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authorMartin Schwidefsky <schwidefsky@de.ibm.com>2012-09-06 09:44:59 +0200
committerMartin Schwidefsky <schwidefsky@de.ibm.com>2012-09-10 09:53:52 +0200
commitdb2e1f43e7b2320d0450fe34e5ac4ac4d8c7708d (patch)
treee73d73335870e7a1dd73898d36f246daa30918b9 /arch/s390/kernel/setup.c
parent3368ba25bf387109b24732c1e270c628f20e345d (diff)
s390/hwcaps: do not report high gprs for 31 bit kernel
The bit for high gprs in the AT_HWCAP auxiliary vector field and the highgprs tag in the output of /proc/cpuinfo should not be set for 31 bit kernels. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/setup.c')
-rw-r--r--arch/s390/kernel/setup.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c
index f86c81e13c3..40b57693de3 100644
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@ -974,11 +974,13 @@ static void __init setup_hwcaps(void)
if (MACHINE_HAS_HPAGE)
elf_hwcap |= HWCAP_S390_HPAGE;
+#if defined(CONFIG_64BIT)
/*
* 64-bit register support for 31-bit processes
* HWCAP_S390_HIGH_GPRS is bit 9.
*/
elf_hwcap |= HWCAP_S390_HIGH_GPRS;
+#endif
get_cpu_id(&cpu_id);
switch (cpu_id.machine) {