------- Comment on attachment From [email protected] 2018-01-09 01:40
EDT-------
When attempting to load a livepatch module, I got the following error:
module_64: patch_module: Expect noop after relocate, got 3c820000
The error was triggered by the following code in
unregister_netdevice_queue():
14c: 00 00 00 48 b 14c <unregister_netdevice_queue+0x14c>
14c: R_PPC64_REL24 net_set_todo
150: 00 00 82 3c addis r4,r2,0
GCC didn't insert a nop after the branch to net_set_todo() because it's
a sibling call, so it never returns. The nop isn't needed after the
branch in that case.
** Attachment added: "[2/3] powerpc/modules: Don't try to restore r2 after a
sibling call"
https://bugs.launchpad.net/bugs/1741992/+attachment/5041045/+files/0002-powerpc-modules-Don-t-try-to-restore-r2-after-a-sibl.patch
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https://bugs.launchpad.net/bugs/1741992
Title:
[18.04] kpatch - Add livepatch hook support for ppc64le
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