From owner-svn-src-head@freebsd.org Fri Jan 4 17:10:17 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 46AD61432660; Fri, 4 Jan 2019 17:10:17 +0000 (UTC) (envelope-from markj@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 E15D971B9C; Fri, 4 Jan 2019 17:10:16 +0000 (UTC) (envelope-from markj@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 C7C1E3B0C; Fri, 4 Jan 2019 17:10:16 +0000 (UTC) (envelope-from markj@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x04HAGIF027683; Fri, 4 Jan 2019 17:10:16 GMT (envelope-from markj@FreeBSD.org) Received: (from markj@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x04HAGiV027682; Fri, 4 Jan 2019 17:10:16 GMT (envelope-from markj@FreeBSD.org) Message-Id: <201901041710.x04HAGiV027682@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: markj set sender to markj@FreeBSD.org using -f From: Mark Johnston Date: Fri, 4 Jan 2019 17:10:16 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r342765 - head/sys/riscv/riscv X-SVN-Group: head X-SVN-Commit-Author: markj X-SVN-Commit-Paths: head/sys/riscv/riscv X-SVN-Commit-Revision: 342765 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: E15D971B9C X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.94 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.997,0]; NEURAL_HAM_SHORT(-0.94)[-0.940,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US]; NEURAL_HAM_LONG(-1.00)[-0.999,0] 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, 04 Jan 2019 17:10:17 -0000 Author: markj Date: Fri Jan 4 17:10:16 2019 New Revision: 342765 URL: https://svnweb.freebsd.org/changeset/base/342765 Log: Fix dirty bit handling in pmap_remove_write(). Reviewed by: jhb, kib MFC after: 1 week Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D18732 Modified: head/sys/riscv/riscv/pmap.c Modified: head/sys/riscv/riscv/pmap.c ============================================================================== --- head/sys/riscv/riscv/pmap.c Fri Jan 4 17:08:45 2019 (r342764) +++ head/sys/riscv/riscv/pmap.c Fri Jan 4 17:10:16 2019 (r342765) @@ -2947,15 +2947,13 @@ retry_pv_loop: } } l3 = pmap_l3(pmap, pv->pv_va); -retry: oldl3 = pmap_load(l3); - +retry: if ((oldl3 & PTE_W) != 0) { - newl3 = oldl3 & ~PTE_W; - if (!atomic_cmpset_long(l3, oldl3, newl3)) + newl3 = oldl3 & ~(PTE_D | PTE_W); + if (!atomic_fcmpset_long(l3, &oldl3, newl3)) goto retry; - /* TODO: check for PTE_D? */ - if ((oldl3 & PTE_A) != 0) + if ((oldl3 & PTE_D) != 0) vm_page_dirty(m); pmap_invalidate_page(pmap, pv->pv_va); }