Attachment 310082 Details for Bug 452587 – fix "buggy BIOS check" when CPUs are hot removed

[patch] fix "buggy BIOS check" when CPUs are hot removed

buggy-bios-check.patch (text/plain), 1.51 KB, created by Alok Kataria on 2008-06-23 22:06:18 UTC

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Creator: Alok Kataria

Created: 2008-06-23 22:06:18 UTC

Size: 1.51 KB

patch

obsolete

>VMware, Inc. is providing the following patch to you under the terms of the GPL
>version 2 and no later version. This patch is provided as is, with no
>warranties or support. VMware disclaims all liability in connection with
>the use/inability to use this patch. Any use of the attached is
>considered acceptance of the above.
>
>commit ba62b077871a5255e271f4fdae57167651839277
>Author: Alok Kataria <akataria@vmware.com>
>Date:   Tue Apr 8 17:41:56 2008 -0700
>
>    acpi: fix "buggy BIOS check" when CPUs are hot removed
>    
>    Fixes a BUG in ACPI hotplugging.
>    
>    processor_device_array[pr->id] needs to be set to NULL when removing a CPU.
>    Else the "buggy BIOS check" in acpi_processor_start mistakenly fires when a
>    CPU is removed from the system and then later re-added.
>    
>    Signed-off-by: Alok N Kataria <akataria@vmware.com>
>    Signed-off-by: Dan Arai <arai@vmware.com>
>    Cc: Len Brown <lenb@kernel.org>
>    Cc: <stable@kernel.org>
>    Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
>    Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
>
>Index: linux-2.6.18-92.1.1/drivers/acpi/processor_core.c
>===================================================================
>--- linux-2.6.18-92.1.1.orig/drivers/acpi/processor_core.c	2006-09-19 20:42:06.000000000 -0700
>+++ linux-2.6.18-92.1.1/drivers/acpi/processor_core.c	2008-06-23 11:47:32.000000000 -0700
>@@ -657,7 +657,7 @@
> 	acpi_processor_remove_fs(device);
> 
> 	processors[pr->id] = NULL;
>-
>+	processor_device_array[pr->id] = NULL;
> 	kfree(pr);
> 
> 	return 0;

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Attachments on bug 452587: 310080 | 310081 | 310082