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kernel-2.6.18-238.el5.src.rpm

From: Matthew Garrett <mjg@redhat.com>
Date: Fri, 5 Mar 2010 16:28:58 -0500
Subject: [acpi] tell platformthat we support fixed hw T-states
Message-id: <1267806538-12806-1-git-send-email-mjg@redhat.com>
Patchwork-id: 23504
O-Subject: [PATCH] RHEL 5.5: Tell the platform that we support fixed-hardware T
	states
Bugzilla: 569590
RH-Acked-by: Jarod Wilson <jarod@redhat.com>
RH-Acked-by: John Feeney <jfeeney@redhat.com>

Bugzilla: 569590

The backport of ACPI 3.0 T-state support failed to add the flag that
informs the platform that this support is available. Pass this to the
platform in case it makes T-state initialisation dependent upon it.

diff --git a/arch/i386/kernel/acpi/processor.c b/arch/i386/kernel/acpi/processor.c
index b54fded..d3f21b3 100644
--- a/arch/i386/kernel/acpi/processor.c
+++ b/arch/i386/kernel/acpi/processor.c
@@ -49,6 +49,9 @@ static void init_intel_pdc(struct acpi_processor *pr, struct cpuinfo_x86 *c)
 	if (cpu_has(c, X86_FEATURE_EST))
 		buf[2] |= ACPI_PDC_EST_CAPABILITY_SWSMP;
 
+        if (cpu_has(c, X86_FEATURE_ACPI))
+                buf[2] |= ACPI_PDC_T_FFH;
+
 	obj->type = ACPI_TYPE_BUFFER;
 	obj->buffer.length = 12;
 	obj->buffer.pointer = (u8 *) buf;