From: Yu Zhao <yuzhao@google.com>
To: Sean Christopherson <seanjc@google.com>
Cc: Marc Zyngier <maz@kernel.org>,
Oliver Upton <oliver.upton@linux.dev>,
Huacai Chen <chenhuacai@kernel.org>,
Anup Patel <anup@brainfault.org>,
Paul Walmsley <paul.walmsley@sifive.com>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>,
Paolo Bonzini <pbonzini@redhat.com>,
linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev,
linux-mips@vger.kernel.org, kvm@vger.kernel.org,
kvm-riscv@lists.infradead.org, linux-riscv@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH] KVM: Wrap kvm_{gfn,hva}_range.pte in a per-action union
Date: Mon, 31 Jul 2023 14:35:29 -0600 [thread overview]
Message-ID: <CAOUHufaK1zibYzOxUGWgYatLnts+fOG6X8fBAwtGA_S6cdDxMw@mail.gmail.com> (raw)
In-Reply-To: <20230729004144.1054885-1-seanjc@google.com>
On Fri, Jul 28, 2023 at 6:41 PM Sean Christopherson <seanjc@google.com> wrote:
>
> Wrap kvm_{gfn,hva}_range.pte in a union so that future notifier events can
> pass event specific information up and down the stack without needing to
> constantly expand and churn the APIs. Lockless aging of SPTEs will pass
> around a bitmap, and support for memory attributes will pass around the
> new attributes for the range.
>
> Add a "KVM_NO_ARG" placeholder to simplify handling events without an
> argument (creating a dummy union variable is midly annoying).
>
> Opportunstically drop explicit zero-initialization of the "pte" field, as
> omitting the field (now a union) has the same effect.
>
> Cc: Yu Zhao <yuzhao@google.com>
> Link: https://lore.kernel.org/all/CAOUHufagkd2Jk3_HrVoFFptRXM=hX2CV8f+M-dka-hJU4bP8kw@mail.gmail.com
> Signed-off-by: Sean Christopherson <seanjc@google.com>
Acked-by: Yu Zhao <yuzhao@google.com>
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next prev parent reply other threads:[~2023-07-31 20:36 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-07-29 0:41 [PATCH] KVM: Wrap kvm_{gfn,hva}_range.pte in a per-action union Sean Christopherson
2023-07-31 17:37 ` Oliver Upton
2023-07-31 17:41 ` Sean Christopherson
2023-07-31 20:35 ` Yu Zhao [this message]
2023-08-18 0:08 ` Sean Christopherson
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