Date: Thu, 3 Jun 2021 19:47:40 GMT From: Konstantin Belousov <kib@FreeBSD.org> To: src-committers@FreeBSD.org, dev-commits-src-all@FreeBSD.org, dev-commits-src-main@FreeBSD.org Subject: git: 37f780d3e0a2 - main - Disable x2APIC for SandyBridge laptops with Samsung BIOS Message-ID: <202106031947.153JlerA021859@gitrepo.freebsd.org>
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The branch main has been updated by kib: URL: https://cgit.FreeBSD.org/src/commit/?id=37f780d3e0a2e8e4c64c526b6e7dc77ff6b91057 commit 37f780d3e0a2e8e4c64c526b6e7dc77ff6b91057 Author: Konstantin Belousov <kib@FreeBSD.org> AuthorDate: 2021-06-02 22:29:07 +0000 Commit: Konstantin Belousov <kib@FreeBSD.org> 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: <SECCSD LH43STAR>" was printed to the console. When the kernel is instructed not to use x2APIC, the system boots correctly. PR: 256389 Submitted by: David Sebek <dasebek@gmail.com> 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.", }; /*
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