Message ID | 20200420124434.47330-20-aneesh.kumar@linux.ibm.com (mailing list archive) |
---|---|
State | New, archived |
Headers | show
Return-Path: <SRS0=EpiA=6E=kvack.org=owner-linux-mm@kernel.org> Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 0D19214B4 for <patchwork-linux-mm@patchwork.kernel.org>; Mon, 20 Apr 2020 12:46:24 +0000 (UTC) Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by mail.kernel.org (Postfix) with ESMTP id D84A720747 for <patchwork-linux-mm@patchwork.kernel.org>; Mon, 20 Apr 2020 12:46:23 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org D84A720747 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.ibm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=owner-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix) id B06328E0011; Mon, 20 Apr 2020 08:46:20 -0400 (EDT) Delivered-To: linux-mm-outgoing@kvack.org Received: by kanga.kvack.org (Postfix, from userid 40) id ADEB08E0008; Mon, 20 Apr 2020 08:46:20 -0400 (EDT) X-Original-To: int-list-linux-mm@kvack.org X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 980A38E0011; Mon, 20 Apr 2020 08:46:20 -0400 (EDT) X-Original-To: linux-mm@kvack.org X-Delivered-To: linux-mm@kvack.org Received: from forelay.hostedemail.com (smtprelay0048.hostedemail.com [216.40.44.48]) by kanga.kvack.org (Postfix) with ESMTP id 67BF38E0008 for <linux-mm@kvack.org>; Mon, 20 Apr 2020 08:46:20 -0400 (EDT) Received: from smtpin20.hostedemail.com (10.5.19.251.rfc1918.com [10.5.19.251]) by forelay01.hostedemail.com (Postfix) with ESMTP id 236B1180ACF76 for <linux-mm@kvack.org>; Mon, 20 Apr 2020 12:46:20 +0000 (UTC) X-FDA: 76728206520.20.sugar29_7179be502b35a X-Spam-Summary: 2,0,0,b8f8cb607bc7ad58,d41d8cd98f00b204,aneesh.kumar@linux.ibm.com,,RULES_HIT:41:355:379:541:800:960:973:988:989:1042:1260:1261:1311:1314:1345:1359:1431:1437:1515:1534:1540:1711:1714:1730:1747:1777:1792:2393:2559:2562:2898:3138:3139:3140:3141:3142:3350:3865:3867:3868:3871:4321:5007:6261:8634:10004:11026:11657:11658:11914:12043:12048:12297:12438:12555:12679:12895:13069:13180:13229:13255:13311:13357:13894:14096:14181:14384:14394:14721:21063:21080:21324:21451:21627:21772:21990:30054:30069:30070,0,RBL:148.163.158.5:@linux.ibm.com:.lbl8.mailshell.net-62.2.0.100 64.100.201.201,CacheIP:none,Bayesian:0.5,0.5,0.5,Netcheck:none,DomainCache:0,MSF:not bulk,SPF:fp,MSBL:0,DNSBL:neutral,Custom_rules:0:0:0,LFtime:24,LUA_SUMMARY:none X-HE-Tag: sugar29_7179be502b35a X-Filterd-Recvd-Size: 4438 Received: from mx0a-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) by imf08.hostedemail.com (Postfix) with ESMTP for <linux-mm@kvack.org>; Mon, 20 Apr 2020 12:46:19 +0000 (UTC) Received: from pps.filterd (m0098419.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 03KCVMk6078113; Mon, 20 Apr 2020 08:46:15 -0400 Received: from pps.reinject (localhost [127.0.0.1]) by mx0b-001b2d01.pphosted.com with ESMTP id 30gcs36f84-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 20 Apr 2020 08:46:15 -0400 Received: from m0098419.ppops.net (m0098419.ppops.net [127.0.0.1]) by pps.reinject (8.16.0.36/8.16.0.36) with SMTP id 03KCVbwp078957; Mon, 20 Apr 2020 08:46:15 -0400 Received: from ppma05wdc.us.ibm.com (1b.90.2fa9.ip4.static.sl-reverse.com [169.47.144.27]) by mx0b-001b2d01.pphosted.com with ESMTP id 30gcs36f7t-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 