From owner-svn-src-all@freebsd.org Wed May 22 02:43:18 2019 Return-Path: Delivered-To: svn-src-all@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 2E256159801E; Wed, 22 May 2019 02:43:18 +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 BF0A88C92F; Wed, 22 May 2019 02:43:17 +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 94A81F1B9; Wed, 22 May 2019 02:43:17 +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 x4M2hHMw009063; Wed, 22 May 2019 02:43:17 GMT (envelope-from jhibbits@FreeBSD.org) Received: (from jhibbits@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id x4M2hH0U009062; Wed, 22 May 2019 02:43:17 GMT (envelope-from jhibbits@FreeBSD.org) Message-Id: <201905220243.x4M2hH0U009062@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: jhibbits set sender to jhibbits@FreeBSD.org using -f From: Justin Hibbits Date: Wed, 22 May 2019 02:43:17 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r348079 - 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: 348079 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: BF0A88C92F X-Spamd-Bar: -- Authentication-Results: mx1.freebsd.org X-Spamd-Result: default: False [-2.95 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.999,0]; NEURAL_HAM_SHORT(-0.95)[-0.954,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US]; NEURAL_HAM_LONG(-1.00)[-1.000,0] X-BeenThere: svn-src-all@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "SVN commit messages for the entire src tree \(except for " user" and " projects" \)" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 22 May 2019 02:43:18 -0000 Author: jhibbits Date: Wed May 22 02:43:17 2019 New Revision: 348079 URL: https://svnweb.freebsd.org/changeset/base/348079 Log: powerpc/booke: Use wrtee instead of msr to restore EE bit The MSR[EE] bit does not require synchronization when changing. This is a trivial micro-optimization, removing the trailing isync from mtmsr(). MFC after: 1 week Modified: head/sys/powerpc/booke/pmap.c Modified: head/sys/powerpc/booke/pmap.c ============================================================================== --- head/sys/powerpc/booke/pmap.c Wed May 22 01:22:33 2019 (r348078) +++ head/sys/powerpc/booke/pmap.c Wed May 22 02:43:17 2019 (r348079) @@ -3916,7 +3916,7 @@ tlb1_read_entry(tlb_entry_t *entry, unsigned int slot) entry->mas7 = 0; break; } - mtmsr(msr); + __asm __volatile("wrtee %0" :: "r"(msr)); entry->virt = entry->mas2 & MAS2_EPN_MASK; entry->phys = ((vm_paddr_t)(entry->mas7 & MAS7_RPN) << 32) | @@ -3991,7 +3991,7 @@ tlb1_write_entry(tlb_entry_t *e, unsigned int idx) msr = mfmsr(); __asm __volatile("wrteei 0"); tlb1_write_entry_int(&args); - mtmsr(msr); + __asm __volatile("wrtee %0" :: "r"(msr)); } } @@ -4390,7 +4390,7 @@ tid_flush(tlbtid_t tid) mtspr(SPR_MAS6, tid << MAS6_SPID0_SHIFT); /* tlbilxpid */ __asm __volatile("isync; .long 0x7c000024; isync; msync"); - mtmsr(msr); + __asm __volatile("wrtee %0" :: "r"(msr)); return; } @@ -4415,7 +4415,7 @@ tid_flush(tlbtid_t tid) mtspr(SPR_MAS1, mas1); __asm __volatile("isync; tlbwe; isync; msync"); } - mtmsr(msr); + __asm __volatile("wrtee %0" :: "r"(msr)); } #ifdef DDB