Re: WARNING trace at kvm_nx_huge_page_recovery_worker on 6.3.4

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Il giorno dom 28 mag 2023 alle ore 14:44 Bagas Sanjaya
<bagasdotme@xxxxxxxxx> ha scritto:

>
> Thanks for the regression report. I'm adding it to regzbot:
>
> #regzbot ^introduced: v6.3.1..v6.3.2
> #regzbot title: WARNING trace at kvm_nx_huge_page_recovery_worker when opening a new tab in Chrome

Out of curiosity, I recompiled 6.3.4 after reverting the following
commit mentioned in 6.3.2 changelog:

commit 2ec1fe292d6edb3bd112f900692d9ef292b1fa8b
Author: Sean Christopherson <seanjc@xxxxxxxxxx>
Date:   Wed Apr 26 15:03:23 2023 -0700
KVM: x86: Preserve TDP MMU roots until they are explicitly invalidated
commit edbdb43fc96b11b3bfa531be306a1993d9fe89ec upstream.

And the WARN message no longer appears on my host kernel logs, at
least so far :)

>
> Fabio, can you also check the mainline (on guest)?

Not sure to understand, you mean 6.4-rcX? I can do that, sure, but why
on guest? The WARN appears on host logs, the one with 6.3.4 kernel.
Guest is a standard ubuntu 22.04, currently with 5.19.0-42-generic
(ubuntu) kernel


-- 
Fabio



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