s390/mm: implement set_memory_rox()

Provide the s390 specific native set_memory_rox() implementation to avoid
frequent set_memory_ro(); set_memory_x() call pairs.

This is the s390 variant of commit 60463628c9e0 ("x86/mm: Implement native
set_memory_rox()").

Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

diff --git a/arch/s390/include/asm/set_memory.h b/arch/s390/include/asm/set_memory.h
index 950d87bd997a7b32a0d055038ad567b5a0418be5..f4362ce1e17a6546ddabaafd1e7b2c124a529b01 100644 (file)
--- a/arch/s390/include/asm/set_memory.h
+++ b/arch/s390/include/asm/set_memory.h
@@ -34,6 +34,12 @@ static inline int set_memory_x(unsigned long addr, int numpages)
        return __set_memory(addr, numpages, SET_MEMORY_X);
 }
 
+#define set_memory_rox set_memory_rox
+static inline int set_memory_rox(unsigned long addr, int numpages)
+{
+       return __set_memory(addr, numpages, SET_MEMORY_RO | SET_MEMORY_X);
+}
+
 static inline int set_memory_4k(unsigned long addr, int numpages)
 {
        return __set_memory(addr, numpages, SET_MEMORY_4K);