linux-kernel - Re: [PATCH] KVM: VMX: require virtual NMI support

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: <37c3939f-6c5e-1f88-5642-a5efb3ece1c4@gmail.com>
Date:   Wed, 13 Sep 2017 19:23:37 +0200
From:   Zdenek Kaspar <zkaspar82@...il.com>
To:     linux-kernel@...r.kernel.org
Cc:     kvm@...r.kernel.org
Subject: Re: [PATCH] KVM: VMX: require virtual NMI support

On 03/27/2017 02:38 PM, Paolo Bonzini wrote:
> Virtual NMIs are only missing in Prescott and Yonah chips.  Both are obsolete
> for virtualization usage---Yonah is 32-bit only even---so drop vNMI emulation.
> 
> Signed-off-by: Paolo Bonzini <pbonzini@...hat.com>
> ---
>  arch/x86/kvm/vmx.c | 143 ++++++++++++++---------------------------------------
>  1 file changed, 38 insertions(+), 105 deletions(-)

This breaks virtualization on old Intel Core2 machines.
Any chance to revert?

TIA, Z.