From 9ed1456eff73d1a268eabb84176dd2a2107bf2d7 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Ky=C3=B6sti=20M=C3=A4lkki?= Date: Wed, 27 Jun 2012 16:14:49 +0300 Subject: Intel CPUs: execute microcode update only once per core MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Early HT-enabled CPUs do not serialize microcode updates within a core. Solve this by running microcode updates on the thread with the smallest lapic ID of a core only. Also set MTRRs once per core only. Change-Id: I6a3cc9ecec2d8e0caed29605a9b19ec35a817620 Signed-off-by: Kyösti Mälkki Reviewed-on: http://review.coreboot.org/1142 Tested-by: build bot (Jenkins) Reviewed-by: Sven Schnelle Reviewed-by: Stefan Reinauer --- src/include/cpu/intel/hyperthreading.h | 1 + 1 file changed, 1 insertion(+) (limited to 'src/include/cpu/intel') diff --git a/src/include/cpu/intel/hyperthreading.h b/src/include/cpu/intel/hyperthreading.h index 0a1461ceb5..c84a6a7a4a 100644 --- a/src/include/cpu/intel/hyperthreading.h +++ b/src/include/cpu/intel/hyperthreading.h @@ -3,5 +3,6 @@ struct device; void intel_sibling_init(struct device *cpu); +int intel_ht_sibling(void); #endif /* CPU_INTEL_HYPERTHREADING_H */ -- cgit v1.2.3