20 Apr 2020 08:46:15 -0400 Received: from pps.filterd (ppma05wdc.us.ibm.com [127.0.0.1]) by ppma05wdc.us.ibm.com (8.16.0.27/8.16.0.27) with SMTP id 03KCjNuH015619; Mon, 20 Apr 2020 12:46:14 GMT Received: from b03cxnp07029.gho.boulder.ibm.com (b03cxnp07029.gho.boulder.ibm.com [9.17.130.16]) by ppma05wdc.us.ibm.com with ESMTP id 30fs668jg8-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Mon, 20 Apr 2020 12:46:14 +0000 Received: from b03ledav002.gho.boulder.ibm.com (b03ledav002.gho.boulder.ibm.com [9.17.130.233]) by b03cxnp07029.gho.boulder.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 03KCkDjr48628122 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 20 Apr 2020 12:46:13 GMT Received: from b03ledav002.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 002D2136059; Mon, 20 Apr 2020 12:46:13 +0000 (GMT) Received: from b03ledav002.gho.boulder.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 23153136061; Mon, 20 Apr 2020 12:46:09 +0000 (GMT) Received: from skywalker.ibmuc.com (unknown [9.199.51.43]) by b03ledav002.gho.boulder.ibm.com (Postfix) with ESMTP; Mon, 20 Apr 2020 12:46:08 +0000 (GMT) From: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> To: linuxppc-dev@lists.ozlabs.org, mpe@ellerman.id.au, linux-mm@kvack.org, linux-kernel@vger.kernel.org, kvm-ppc@vger.kernel.org Cc: npiggin@gmail.com, paulus@ozlabs.org, leonardo@linux.ibm.com, kirill@shutemov.name, "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com> Subject: [PATCH v3 19/22] powerpc/kvm/book3s: Use pte_present instead of opencoding _PAGE_PRESENT check Date: Mon, 20 Apr 2020 18:14:31 +0530 Message-Id: <20200420124434.47330-20-aneesh.kumar@linux.ibm.com> X-Mailer: git-send-email 2.25.3 In-Reply-To: <20200420124434.47330-1-aneesh.kumar@linux.ibm.com> References: <20200420124434.47330-1-aneesh.kumar@linux.ibm.com> MIME-Version: 1.0 X-TM-AS-GCONF: 00 X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138,18.0.676 definitions=2020-04-20_03:2020-04-20,2020-04-20 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 bulkscore=0 malwarescore=0 impostorscore=0 priorityscore=1501 mlxlogscore=999 lowpriorityscore=0 phishscore=0 adultscore=0 clxscore=1015 spamscore=0 mlxscore=0 suspectscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2003020000 definitions=main-2004200107 Content-Transfer-Encoding: quoted-printable X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: <linux-mm.kvack.org> |
Series |
Avoid IPI while updating page table entries.
|
expand
|
diff --git a/arch/powerpc/include/asm/kvm_book3s_64.h b/arch/powerpc/include/asm/kvm_book3s_64.h index 1ca1f6495012..c58e64a0a74f 100644 --- a/arch/powerpc/include/asm/kvm_book3s_64.h +++ b/arch/powerpc/include/asm/kvm_book3s_64.h @@ -435,7 +435,7 @@ static inline pte_t kvmppc_read_update_linux_pte(pte_t *ptep, int writing) continue; } /* If pte is not present return None */ - if (unlikely(!(pte_val(old_pte) & _PAGE_PRESENT))) + if (unlikely(!pte_present(old_pte))) return __pte(0); new_pte = pte_mkyoung(old_pte);
This adds _PAGE_PTE check and makes sure we validate the pte value returned via find_kvm_host_pte. NOTE: this also considers _PAGE_INVALID to the software valid bit. Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.ibm.com> --- arch/powerpc/include/asm/kvm_book3s_64.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)