From owner-dev-commits-src-all@freebsd.org Wed Aug 11 15:17:55 2021 Return-Path: Delivered-To: dev-commits-src-all@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 28B866557E6; Wed, 11 Aug 2021 15:17:55 +0000 (UTC) (envelope-from git@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 "R3" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 4GlD370MnCz3L8l; Wed, 11 Aug 2021 15:17:55 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org (gitrepo.freebsd.org [IPv6:2610:1c1:1:6068::e6a:5]) (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 did not present a certificate) by mxrelay.nyi.freebsd.org (Postfix) with ESMTPS id E954811C0C; Wed, 11 Aug 2021 15:17:54 +0000 (UTC) (envelope-from git@FreeBSD.org) Received: from gitrepo.freebsd.org ([127.0.1.44]) by gitrepo.freebsd.org (8.16.1/8.16.1) with ESMTP id 17BFHs98051591; Wed, 11 Aug 2021 15:17:54 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 17BFHsGw051590; Wed, 11 Aug 2021 15:17:54 GMT (envelope-from git) Date: Wed, 11 Aug 2021 15:17:54 GMT Message-Id: <202108111517.17BFHsGw051590@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Andrew Turner Subject: git: 6b22840ed0e8 - main - Read the arm64 midr register earlier MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: andrew X-Git-Repository: src X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: 6b22840ed0e8f9ceb34465987b8469a43ebb4582 Auto-Submitted: auto-generated X-BeenThere: dev-commits-src-all@freebsd.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Commit messages for all branches of the src repository List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 11 Aug 2021 15:17:55 -0000 The branch main has been updated by andrew: URL: https://cgit.FreeBSD.org/src/commit/?id=6b22840ed0e8f9ceb34465987b8469a43ebb4582 commit 6b22840ed0e8f9ceb34465987b8469a43ebb4582 Author: Andrew Turner AuthorDate: 2021-08-11 15:01:25 +0000 Commit: Andrew Turner CommitDate: 2021-08-11 15:15:55 +0000 Read the arm64 midr register earlier We use the midr_el1 register to decode which CPU type we are booting from. Read it on the secondary CPUs before waiting for the boot CPU to release us as it will need to use it before the release. Sponsored by: The FreeBSD Foundation --- sys/arm64/arm64/mp_machdep.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/sys/arm64/arm64/mp_machdep.c b/sys/arm64/arm64/mp_machdep.c index 63715c64641c..c5dd3312fdba 100644 --- a/sys/arm64/arm64/mp_machdep.c +++ b/sys/arm64/arm64/mp_machdep.c @@ -238,6 +238,7 @@ init_secondary(uint64_t cpu) * We need this before signalling the CPU is ready to * let the boot CPU use the results. */ + pcpup->pc_midr = get_midr(); identify_cpu(cpu); /* Ensure the stores in identify_cpu have completed */ @@ -248,8 +249,6 @@ init_secondary(uint64_t cpu) while (!atomic_load_int(&aps_ready)) __asm __volatile("wfe"); - pcpup->pc_midr = get_midr(); - /* Initialize curthread */ KASSERT(PCPU_GET(idlethread) != NULL, ("no idle thread")); pcpup->pc_curthread = pcpup->pc_idlethread;