From owner-svn-src-head@freebsd.org Sat Mar 2 20:59:19 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 9E11F150EEF0; Sat, 2 Mar 2019 20:59:19 +0000 (UTC) (envelope-from jhibbits@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 45220830A0; Sat, 2 Mar 2019 20:59:19 +0000 (UTC) (envelope-from jhibbits@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 35FC0A27B; Sat, 2 Mar 2019 20:59:19 +0000 (UTC) (envelope-from jhibbits@FreeBSD.org) Received: from repo.freebsd.org ([127.0.1.37]) by repo.freebsd.org (8.15.2/8.15.2) with ESMTP id x22KxJ1b017839; Sat, 2 Mar 2019 20:59:19 GMT (envelope-from jhibbits@FreeBSD.org) Received: (from jhibbits@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x22KxIDJ017837; Sat, 2 Mar 2019 20:59:18 GMT (envelope-from jhibbits@FreeBSD.org) Message-Id: <201903022059.x22KxIDJ017837@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: jhibbits set sender to jhibbits@FreeBSD.org using -f From: Justin Hibbits Date: Sat, 2 Mar 2019 20:59:18 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r344729 - head/sys/powerpc/booke X-SVN-Group: head X-SVN-Commit-Author: jhibbits X-SVN-Commit-Paths: head/sys/powerpc/booke X-SVN-Commit-Revision: 344729 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 45220830A0 X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.94 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.999,0]; NEURAL_HAM_SHORT(-0.94)[-0.940,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US]; NEURAL_HAM_LONG(-1.00)[-0.999,0] 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: Sat, 02 Mar 2019 20:59:19 -0000 Author: jhibbits Date: Sat Mar 2 20:59:18 2019 New Revision: 344729 URL: https://svnweb.freebsd.org/changeset/base/344729 Log: powerpc/booke: Depessimize MAS register updates even more Remove isyncs between MAS register updates in the TLB miss handler, since it's only needed before the TLB update instructions. Modified: head/sys/powerpc/booke/locore.S head/sys/powerpc/booke/trap_subr.S Modified: head/sys/powerpc/booke/locore.S ============================================================================== --- head/sys/powerpc/booke/locore.S Sat Mar 2 20:58:51 2019 (r344728) +++ head/sys/powerpc/booke/locore.S Sat Mar 2 20:59:18 2019 (r344729) @@ -252,6 +252,7 @@ __start: isync bl zero_mas7 bl zero_mas8 + isync tlbwe isync msync @@ -505,6 +506,7 @@ bp_kernload: isync bl zero_mas7 bl zero_mas8 + isync tlbwe isync msync @@ -695,6 +697,7 @@ tlb1_temp_mapping_as1: bl zero_mas7 bl zero_mas8 mtlr %r3 + isync tlbwe isync msync @@ -742,7 +745,6 @@ zero_mas7: li %r20, 0 mtspr SPR_MAS7, %r20 - isync 1: blr @@ -759,7 +761,6 @@ zero_mas8: 1: li %r20, 0 mtspr SPR_MAS8, %r20 - isync blr #endif Modified: head/sys/powerpc/booke/trap_subr.S ============================================================================== --- head/sys/powerpc/booke/trap_subr.S Sat Mar 2 20:58:51 2019 (r344728) +++ head/sys/powerpc/booke/trap_subr.S Sat Mar 2 20:59:18 2019 (r344729) @@ -761,17 +761,14 @@ search_failed: /* Load MAS registers. */ mtspr SPR_MAS0, %r29 - isync mtspr SPR_MAS1, %r28 - isync mtspr SPR_MAS2, %r27 - isync mtspr SPR_MAS3, %r23 - isync bl zero_mas7 bl zero_mas8 + isync tlbwe msync isync @@ -906,20 +903,16 @@ tlb_fill_entry: /* Load MAS registers. */ mtspr SPR_MAS0, %r29 - isync mtspr SPR_MAS1, %r28 - isync mtspr SPR_MAS2, %r27 - isync mtspr SPR_MAS3, %r22 - isync mtspr SPR_MAS7, %r23 - isync mflr %r21 bl zero_mas8 mtlr %r21 + isync tlbwe isync msync