Messages in this thread | | | Subject | Re: [PATCH] KVM: VMX: Cache IA32_DEBUGCTL in memory | From | Paolo Bonzini <> | Date | Wed, 29 Nov 2017 23:26:30 +0100 |
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On 29/11/2017 19:20, Andi Kleen wrote: > But I haven't looked too closely, but I suspect you'll clobber global > kernel debugger state this way.
I checked all callers of update_debugctlmsr, and couldn't find any that could run asynchronously while KVM is caching the value. For example __switch_to_xtra would always run before the sched_in notifier.
Thanks,
Paolo
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