linux-kernel - [PATCH] x86: move init_cpu_to_node after get_smp

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <200807021853.44492.yhlu.kernel@gmail.com>
Date:	Wed, 2 Jul 2008 18:53:44 -0700
From:	Yinghai Lu <yhlu.kernel@...il.com>
To:	Ingo Molnar <mingo@...e.hu>, Thomas Gleixner <tglx@...utronix.de>,
	"H. Peter Anvin" <hpa@...or.com>
Cc:	LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH] x86: move init_cpu_to_node after get_smp_config


when acpi=off, cpu_to_apicid is ready after get_smp_config
so need to move init_cpu_to_node after it.

otherwise, we will get wrong cpu->node mapping. and it will rely on
amd_detect_cmp to correct it. but that is too late.
setup_per_cpu_data is already called before that.
we will get per_cpu_data on wrong node.

Signed-off-by: Yinghai Lu <yhlu.kernel@...il.com>

---
 arch/x86/kernel/setup.c |    8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

Index: linux-2.6/arch/x86/kernel/setup.c
===================================================================
--- linux-2.6.orig/arch/x86/kernel/setup.c
+++ linux-2.6/arch/x86/kernel/setup.c
@@ -780,10 +780,6 @@ void __init setup_arch(char **cmdline_p)
 	 */
 	acpi_boot_init();
 
-#ifdef CONFIG_X86_64
-	init_cpu_to_node();
-#endif
-
 #if defined(CONFIG_X86_MPPARSE) || defined(CONFIG_X86_VISWS)
 	/*
 	 * get boot-time SMP configuration:
@@ -792,6 +788,10 @@ void __init setup_arch(char **cmdline_p)
 		get_smp_config();
 #endif
 
+#ifdef CONFIG_X86_64
+	init_cpu_to_node();
+#endif
+
 	init_apic_mappings();
 	ioapic_init_mappings();
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/