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Tue, 2 Jul 2019 05:16:45 GMT Received: from z2.cn.oracle.com (/10.182.69.87) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Mon, 01 Jul 2019 22:16:44 -0700 X-Inumbo-ID: 9d6861f6-9c88-11e9-8713-ab1a8d047537 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : cc : subject : date : message-id : in-reply-to : references; s=corp-2018-07-02; bh=EFSmZR+aQfjnbpTqhm/zuPPtTY2fNuao7fBCYCnO2FA=; b=JiBXcM/nBdWreFF1r561875O89x9rICsQrwdJFWJnE2YbA+7E1b6arNH18k5NYmr2rr8 wBfsEdtcmks/oNOXRJWJ6vB5/ev6783Au6Cru+9f6IielStLTvl99eRIaVVWUIF87Xgx 3Clu585huEI9bXexO/B9NSiCduN45GlyUX274E4f5Xm6IIctAhJT7sxujEKDvVikEmTM TnNbYX2HSz4SF9XQK5Fk6LFWOLDrLjbWRKW6XvoCLew0K2f5H19zQ76o8mP+CFC9aONB vMW3/f8kGkFe5wtmrStuye3Wn6PoIAuMbSKIoOd9JDLolBJl9yp3v6kcjU/y/YlvK5l5 ZA== From: Zhenzhong Duan To: linux-kernel@vger.kernel.org Date: Mon, 1 Jul 2019 13:19:57 +0800 Message-Id: <1561958399-28906-4-git-send-email-zhenzhong.duan@oracle.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1561958399-28906-1-git-send-email-zhenzhong.duan@oracle.com> References: <1561958399-28906-1-git-send-email-zhenzhong.duan@oracle.com> X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9305 signatures=668688 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=1 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1907020057 X-Proofpoint-Virus-Version: vendor=nai engine=6000 definitions=9305 signatures=668688 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 priorityscore=1501 malwarescore=0 suspectscore=1 phishscore=0 bulkscore=0 spamscore=0 clxscore=1015 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1907020058 Subject: [Xen-devel] [PATCH v4 3/5] Revert "xen: Introduce 'xen_nopv' to disable PV extensions for HVM guests." X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: jgross@suse.com, sstabellini@kernel.org, Zhenzhong Duan , mingo@redhat.com, bp@alien8.de, xen-devel@lists.xenproject.org, boris.ostrovsky@oracle.com, tglx@linutronix.de MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) This reverts commit 8d693b911bb9c57009c24cb1772d205b84c7985c. Instead we use an unified parameter 'nopv' for all the hypervisor platforms. Signed-off-by: Zhenzhong Duan Reviewed-by: Juergen Gross Cc: Boris Ostrovsky Cc: Juergen Gross Cc: Stefano Stabellini Cc: Thomas Gleixner Cc: Ingo Molnar Cc: Borislav Petkov --- Documentation/admin-guide/kernel-parameters.txt | 4 ---- arch/x86/xen/enlighten_hvm.c | 12 +----------- 2 files changed, 1 insertion(+), 15 deletions(-) diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentatio= n/admin-guide/kernel-parameters.txt index 21e08af..d5c3dcc 100644 --- a/Documentation/admin-guide/kernel-parameters.txt +++ b/Documentation/admin-guide/kernel-parameters.txt @@ -5251,10 +5251,6 @@ Disables the ticketlock slowpath using Xen PV optimizations. =20 - xen_nopv [X86] - Disables the PV optimizations forcing the HVM guest to - run as generic HVM guest with no PV drivers. - xen_scrub_pages=3D [XEN] Boolean option to control scrubbing pages before giving them back to Xen, for use by other domains. Can be also changed at runtime diff --git a/arch/x86/xen/enlighten_hvm.c b/arch/x86/xen/enlighten_hvm.c index ac4943c..7fcb4ea 100644 --- a/arch/x86/xen/enlighten_hvm.c +++ b/arch/x86/xen/enlighten_hvm.c @@ -210,18 +210,8 @@ static void __init xen_hvm_guest_init(void) #endif } =20 -static bool xen_nopv; -static __init int xen_parse_nopv(char *arg) -{ - xen_nopv =3D true; - return 0; -} -early_param("xen_nopv", xen_parse_nopv); - bool __init xen_hvm_need_lapic(void) { - if (xen_nopv) - return false; if (xen_pv_domain()) return false; if (!xen_hvm_domain()) @@ -233,7 +223,7 @@ bool __init xen_hvm_need_lapic(void) =20 static uint32_t __init xen_platform_hvm(void) { - if (xen_pv_domain() || xen_nopv) + if (xen_pv_domain()) return 0; =20 return xen_cpuid_base(); --=20 1.8.3.1 _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel