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s390: correct some inline assembly constraints

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Inline assembly code changed in this patch should really use "Q"
constraint "Memory reference without index register and with short
displacement". The kernel does not compile with kasan support enabled
otherwise (due to stack instrumentation).

Signed-off-by: Vasily Gorbik <gor@linux.vnet.ibm.com>
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
This commit is contained in:
Vasily Gorbik
2017-11-13 16:37:33 +01:00
committed by Heiko Carstens
parent 0aaba41b58
commit 11776eaa65
3 changed files with 4 additions and 4 deletions
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2
arch/s390/include/asm/processor.h
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@@ -245,7 +245,7 @@ static inline unsigned short stap(void)
{
unsigned short cpu_address;
asm volatile("stap %0" : "=m" (cpu_address));
asm volatile("stap %0" : "=Q" (cpu_address));
return cpu_address;
}