diff options
| author |   Heiko Carstens <hca@linux.ibm.com> | 2021-06-09 22:59:13 +0200 |
|---|---|---|
| committer |   Vasily Gorbik <gor@linux.ibm.com> | 2021-06-18 16:41:21 +0200 |
| commit | 75c89a2bc6ef00fd3c38c69cba82a92d0535887a (patch) | |
| tree | 00b600d1d588487cb82a13c8011e2af71e373794 | |
| parent | s390/smp: use register pair instead of register asm (diff) | |
| download | linux-dev-75c89a2bc6ef00fd3c38c69cba82a92d0535887a.tar.xz linux-dev-75c89a2bc6ef00fd3c38c69cba82a92d0535887a.zip | |
s390/page: use register pair instead of register asm
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
| -rw-r--r-- | arch/s390/include/asm/page.h | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/arch/s390/include/asm/page.h b/arch/s390/include/asm/page.h index cc98f9b78fd4..2d83e2cec43a 100644 --- a/arch/s390/include/asm/page.h +++ b/arch/s390/include/asm/page.h @@ -55,13 +55,16 @@ static inline void storage_key_init_range(unsigned long start, unsigned long end */ static inline void copy_page(void *to, void *from) { - register void *reg2 asm ("2") = to; - register unsigned long reg3 asm ("3") = 0x1000; - register void *reg4 asm ("4") = from; - register unsigned long reg5 asm ("5") = 0xb0001000; + union register_pair dst, src; + + dst.even = (unsigned long) to; + dst.odd = 0x1000; + src.even = (unsigned long) from; + src.odd = 0xb0001000; + asm volatile( - " mvcl 2,4" - : "+d" (reg2), "+d" (reg3), "+d" (reg4), "+d" (reg5) + " mvcl %[dst],%[src]" + : [dst] "+&d" (dst.pair), [src] "+&d" (src.pair) : : "memory", "cc"); } |