linux-kernel - Re: [PATCH v18 032/121] KVM: x86/mmu: introduce config for PRIVATE KVM MMU

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: <CABgObfYFnpe_BO5bNRvXC6Y-3rUxFAogs2TGFUTBu+JR25N=pQ@mail.gmail.com>
Date: Tue, 13 Feb 2024 17:47:43 +0100
From: Paolo Bonzini <pbonzini@...hat.com>
To: Sean Christopherson <seanjc@...gle.com>
Cc: isaku.yamahata@...el.com, kvm@...r.kernel.org, 
	linux-kernel@...r.kernel.org, isaku.yamahata@...il.com, erdemaktas@...gle.com, 
	Sagi Shahar <sagis@...gle.com>, Kai Huang <kai.huang@...el.com>, chen.bo@...el.com, 
	hang.yuan@...el.com, tina.zhang@...el.com
Subject: Re: [PATCH v18 032/121] KVM: x86/mmu: introduce config for PRIVATE
 KVM MMU

On Tue, Feb 13, 2024 at 3:57 AM Sean Christopherson <seanjc@...gle.com> wrote:
> The only thing that even so much as approaches being a hot path is
> kvm_gfn_shared_mask(), and if that needs to be optimized, then we'd probably be
> better off with a static_key, a la kvm_has_noapic_vcpu (though I'm *extremely*
> skeptical that that adds any measurable benefit).

I'm okay with killing it altogether.

Paolo