From owner-svn-src-stable@freebsd.org Tue Jun 4 15:33:53 2019 Return-Path: Delivered-To: svn-src-stable@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 9689D15B4BA9; Tue, 4 Jun 2019 15:33:53 +0000 (UTC) (envelope-from br@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 354896E9E2; Tue, 4 Jun 2019 15:33:53 +0000 (UTC) (envelope-from br@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 0D5F31F7A5; Tue, 4 Jun 2019 15:33:53 +0000 (UTC) (envelope-from br@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x54FXqpu038328; Tue, 4 Jun 2019 15:33:52 GMT (envelope-from br@FreeBSD.org) Received: (from br@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x54FXqxB038327; Tue, 4 Jun 2019 15:33:52 GMT (envelope-from br@FreeBSD.org) Message-Id: <201906041533.x54FXqxB038327@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: br set sender to br@FreeBSD.org using -f From: Ruslan Bukin Date: Tue, 4 Jun 2019 15:33:52 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org Subject: svn commit: r348622 - stable/12/sys/riscv/riscv X-SVN-Group: stable-12 X-SVN-Commit-Author: br X-SVN-Commit-Paths: stable/12/sys/riscv/riscv X-SVN-Commit-Revision: 348622 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 354896E9E2 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.97 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-1.00)[-1.000,0]; NEURAL_HAM_SHORT(-0.97)[-0.970,0]; NEURAL_HAM_LONG(-1.00)[-1.000,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US] X-BeenThere: svn-src-stable@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: SVN commit messages for all the -stable branches of the src tree List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 04 Jun 2019 15:33:53 -0000 Author: br Date: Tue Jun 4 15:33:52 2019 New Revision: 348622 URL: https://svnweb.freebsd.org/changeset/base/348622 Log: MFC r347226: Disable interrupts first and then set spinlock_count to 1. Otherwise interrupt can be generated just after setting spinlock_count and before disabling interrupts. Sponsored by: DARPA, AFRL Modified: stable/12/sys/riscv/riscv/machdep.c Modified: stable/12/sys/riscv/riscv/machdep.c ============================================================================== --- stable/12/sys/riscv/riscv/machdep.c Tue Jun 4 15:32:56 2019 (r348621) +++ stable/12/sys/riscv/riscv/machdep.c Tue Jun 4 15:33:52 2019 (r348622) @@ -460,11 +460,13 @@ void spinlock_enter(void) { struct thread *td; + register_t reg; td = curthread; if (td->td_md.md_spinlock_count == 0) { + reg = intr_disable(); td->td_md.md_spinlock_count = 1; - td->td_md.md_saved_sstatus_ie = intr_disable(); + td->td_md.md_saved_sstatus_ie = reg; } else td->td_md.md_spinlock_count++; critical_enter();