From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marcelo Tosatti Subject: Re: [PATCH] KVM: VMX: Require KVM_SET_TSS_ADDR being called prior to running a VCPU Date: Mon, 18 Mar 2013 13:50:54 -0300 Message-ID: <20130318165054.GA12135@amt.cnet> References: <5142D010.7060303@web.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Cc: Gleb Natapov , kvm , Paolo Bonzini To: Jan Kiszka Return-path: Received: from mx1.redhat.com ([209.132.183.28]:10514 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751431Ab3CRQyn (ORCPT ); Mon, 18 Mar 2013 12:54:43 -0400 Content-Disposition: inline In-Reply-To: <5142D010.7060303@web.de> Sender: kvm-owner@vger.kernel.org List-ID: On Fri, Mar 15, 2013 at 08:38:56AM +0100, Jan Kiszka wrote: > From: Jan Kiszka > > Very old user space (namely qemu-kvm before kvm-49) didn't set the TSS > base before running the VCPU. We always warned about this bug, but no > reports about users actually seeing this are known. Time to finally > remove the workaround that effectively prevented to call vmx_vcpu_reset > while already holding the KVM srcu lock. > > Signed-off-by: Jan Kiszka > --- > > This obsoletes all other attempts to allow vmx_vcpu_reset to be called > with the srcu lock held. Hope we can settle the topic this way. Applied, thanks.