxTY]'
02:56:53 command failed error 'exit status 1'
02:56:53 [kata-runtime --log=/tmp/bundle074757847/log run --bundle=/tmp/bundle074757847 --console= --pid-file=/tmp/bundle074757847/pid --detach Emc27f9iBTaiUJvLZxTY]
02:56:53 Timeout: 120 seconds
02:56:53 Exit Code: 1
02:56:53 Stdout:
02:56:53 Stderr: failed to launch qemu: exit status 1, error messages from qemu log: qemu-system-ppc64: No large decrementer support, try cap-large-decr=off
02:56:53
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