linux-kernel - Re: [PATCH 19/27] KVM: x86/mmu: Use page-track notifiers iff there are external users

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <5581418b-2e1c-6011-f0a4-580df7e00b44@gmail.com>
Date:   Mon, 7 Aug 2023 20:01:55 +0800
From:   Like Xu <like.xu.linux@...il.com>
To:     Sean Christopherson <seanjc@...gle.com>
Cc:     kvm@...r.kernel.org, intel-gvt-dev@...ts.freedesktop.org,
        intel-gfx@...ts.freedesktop.org, linux-kernel@...r.kernel.org,
        Yan Zhao <yan.y.zhao@...el.com>,
        Ben Gardon <bgardon@...gle.com>,
        Zhi Wang <zhi.a.wang@...el.com>,
        Paolo Bonzini <pbonzini@...hat.com>,
        Zhenyu Wang <zhenyuw@...ux.intel.com>
Subject: Re: [PATCH 19/27] KVM: x86/mmu: Use page-track notifiers iff there
 are external users

On 23/12/2022 8:57 am, Sean Christopherson wrote:
> +static inline void kvm_page_track_write(struct kvm_vcpu *vcpu, gpa_t gpa,
> +					const u8 *new, int bytes)
> +{
> +	__kvm_page_track_write(vcpu, gpa, new, bytes);
> +
> +	kvm_mmu_track_write(vcpu, gpa, new, bytes);
> +}

The kvm_mmu_track_write() is only used for x86, where the incoming parameter
"u8 *new" has not been required since 0e0fee5c539b ("kvm: mmu: Fix race in
emulated page table writes"), please help confirm if it's still needed ? Thanks.
A minor clean up is proposed.