From owner-dev-commits-src-branches@freebsd.org Sat May 1 00:39:10 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 0995062E7DD; Sat, 1 May 2021 00:39:10 +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 4FX9NF4b0Tz3pxk; Sat, 1 May 2021 00:39:09 +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 6612F5AFC; Sat, 1 May 2021 00:39:09 +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 1410d9Zl048212; Sat, 1 May 2021 00:39:09 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 1410d9j8048211; Sat, 1 May 2021 00:39:09 GMT (envelope-from git) Date: Sat, 1 May 2021 00:39:09 GMT Message-Id: <202105010039.1410d9j8048211@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: bd19553cb5d2 - stable/12 - amd64 linux64: use x86_clear_dbregs() 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: bd19553cb5d26a4100e3f6cc90e65647ded36b97 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 00:39:10 -0000 The branch stable/12 has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=bd19553cb5d26a4100e3f6cc90e65647ded36b97 commit bd19553cb5d26a4100e3f6cc90e65647ded36b97 Author: Konstantin Belousov AuthorDate: 2021-04-09 23:22:48 +0000 Commit: Konstantin Belousov CommitDate: 2021-05-01 00:38:29 +0000 amd64 linux64: use x86_clear_dbregs() (cherry picked from commit 2f1588474768f61f3a983af207e753bd0340a9e7) --- sys/amd64/linux/linux_sysvec.c | 22 +--------------------- 1 file changed, 1 insertion(+), 21 deletions(-) diff --git a/sys/amd64/linux/linux_sysvec.c b/sys/amd64/linux/linux_sysvec.c index b14b4014a87a..03240acaae1c 100644 --- a/sys/amd64/linux/linux_sysvec.c +++ b/sys/amd64/linux/linux_sysvec.c @@ -424,27 +424,7 @@ linux_exec_setregs(struct thread *td, struct image_params *imgp, u_long stack) regs->tf_gs = _ugssel; regs->tf_flags = TF_HASSEGS; - /* - * Reset the hardware debug registers if they were in use. - * They won't have any meaning for the newly exec'd process. - */ - if (pcb->pcb_flags & PCB_DBREGS) { - pcb->pcb_dr0 = 0; - pcb->pcb_dr1 = 0; - pcb->pcb_dr2 = 0; - pcb->pcb_dr3 = 0; - pcb->pcb_dr6 = 0; - pcb->pcb_dr7 = 0; - if (pcb == curpcb) { - /* - * Clear the debug registers on the running - * CPU, otherwise they will end up affecting - * the next process we switch to. - */ - reset_dbregs(); - } - clear_pcb_flags(pcb, PCB_DBREGS); - } + x86_clear_dbregs(pcb); /* * Drop the FP state if we hold it, so that the process gets a