From owner-svn-src-head@freebsd.org Tue Mar 5 23:56:41 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 B9910151C0EC; Tue, 5 Mar 2019 23:56:41 +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 5E4CD8EF29; Tue, 5 Mar 2019 23:56:41 +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 4DB952368C; Tue, 5 Mar 2019 23:56:41 +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 x25NufjL019511; Tue, 5 Mar 2019 23:56:41 GMT (envelope-from markj@FreeBSD.org) Received: (from markj@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x25Nuf9H019510; Tue, 5 Mar 2019 23:56:41 GMT (envelope-from markj@FreeBSD.org) Message-Id: <201903052356.x25Nuf9H019510@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: markj set sender to markj@FreeBSD.org using -f From: Mark Johnston Date: Tue, 5 Mar 2019 23:56:41 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r344827 - 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: 344827 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 5E4CD8EF29 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)[-1.000,0]; NEURAL_HAM_SHORT(-0.95)[-0.953,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US]; NEURAL_HAM_LONG(-1.00)[-1.000,0] 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: Tue, 05 Mar 2019 23:56:41 -0000 Author: markj Date: Tue Mar 5 23:56:40 2019 New Revision: 344827 URL: https://svnweb.freebsd.org/changeset/base/344827 Log: Add pmap_get_tables() for riscv. This mirrors the arm64 implementation and is for use in the minidump code. Submitted by: Mitchell Horne Differential Revision: https://reviews.freebsd.org/D18321 Modified: head/sys/riscv/riscv/pmap.c Modified: head/sys/riscv/riscv/pmap.c ============================================================================== --- head/sys/riscv/riscv/pmap.c Tue Mar 5 22:55:33 2019 (r344826) +++ head/sys/riscv/riscv/pmap.c Tue Mar 5 23:56:40 2019 (r344827) @@ -4438,3 +4438,40 @@ pmap_is_valid_memattr(pmap_t pmap __unused, vm_memattr return (mode >= VM_MEMATTR_DEVICE && mode <= VM_MEMATTR_WRITE_BACK); } + +bool +pmap_get_tables(pmap_t pmap, vm_offset_t va, pd_entry_t **l1, pd_entry_t **l2, + pt_entry_t **l3) +{ + pd_entry_t *l1p, *l2p; + + /* Get l1 directory entry. */ + l1p = pmap_l1(pmap, va); + *l1 = l1p; + + if (l1p == NULL || (pmap_load(l1p) & PTE_V) == 0) + return (false); + + if ((pmap_load(l1p) & PTE_RX) != 0) { + *l2 = NULL; + *l3 = NULL; + return (true); + } + + /* Get l2 directory entry. */ + l2p = pmap_l1_to_l2(l1p, va); + *l2 = l2p; + + if (l2p == NULL || (pmap_load(l2p) & PTE_V) == 0) + return (false); + + if ((pmap_load(l2p) & PTE_RX) != 0) { + *l3 = NULL; + return (true); + } + + /* Get l3 page table entry. */ + *l3 = pmap_l2_to_l3(l2p, va); + + return (true); +}