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Subject[PATCH 0/2] Fix resume failure due to PCID
Patch 1 is the fix.  Patch 2 is a comment that would have kept me from
chasing down a false lead.

I've tested patch 2 using CPU hotplug and suspend/resume. I haven't
tested hibernation or kexec because I don't know how. (If I do
systemctl hibernate on my laptop, it happily writes out a hiberation
image somewhere and then it equally happily ignores it on the next
boot. I don't know how to test kexec.)

I haven't tested the 32-bit version. I'll try to get to that

Andy Lutomirski (2):
x86/mm: Reinitialize TLB state on hotplug and resume
x86/mm: Document how CR4.PCIDE restore works

arch/x86/include/asm/tlbflush.h | 2 ++
arch/x86/kernel/cpu/common.c | 15 ++++++++++++++
arch/x86/mm/tlb.c | 44 +++++++++++++++++++++++++++++++++++++++++
arch/x86/power/cpu.c | 1 +
4 files changed, 62 insertions(+)


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