From owner-svn-src-head@freebsd.org Wed Jul 1 19:12:48 2020 Return-Path: Delivered-To: svn-src-head@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 11E0A359BB8; Wed, 1 Jul 2020 19:12:48 +0000 (UTC) (envelope-from kp@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 "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 49xrTW6j7kz4tYD; Wed, 1 Jul 2020 19:12:47 +0000 (UTC) (envelope-from kp@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 C9727DFEE; Wed, 1 Jul 2020 19:12:47 +0000 (UTC) (envelope-from kp@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id 061JCltg032864; Wed, 1 Jul 2020 19:12:47 GMT (envelope-from kp@FreeBSD.org) Received: (from kp@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id 061JCl7g032863; Wed, 1 Jul 2020 19:12:47 GMT (envelope-from kp@FreeBSD.org) Message-Id: <202007011912.061JCl7g032863@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: kp set sender to kp@FreeBSD.org using -f From: Kristof Provost Date: Wed, 1 Jul 2020 19:12:47 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r362852 - head/sys/riscv/riscv X-SVN-Group: head X-SVN-Commit-Author: kp X-SVN-Commit-Paths: head/sys/riscv/riscv X-SVN-Commit-Revision: 362852 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.33 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: Wed, 01 Jul 2020 19:12:48 -0000 Author: kp Date: Wed Jul 1 19:12:47 2020 New Revision: 362852 URL: https://svnweb.freebsd.org/changeset/base/362852 Log: riscv locore.S: load constant prior to loop A very minor micro-optimization; t0 is not clobbered between the loop top and bottom and there appear to be no other branches to this label. Submitted by: Nathaniel Filardo Reviewed by: mhorne Differential Revision: https://reviews.freebsd.org/D25524 Modified: head/sys/riscv/riscv/locore.S Modified: head/sys/riscv/riscv/locore.S ============================================================================== --- head/sys/riscv/riscv/locore.S Wed Jul 1 19:11:02 2020 (r362851) +++ head/sys/riscv/riscv/locore.S Wed Jul 1 19:12:47 2020 (r362852) @@ -139,8 +139,8 @@ pagetables: li t2, 512 /* Build 512 entries */ add t3, t4, t2 li t5, 0 -1: li t0, (PTE_KERN | PTE_X) +1: slli t2, t4, PTE_PPN1_S /* << PTE_PPN1_S */ or t5, t0, t2 sd t5, (s1) /* Store PTE entry to position */