linux-kernel - Re: [PATCH 0/2] KVM: arm64: Fix sleeping while atomic BUG() on OOM

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Message-ID: <20200818101607.GB15543@willie-the-truck>
Date:   Tue, 18 Aug 2020 11:16:08 +0100
From:   Will Deacon <will@...nel.org>
To:     Paolo Bonzini <pbonzini@...hat.com>
Cc:     kvmarm@...ts.cs.columbia.edu, linux-kernel@...r.kernel.org,
        kvm@...r.kernel.org, Marc Zyngier <maz@...nel.org>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        James Morse <james.morse@....com>,
        Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Paul Mackerras <paulus@...abs.org>,
        Sean Christopherson <sean.j.christopherson@...el.com>
Subject: Re: [PATCH 0/2] KVM: arm64: Fix sleeping while atomic BUG() on OOM

On Tue, Aug 18, 2020 at 08:31:08AM +0200, Paolo Bonzini wrote:
> On 11/08/20 12:27, Will Deacon wrote:
> > Will Deacon (2):
> >   KVM: Pass MMU notifier range flags to kvm_unmap_hva_range()
> >   KVM: arm64: Only reschedule if MMU_NOTIFIER_RANGE_BLOCKABLE is not set
> > 
> >  arch/arm64/include/asm/kvm_host.h   |  2 +-
> >  arch/arm64/kvm/mmu.c                | 19 ++++++++++++++-----
> >  arch/mips/include/asm/kvm_host.h    |  2 +-
> >  arch/mips/kvm/mmu.c                 |  3 ++-
> >  arch/powerpc/include/asm/kvm_host.h |  3 ++-
> >  arch/powerpc/kvm/book3s.c           |  3 ++-
> >  arch/powerpc/kvm/e500_mmu_host.c    |  3 ++-
> >  arch/x86/include/asm/kvm_host.h     |  3 ++-
> >  arch/x86/kvm/mmu/mmu.c              |  3 ++-
> >  virt/kvm/kvm_main.c                 |  3 ++-
> >  10 files changed, 30 insertions(+), 14 deletions(-)
> > 
> 
> These would be okay for 5.9 too, so I plan to queue them myself before
> we fork for 5.10.

Thanks, Paolo. Let me know if you want me to rebase/repost.

Please note that I'm planning on rewriting most of the arm64 KVM page-table
code for 5.10, so if you can get this series in early (e.g. for -rc2), then
it would _really_ help with managing the kvm/arm64 queue for the next merge
window.

Otherwise, could you and Marc please set up a shared branch with just these,
so I can use it as a base?

Please let me know.

Will