From owner-svn-src-head@freebsd.org Fri Jun 14 22:06:44 2019 Return-Path: Delivered-To: svn-src-head@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id BD7F415B2A7E; Fri, 14 Jun 2019 22:06:44 +0000 (UTC) (envelope-from alc@FreeBSD.org) Received: from mxrelay.nyi.freebsd.org (mxrelay.nyi.freebsd.org [IPv6:2610:1c1:1:606c::19:3]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 616C182E3E; Fri, 14 Jun 2019 22:06:44 +0000 (UTC) (envelope-from alc@FreeBSD.org) Received: from repo.freebsd.org (repo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:0]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 3492C1DDE6; Fri, 14 Jun 2019 22:06:44 +0000 (UTC) (envelope-from alc@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x5EM6i2i031199; Fri, 14 Jun 2019 22:06:44 GMT (envelope-from alc@FreeBSD.org) Received: (from alc@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x5EM6i9W031198; Fri, 14 Jun 2019 22:06:44 GMT (envelope-from alc@FreeBSD.org) Message-Id: <201906142206.x5EM6i9W031198@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: alc set sender to alc@FreeBSD.org using -f From: Alan Cox Date: Fri, 14 Jun 2019 22:06:44 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r349042 - head/sys/arm64/arm64 X-SVN-Group: head X-SVN-Commit-Author: alc X-SVN-Commit-Paths: head/sys/arm64/arm64 X-SVN-Commit-Revision: 349042 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 616C182E3E X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.95 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.999,0]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; NEURAL_HAM_SHORT(-0.95)[-0.952,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US] X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 14 Jun 2019 22:06:44 -0000 Author: alc Date: Fri Jun 14 22:06:43 2019 New Revision: 349042 URL: https://svnweb.freebsd.org/changeset/base/349042 Log: Batch the TLB invalidations that are performed by pmap_protect() rather than performing them one at a time. MFC after: 10 days Modified: head/sys/arm64/arm64/pmap.c Modified: head/sys/arm64/arm64/pmap.c ============================================================================== --- head/sys/arm64/arm64/pmap.c Fri Jun 14 20:35:37 2019 (r349041) +++ head/sys/arm64/arm64/pmap.c Fri Jun 14 22:06:43 2019 (r349042) @@ -2791,8 +2791,15 @@ pmap_protect(pmap_t pmap, vm_offset_t sva, vm_offset_t for (l3p = pmap_l2_to_l3(l2, sva); sva != va_next; l3p++, sva += L3_SIZE) { l3 = pmap_load(l3p); - if (!pmap_l3_valid(l3)) + if (!pmap_l3_valid(l3)) { + if (va != va_next) { + pmap_invalidate_range(pmap, va, sva); + va = va_next; + } continue; + } + if (va == va_next) + va = sva; nbits = 0; if ((prot & VM_PROT_WRITE) == 0) { @@ -2807,9 +2814,9 @@ pmap_protect(pmap_t pmap, vm_offset_t sva, vm_offset_t nbits |= ATTR_XN; pmap_set(l3p, nbits); - /* XXX: Use pmap_invalidate_range */ - pmap_invalidate_page(pmap, sva); } + if (va != va_next) + pmap_invalidate_range(pmap, va, sva); } PMAP_UNLOCK(pmap); }