From: David Hildenbrand <david@redhat.com>
To: Paolo Bonzini <pbonzini@redhat.com>,
linux-kernel@vger.kernel.org, kvm@vger.kernel.org
Cc: Marc Zyngier <maz@kernel.org>,
Oliver Upton <oliver.upton@linux.dev>,
Tianrui Zhao <zhaotianrui@loongson.cn>,
Bibo Mao <maobibo@loongson.cn>,
Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
Nicholas Piggin <npiggin@gmail.com>,
Anup Patel <anup@brainfault.org>,
Atish Patra <atishp@atishpatra.org>,
Sean Christopherson <seanjc@google.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev,
loongarch@lists.linux.dev, linux-mips@vger.kernel.org,
linuxppc-dev@lists.ozlabs.org, kvm-riscv@lists.infradead.org,
linux-mm@kvack.org, linux-trace-kernel@vger.kernel.org,
linux-perf-users@vger.kernel.org
Subject: Re: [PATCH 3/4] mmu_notifier: remove the .change_pte() callback
Date: Mon, 8 Apr 2024 09:35:21 +0200 [thread overview]
Message-ID: <e40ad5e2-6679-47f6-ab9f-14625627ac1e@redhat.com> (raw)
In-Reply-To: <20240405115815.3226315-4-pbonzini@redhat.com>
On 05.04.24 13:58, Paolo Bonzini wrote:
> The scope of set_pte_at_notify() has reduced more and more through the
> years. Initially, it was meant for when the change to the PTE was
> not bracketed by mmu_notifier_invalidate_range_{start,end}(). However,
> that has not been so for over ten years. During all this period
> the only implementation of .change_pte() was KVM and it
> had no actual functionality, because it was called after
> mmu_notifier_invalidate_range_start() zapped the secondary PTE.
>
> Now that this (nonfunctional) user of the .change_pte() callback is
> gone, the whole callback can be removed. For now, leave in place
> set_pte_at_notify() even though it is just a synonym for set_pte_at().
>
> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
> ---
Reviewed-by: David Hildenbrand <david@redhat.com>
--
Cheers,
David / dhildenb
next prev parent reply other threads:[~2024-04-08 7:35 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-04-05 11:58 [PATCH 0/4] KVM, mm: remove the .change_pte() MMU notifier and set_pte_at_notify() Paolo Bonzini
2024-04-05 11:58 ` [PATCH 1/4] KVM: delete .change_pte MMU notifier callback Paolo Bonzini
2024-04-07 4:50 ` Anup Patel
2024-04-08 7:23 ` maobibo
2024-04-08 11:45 ` Michael Ellerman
2024-04-08 13:56 ` Peter Xu
2024-04-11 16:55 ` Paolo Bonzini
2024-04-11 18:47 ` Peter Xu
2024-04-12 20:01 ` David Hildenbrand
2024-04-12 10:44 ` Will Deacon
2024-04-12 13:15 ` Marc Zyngier
2024-04-12 14:54 ` Sean Christopherson
2024-04-13 9:56 ` Marc Zyngier
2024-04-15 17:03 ` Sean Christopherson
2024-04-18 14:19 ` Will Deacon
2024-04-18 19:53 ` Sean Christopherson
2024-04-19 11:24 ` Will Deacon
2024-04-19 13:58 ` Sean Christopherson
2024-06-12 15:22 ` Sean Christopherson
2024-06-12 17:31 ` Sean Christopherson
2024-04-05 11:58 ` [PATCH 2/4] KVM: remove unused argument of kvm_handle_hva_range() Paolo Bonzini
2024-04-08 6:31 ` Philippe Mathieu-Daudé
2024-04-05 11:58 ` [PATCH 3/4] mmu_notifier: remove the .change_pte() callback Paolo Bonzini
2024-04-08 7:35 ` David Hildenbrand [this message]
2024-04-05 11:58 ` [PATCH 4/4] mm: replace set_pte_at_notify() with just set_pte_at() Paolo Bonzini
2024-04-08 6:28 ` Philippe Mathieu-Daudé
2024-04-08 7:36 ` David Hildenbrand
2024-04-10 21:30 ` [PATCH 0/4] KVM, mm: remove the .change_pte() MMU notifier and set_pte_at_notify() Andrew Morton
2024-04-11 16:57 ` Paolo Bonzini
2024-04-12 13:07 ` Marc Zyngier
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