From owner-dev-commits-src-all@freebsd.org Thu Jun 3 19:47:41 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 3271A63FF2F; Thu, 3 Jun 2021 19:47:41 +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 4FwxJD63qKz4jMD; Thu, 3 Jun 2021 19:47:40 +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 A48AB7DEE; Thu, 3 Jun 2021 19:47:40 +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 153JleAm021860; Thu, 3 Jun 2021 19:47:40 GMT (envelope-from git@gitrepo.freebsd.org) Received: (from git@localhost) by gitrepo.freebsd.org (8.16.1/8.16.1/Submit) id 153JlerA021859; Thu, 3 Jun 2021 19:47:40 GMT (envelope-from git) Date: Thu, 3 Jun 2021 19:47:40 GMT Message-Id: <202106031947.153JlerA021859@gitrepo.freebsd.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org From: Konstantin Belousov Subject: git: 37f780d3e0a2 - main - Disable x2APIC for SandyBridge laptops with Samsung BIOS MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Git-Committer: kib X-Git-Repository: src X-Git-Refname: refs/heads/main X-Git-Reftype: branch X-Git-Commit: 37f780d3e0a2e8e4c64c526b6e7dc77ff6b91057 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: Thu, 03 Jun 2021 19:47:41 -0000 The branch main has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=37f780d3e0a2e8e4c64c526b6e7dc77ff6b91057 commit 37f780d3e0a2e8e4c64c526b6e7dc77ff6b91057 Author: Konstantin Belousov AuthorDate: 2021-06-02 22:29:07 +0000 Commit: Konstantin Belousov CommitDate: 2021-06-03 19:47:31 +0000 Disable x2APIC for SandyBridge laptops with Samsung BIOS From the PR: Almost always, my Samsung RF511 laptop could not boot with x2APIC enabled in the kernel. It froze during SMP initialization, shortly after "ACPI APIC Table: " was printed to the console. When the kernel is instructed not to use x2APIC, the system boots correctly. PR: 256389 Submitted by: David Sebek Reviewed by: markj MFC after: 1 week Differential revision: https://reviews.freebsd.org/D30624 --- sys/x86/acpica/madt.c | 1 + 1 file changed, 1 insertion(+) diff --git a/sys/x86/acpica/madt.c b/sys/x86/acpica/madt.c index e041296d4ca5..8e343a6619f3 100644 --- a/sys/x86/acpica/madt.c +++ b/sys/x86/acpica/madt.c @@ -131,6 +131,7 @@ madt_probe_cpus(void) static const char *x2apic_sandy_dis[] = { "LENOVO", "ASUSTeK Computer Inc.", + "SAMSUNG ELECTRONICS CO., LTD.", }; /*