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]
Date:   Thu, 15 Jul 2021 13:19:16 +0200
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Like Xu <like.xu.linux@...il.com>, Joerg Roedel <joro@...tes.org>
Cc:     Sean Christopherson <seanjc@...gle.com>,
        Vitaly Kuznetsov <vkuznets@...hat.com>,
        Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>, x86@...nel.org,
        linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Subject: Re: [PATCH] KVM: x86/cpuid: Expose the true number of available ASIDs

On 15/07/21 12:45, Like Xu wrote:
> The original fixed number "8" was first introduced 11 years ago. Time has
> passed and now let KVM report the true number of address space identifiers
> (ASIDs) that are supported by the processor returned in Fn8000_000A_EBX.
> 
> It helps user-space to make better decisions about guest values.
>
> -		entry->ebx = 8; /* Lets support 8 ASIDs in case we add proper
> -				   ASID emulation to nested SVM */

Why, since we don't have ASID emulation yet anyway?

Paolo

Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