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Date: Fri, 6 Jun 2008 03:28:13 +0100 (BST)
From: "Maciej W. Rozycki" <macro@...ux-mips.org>
To: Ingo Molnar <mingo@...e.hu>
cc: Thomas Gleixner <tglx@...utronix.de>,
"H. Peter Anvin" <hpa@...or.com>, x86@...nel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH 5/5] x86: APIC/SMP: Downgrade the NMI watchdog for "noapic"
If configured to use the I/O APIC, the NMI watchdog is deemed to fail if
the chip has been deactivated as a result of "noapic". Downgrade to the
local APIC watchdog similarly to what is done for the UP case.
Signed-off-by: Maciej W. Rozycki <macro@...ux-mips.org>
---
patch-2.6.26-rc1-20080505-noapic-watchdog-0
diff -up --recursive --new-file linux-2.6.26-rc1-20080505.macro/include/asm-x86/mach-default/smpboot_hooks.h linux-2.6.26-rc1-20080505/include/asm-x86/mach-default/smpboot_hooks.h
--- linux-2.6.26-rc1-20080505.macro/include/asm-x86/mach-default/smpboot_hooks.h 2008-05-05 02:55:57.000000000 +0000
+++ linux-2.6.26-rc1-20080505/include/asm-x86/mach-default/smpboot_hooks.h 2008-06-05 22:11:30.000000000 +0000
@@ -41,8 +41,10 @@ static inline void __init smpboot_setup_
*/
if (!skip_ioapic_setup && nr_ioapics)
setup_IO_APIC();
- else
+ else {
nr_ioapics = 0;
+ localise_nmi_watchdog();
+ }
}
static inline void smpboot_clear_io_apic(void)
--
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