linux-kernel - Re: [PATCH] KVM: SVM: Do not issue virtual VMLOAD/VMSAVE supported-message

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] [day] [month] [year] [list]

Date:   Wed, 13 Sep 2017 23:31:57 +0200
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Radim Krčmář <rkrcmar@...hat.com>,
        Borislav Petkov <bp@...en8.de>
Cc:     KVM <kvm@...r.kernel.org>, LKML <linux-kernel@...r.kernel.org>,
        Janakarajan Natarajan <Janakarajan.Natarajan@....com>
Subject: Re: [PATCH] KVM: SVM: Do not issue virtual VMLOAD/VMSAVE
 supported-message

On 13/09/2017 16:06, Radim Krčmář wrote:
> -	}
> +	if (!boot_cpu_has(X86_FEATURE_VGIF))
> +		vgif = false;
> +
> +	pr_info("SVM nested=%d npt=%d avic=%d vls=%d vgif=%d\n",
> +			nested, npt_enabled, avic, vls, vgif);

 I doubt we'd get the above info message more than sporadically, and all
these are available with a simple

grep -r . /sys/module/kvm_amd/parameters

which we already do routinely ask bug reporters for the equivalent
kvm_intel.  So I'd say, zap it.

Paolo