linux-kernel - Re: [PATCH 0/3] KVM: VMX: fix handling inv{ept,vpid} and nested RHEL6 KVM

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: <CALzav=dw6OuRA=a6nk_2mMb6NEGRmfD7-+M4zw3eFfOvHYuFEA@mail.gmail.com>
Date:	Fri, 18 Mar 2016 10:42:02 -0700
From:	David Matlack <dmatlack@...gle.com>
To:	Paolo Bonzini <pbonzini@...hat.com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	kvm list <kvm@...r.kernel.org>, jmontleo@...hat.com,
	bdas@...hat.com
Subject: Re: [PATCH 0/3] KVM: VMX: fix handling inv{ept,vpid} and nested RHEL6 KVM

On Fri, Mar 18, 2016 at 9:09 AM, Paolo Bonzini <pbonzini@...hat.com> wrote:
> Patches 1 and 2 fix two cases where a guest could hang at 100% CPU
> due to mis-emulation of a failing invept or invvpid.

Will you be sending out kvm-unit-test test cases for these?

>
> Patch 3 works around a bug in RHEL6 KVM, which is exposed by nested
> VPID support; RHEL6 KVM uses single-context invvpid unconditionally,
> but until now KVM did not provide it.
>
> Paolo
>

For the series,

Reviewed-by: David Matlack <dmatlack@...gle.com>

> Paolo Bonzini (3):
>   KVM: VMX: avoid guest hang on invalid invept instruction
>   KVM: VMX: avoid guest hang on invalid invvpid instruction
>   KVM: VMX: fix nested vpid for old KVM guests
>
>  arch/x86/kvm/vmx.c | 16 +++++++++++++++-
>  1 file changed, 15 insertions(+), 1 deletion(-)
>
> --
> 1.8.3.1
>