Hi Ingo, Eric, On 02/16/18 at 10:38am, Ingo Molnar wrote: > > * Baoquan He <[email protected]> wrote: > > > This is v5 post. Newly added patch 0002 includes the change > > related to KEXEC_JUMP path. Patch 0003 only includes the > > regression fix. > > > > A regression bug was introduced in below commit. > > commit 522e66464467 ("x86/apic: Disable I/O APIC before shutdown of the > > local APIC") > > > > It caused the action to fail that we try to restore boot irq mode > > in reboot and kexec/kdump. Details can be seen in patch 0003. > > > > Warning can always be seen during kdump kernel boot on qemu/kvm > > platform. Our customer even saw casual kdump kernel hang once in > > ~30 attempts during stress testing of kdump on KVM machine. > > > > v4->v5: > > Take out the change related to KEXEC_JUMP to a new patch 0002 > > according to Eric's suggestion. > > Patch 0003 in this series only includes the regression fix. > > > > v3->v4: > > Eric pointed out that in patch 0002 the change related to > > KEXEC_JUMP is not right. > > Correct it. > > > > Add Fixes tag and Cc to stable. > > Eric, are these patches looking good to you now?
Thanks for checking this! I got warning message from kbuild test robot on previous v3 and v4. I guess this v5 post also has the issue since the code is the same, just patch format is changed. Will report status after investigation. Thanks Baoquan
