From: Michael Holzheu <[email protected]>
[S390] New get_cpu_id() inline assembly
Replace two stidp inline assemblies with one global implementation.
Signed-off-by: Michael Holzheu <[email protected]>
Signed-off-by: Martin Schwidefsky <[email protected]>
---
arch/s390/kernel/early.c | 2 +-
arch/s390/kernel/setup.c | 2 +-
include/asm-s390/processor.h | 5 +++++
3 files changed, 7 insertions(+), 2 deletions(-)
diff -urpN linux-2.6/arch/s390/kernel/early.c linux-2.6-patched/arch/s390/kernel/early.c
--- linux-2.6/arch/s390/kernel/early.c 2007-02-21 10:47:06.000000000 +0100
+++ linux-2.6-patched/arch/s390/kernel/early.c 2007-02-21 10:47:29.000000000 +0100
@@ -129,7 +129,7 @@ static noinline __init void detect_machi
{
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 -urpN linux-2.6/arch/s390/kernel/setup.c linux-2.6-patched/arch/s390/kernel/setup.c
--- linux-2.6/arch/s390/kernel/setup.c 2007-02-21 10:47:06.000000000 +0100
+++ linux-2.6-patched/arch/s390/kernel/setup.c 2007-02-21 10:47:29.000000000 +0100
@@ -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 -urpN linux-2.6/include/asm-s390/processor.h linux-2.6-patched/include/asm-s390/processor.h
--- linux-2.6/include/asm-s390/processor.h 2007-02-21 10:47:14.000000000 +0100
+++ linux-2.6-patched/include/asm-s390/processor.h 2007-02-21 10:47:29.000000000 +0100
@@ -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;
--
blue skies, IBM Deutschland Entwicklung GmbH
Martin Vorsitzender des Aufsichtsrats: Johann Weihen
Geschäftsführung: Herbert Kircher
Martin Schwidefsky Sitz der Gesellschaft: Böblingen
Linux on zSeries Registergericht: Amtsgericht Stuttgart,
Development HRB 243294
"Reality continues to ruin my life." - Calvin.
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