linux-kernel - Re: [PATCH 1/2] KVM: SVM: Fix NMI path when NMI happens in guest mode

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, 13 Jan 2011 16:52:24 +0100
From:	"Roedel, Joerg" <Joerg.Roedel@....com>
To:	Jan Kiszka <jan.kiszka@...mens.com>
CC:	Avi Kivity <avi@...hat.com>, Marcelo Tosatti <mtosatti@...hat.com>,
	"kvm@...r.kernel.org" <kvm@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"stable@...nel.org" <stable@...nel.org>
Subject: Re: [PATCH 1/2] KVM: SVM: Fix NMI path when NMI happens in guest
 mode

On Thu, Jan 13, 2011 at 10:48:33AM -0500, Jan Kiszka wrote:
> Am 13.01.2011 16:22, Joerg Roedel wrote:
> >  #ifdef CONFIG_X86_64
> >  	wrmsrl(MSR_GS_BASE, svm->host.gs_base);
> > +	wrmsrl(MSR_KERNEL_GS_BASE, current->thread.gs);
> >  #else
> >  	loadsegment(fs, svm->host.fs);
> >  #endif
> 
> Doesn't this also obsolete the wrmsrl(MSR_KERNEL_GS_BASE) in svm_vcpu_put?

Yes it does. Thanks.

Joerg

-- 
AMD Operating System Research Center

Advanced Micro Devices GmbH Einsteinring 24 85609 Dornach
General Managers: Alberto Bozzo, Andrew Bowd
Registration: Dornach, Landkr. Muenchen; Registerger. Muenchen, HRB Nr. 43632

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/