linux-kernel - [PATCH] x86, uv: More Westmere support on SGI UV

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Message-ID: <20101028224132.GB15804@sgi.com>
Date:	Thu, 28 Oct 2010 17:41:32 -0500
From:	Russ Anderson <rja@....com>
To:	linux-kernel@...r.kernel.org
Cc:	"H. Peter Anvin" <hpa@...or.com>, mingo@...hat.com,
	tglx@...utronix.de, Jack Steiner <steiner@....com>,
	Russ Anderson <rja@....com>
Subject: [PATCH] x86, uv: More Westmere support on SGI UV

x86, uv: More Westmere support on SGI UV

Enable Westmere support on all apic modes on SGI UV.

Signed-off-by: Russ Anderson <rja@....com>

---

 arch/x86/kernel/apic/x2apic_uv_x.c |    7 +++----
 1 file changed, 3 insertions(+), 4 deletions(-)

Index: linux/arch/x86/kernel/apic/x2apic_uv_x.c
===================================================================
--- linux.orig/arch/x86/kernel/apic/x2apic_uv_x.c	2010-10-28 16:39:23.771774569 -0500
+++ linux/arch/x86/kernel/apic/x2apic_uv_x.c	2010-10-28 16:45:52.295342718 -0500
@@ -71,7 +71,7 @@ static int early_get_nodeid(void)
 	return node_id.s.node_id;
 }
 
-static int __init early_get_apic_pnode_shift(void)
+static void __init early_get_apic_pnode_shift(void)
 {
 	unsigned long *mmr;
 
@@ -83,8 +83,6 @@ static int __init early_get_apic_pnode_s
 		 * Old bios, use default value
 		 */
 		uvh_apicid.s.pnode_shift = UV_APIC_PNODE_SHIFT;
-
-	return uvh_apicid.s.pnode_shift;
 }
 
 static int __init uv_acpi_madt_oem_check(char *oem_id, char *oem_table_id)
@@ -93,6 +91,7 @@ static int __init uv_acpi_madt_oem_check
 
 	if (!strcmp(oem_id, "SGI")) {
 		nodeid = early_get_nodeid();
+		early_get_apic_pnode_shift();
 		x86_platform.is_untracked_pat_range =  uv_is_untracked_pat_range;
 		x86_platform.nmi_init = uv_nmi_init;
 		if (!strcmp(oem_table_id, "UVL"))
@@ -101,7 +100,7 @@ static int __init uv_acpi_madt_oem_check
 			uv_system_type = UV_X2APIC;
 		else if (!strcmp(oem_table_id, "UVH")) {
 			__get_cpu_var(x2apic_extra_bits) =
-				nodeid << (early_get_apic_pnode_shift() - 1);
+				nodeid << (uvh_apicid.s.pnode_shift - 1);
 			uv_system_type = UV_NON_UNIQUE_APIC;
 			return 1;
 		}
-- 
Russ Anderson, OS RAS/Partitioning Project Lead  
SGI - Silicon Graphics Inc          rja@....com
--
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