From: Michael Holzheu <holzheu@de.ibm.com>
Date: Wed, 21 Feb 2007 09:55:18 +0000 (+0100)
Subject: [S390] New get_cpu_id() inline assembly
X-Git-Tag: v2.6.21-rc2~74
X-Git-Url: http://git.rot13.org/?a=commitdiff_plain;h=72960a02c270950253126ee8b339afd400f55273;p=powerpc.git

[S390] New get_cpu_id() inline assembly

Replace two stidp inline assemblies with one global implementation.

Signed-off-by: Michael Holzheu <holzheu@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
---

diff --git a/arch/s390/kernel/early.c b/arch/s390/kernel/early.c
index e518dd53ef..011e8c7acc 100644
--- a/arch/s390/kernel/early.c
+++ b/arch/s390/kernel/early.c
@@ -129,7 +129,7 @@ static noinline __init void detect_machine_type(void)
 {
 	struct cpuinfo_S390 *cpuinfo = &S390_lowcore.cpu_data;
 
-	asm volatile("stidp %0" : "=m" (S390_lowcore.cpu_data.cpu_id));
+	get_cpu_id(&S390_lowcore.cpu_data.cpu_id);
 
 	/* Running under z/VM ? */
 	if (cpuinfo->cpu_id.version == 0xff)
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index 50c5210fbc..49567d8cd9 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -106,7 +106,7 @@ void __devinit cpu_init (void)
         /*
          * Store processor id in lowcore (used e.g. in timer_interrupt)
          */
-	asm volatile("stidp %0": "=m" (S390_lowcore.cpu_data.cpu_id));
+	get_cpu_id(&S390_lowcore.cpu_data.cpu_id);
         S390_lowcore.cpu_data.cpu_addr = addr;
 
         /*
diff --git a/include/asm-s390/processor.h b/include/asm-s390/processor.h
index 4c1b739403..33b80ced4b 100644
--- a/include/asm-s390/processor.h
+++ b/include/asm-s390/processor.h
@@ -36,6 +36,11 @@ typedef struct
         unsigned int unused  : 16;
 } __attribute__ ((packed)) cpuid_t;
 
+static inline void get_cpu_id(cpuid_t *ptr)
+{
+	asm volatile("stidp 0(%1)" : "=m" (*ptr) : "a" (ptr));
+}
+
 struct cpuinfo_S390
 {
         cpuid_t  cpu_id;