From mboxrd@z Thu Jan 1 00:00:00 1970 From: Paolo Bonzini Subject: Re: [PATCH 3/9] KVM: x86: add pcommit support Date: Tue, 8 Sep 2015 22:33:44 +0200 Message-ID: <55EF4628.4070607@redhat.com> References: <1440132611-26052-1-git-send-email-guangrong.xiao@linux.intel.com> <1440132611-26052-4-git-send-email-guangrong.xiao@linux.intel.com> <55ED729F.2020107@redhat.com> <55EEEDEF.4070902@linux.intel.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: QUOTED-PRINTABLE Cc: gleb@kernel.org, mtosatti@redhat.com, kvm@vger.kernel.org, linux-kernel@vger.kernel.org To: Xiao Guangrong Return-path: In-Reply-To: <55EEEDEF.4070902@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org List-Id: kvm.vger.kernel.org On 08/09/2015 16:17, Xiao Guangrong wrote: >=20 > BTW, the spec saied: >=20 > | IA32_VMX_PROCBASED_CTLS2[53] (which enumerates support for the > 1-setting of =E2=80=9CPCOMMIT exiting=E2=80=9D) is > | always the same as CPUID.07H:EBX.PCOMMIT[bit 22]. Thus, software ca= n > set =E2=80=9CPCOMMIT exiting=E2=80=9D to 1 > | if and only if the PCOMMIT instruction is enumerated via CPUID Thanks. Can you add it to the commit message ("allow L1 to catch this instruction for L2 if, as required by the spec, L1 can enumerate the PCOMMIT instruction via CPUID"). Paolo