From owner-dev-commits-src-branches@freebsd.org Sat May 1 00:39:11 2021 Return-Path: Delivered-To: dev-commits-src-branches@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id C8A2B62EAB3; Sat, 1 May 2021 00:39:11 +0000 (UTC) (envelope-from git@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) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256 client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mxrelay.nyi.freebsd.org", Issuer "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4FX9NH4xsPz3pmf; Sat, 1 May 2021 00:39:11 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (Client did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id 96B356016; Sat, 1 May 2021 00:39:11 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.16.1/8.16.1) with ESMTP id 1410dBwj048254; Sat, 1 May 2021 00:39:11 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 1410dBE7048253; Sat, 1 May 2021 00:39:11 GMT (envelope-from git) Date: Sat, 1 May 2021 00:39:11 GMT Message-Id: <202105010039.1410dBE7048253@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-branches@FreeBSD.org From: Konstantin Belousov Subject: git: 71add7877a02 - stable/12 - x86: use x86_clear_dbregs() on fork MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: kib X-Git-Repository: src X-Git-Refname: refs/heads/stable/12 X-Git-Reftype: branch X-Git-Commit: 71add7877a02dffa93883cc1b83542bc540645f4 Auto-Submitted: auto-generated X-BeenThere: dev-commits-src-branches@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Commits to the stable branches of the FreeBSD src repository List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 01 May 2021 00:39:12 -0000 The branch stable/12 has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=71add7877a02dffa93883cc1b83542bc540645f4 commit 71add7877a02dffa93883cc1b83542bc540645f4 Author: Konstantin Belousov AuthorDate: 2021-04-09 23:20:55 +0000 Commit: Konstantin Belousov CommitDate: 2021-05-01 00:38:29 +0000 x86: use x86_clear_dbregs() on fork (cherry picked from commit 290b0d123ae2136ad84b268cd1884b1624d1d37f) --- sys/amd64/amd64/vm_machdep.c | 7 +------ sys/i386/i386/vm_machdep.c | 7 +------ 2 files changed, 2 insertions(+), 12 deletions(-) diff --git a/sys/amd64/amd64/vm_machdep.c b/sys/amd64/amd64/vm_machdep.c index 5b3845e5c68e..da7f58d4fd3c 100644 --- a/sys/amd64/amd64/vm_machdep.c +++ b/sys/amd64/amd64/vm_machdep.c @@ -182,12 +182,7 @@ cpu_fork(struct thread *td1, struct proc *p2, struct thread *td2, int flags) cpu_max_ext_state_size); /* Reset debug registers in the new process */ - pcb2->pcb_dr0 = 0; - pcb2->pcb_dr1 = 0; - pcb2->pcb_dr2 = 0; - pcb2->pcb_dr3 = 0; - pcb2->pcb_dr6 = 0; - pcb2->pcb_dr7 = 0; + x86_clear_dbregs(pcb2); /* Point mdproc and then copy over td1's contents */ mdp2 = &p2->p_md; diff --git a/sys/i386/i386/vm_machdep.c b/sys/i386/i386/vm_machdep.c index c76074f5446d..8f1b0a971f58 100644 --- a/sys/i386/i386/vm_machdep.c +++ b/sys/i386/i386/vm_machdep.c @@ -193,12 +193,7 @@ cpu_fork(struct thread *td1, struct proc *p2, struct thread *td2, int flags) cpu_max_ext_state_size); /* Reset debug registers in the new process */ - pcb2->pcb_dr0 = 0; - pcb2->pcb_dr1 = 0; - pcb2->pcb_dr2 = 0; - pcb2->pcb_dr3 = 0; - pcb2->pcb_dr6 = 0; - pcb2->pcb_dr7 = 0; + x86_clear_dbregs(pcb2); /* Point mdproc and then copy over td1's contents */ mdp2 = &p2->p_md;