From owner-svn-src-head@freebsd.org Tue Dec 11 02:03:01 2018 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 5AA2E1311304; Tue, 11 Dec 2018 02:03:01 +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 TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (Client CN "mxrelay.nyi.freebsd.org", Issuer "Let's Encrypt Authority X3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id F18687BBB3; Tue, 11 Dec 2018 02:03:00 +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 D269528818; Tue, 11 Dec 2018 02:03:00 +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 wBB230hB021828; Tue, 11 Dec 2018 02:03:00 GMT (envelope-from jhibbits@FreeBSD.org) Received: (from jhibbits@localhost) by repo.freebsd.org (8.15.2/8.15.2/Submit) id wBB230Mo021827; Tue, 11 Dec 2018 02:03:00 GMT (envelope-from jhibbits@FreeBSD.org) Message-Id: <201812110203.wBB230Mo021827@repo.freebsd.org> X-Authentication-Warning: repo.freebsd.org: jhibbits set sender to jhibbits@FreeBSD.org using -f From: Justin Hibbits Date: Tue, 11 Dec 2018 02:03:00 +0000 (UTC) To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r341805 - 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: 341805 X-SVN-Commit-Repository: base MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: F18687BBB3 X-Spamd-Result: default: False [-2.98 / 15.00]; local_wl_from(0.00)[FreeBSD.org]; NEURAL_HAM_MEDIUM(-1.00)[-0.998,0]; NEURAL_HAM_SHORT(-0.98)[-0.979,0]; NEURAL_HAM_LONG(-1.00)[-0.998,0]; ASN(0.00)[asn:11403, ipnet:2610:1c1:1::/48, country:US] X-Rspamd-Server: mx1.freebsd.org 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: Tue, 11 Dec 2018 02:03:01 -0000 Author: jhibbits Date: Tue Dec 11 02:03:00 2018 New Revision: 341805 URL: https://svnweb.freebsd.org/changeset/base/341805 Log: powerpc/booke: Don't get and use the load offset for TOC on APs The code was a near exact copy of the code in startup, but it doesn't need the complexity since the kernel is already relocated. With VM_MIN_KERNEL_ADDRESS as currently set to KERNBASE, this doesn't cause a problem, because it's a zero offset. However, when KERNBASE is changed to a physical load address, it then has a non-zero offset, and ends up with an invalid stack pointer, causing the AP to hang. Modified: head/sys/powerpc/booke/locore.S Modified: head/sys/powerpc/booke/locore.S ============================================================================== --- head/sys/powerpc/booke/locore.S Tue Dec 11 01:49:06 2018 (r341804) +++ head/sys/powerpc/booke/locore.S Tue Dec 11 02:03:00 2018 (r341805) @@ -549,14 +549,9 @@ bp_kernload: add %r2,%r1,%r2 mtspr SPR_SPRG8, %r2 - /* Get load offset */ - ld %r31,-0x8000(%r2) /* First TOC entry is TOC base */ - subf %r31,%r31,%r2 /* Subtract from real TOC base to get base */ - /* Set up the stack pointer */ ld %r1,TOC_REF(tmpstack)(%r2) addi %r1,%r1,TMPSTACKSZ-96 - add %r1,%r1,%r31 #else /* * Setup a temporary stack