summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
authorMartin Schwidefsky2014-07-15 10:41:37 +0200
committerMartin Schwidefsky2014-07-16 10:48:12 +0200
commit9f86745722d95bc7f855069bd82285bd10dc97ff (patch)
tree83d3dade5bdf6f4dfcd9cb5f957d41aa1800bdb1
parents390/zcrypt: improve device probing for zcrypt adapter cards (diff)
downloadkernel-qcow2-linux-9f86745722d95bc7f855069bd82285bd10dc97ff.tar.gz
kernel-qcow2-linux-9f86745722d95bc7f855069bd82285bd10dc97ff.tar.xz
kernel-qcow2-linux-9f86745722d95bc7f855069bd82285bd10dc97ff.zip
s390: fix restore of invalid floating-point-control
The fixup of the inline assembly to restore the floating-point-control register needs to check for instruction address *after* the lfcp instruction as the specification and data exceptions are suppresssing. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
-rw-r--r--arch/s390/include/asm/switch_to.h4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/s390/include/asm/switch_to.h b/arch/s390/include/asm/switch_to.h
index df38c70cd59e..18ea9e3f8142 100644
--- a/arch/s390/include/asm/switch_to.h
+++ b/arch/s390/include/asm/switch_to.h
@@ -51,8 +51,8 @@ static inline int restore_fp_ctl(u32 *fpc)
return 0;
asm volatile(
- "0: lfpc %1\n"
- " la %0,0\n"
+ " lfpc %1\n"
+ "0: la %0,0\n"
"1:\n"
EX_TABLE(0b,1b)
: "=d" (rc) : "Q" (*fpc), "0" (-EINVAL));