Date: Fri, 06 Feb 2015 18:20:54 +0000 From: bugzilla-noreply@freebsd.org To: freebsd-bugs@FreeBSD.org Subject: [Bug 196542] System stops booting with "ACPI APIC Table: <INTEL DENLOW>" Message-ID: <bug-196542-8-qTrRu4MPe2@https.bugs.freebsd.org/bugzilla/> In-Reply-To: <bug-196542-8@https.bugs.freebsd.org/bugzilla/> References: <bug-196542-8@https.bugs.freebsd.org/bugzilla/>
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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=196542 --- Comment #25 from commit-hook@freebsd.org --- A commit references this bug: Author: jhb Date: Fri Feb 6 18:20:01 UTC 2015 New revision: 278325 URL: https://svnweb.freebsd.org/changeset/base/278325 Log: Revert the IPI startup sequence to match what is described in the Intel Multiprocessor Specification v1.4. The Intel SDM claims that the INIT IPIs here are invalid, but other systems follow the MP spec instead. While here, fix the IPI wait routine to accept a timeout in microseconds instead of a raw spin count, and don't spin forever during AP startup. Instead, panic if a STARTUP IPI is not delivered after 20 us. PR: 196542 Differential Revision: https://reviews.freebsd.org/D1719 MFC after: 2 weeks Changes: head/sys/amd64/amd64/mp_machdep.c head/sys/i386/i386/mp_machdep.c head/sys/x86/x86/local_apic.c -- You are receiving this mail because: You are the assignee for the bug.
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