diff options
| author | Heiko Carstens <hca@linux.ibm.com> | 2025-02-24 15:59:11 +0100 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2025-03-04 17:34:03 +0100 |
| commit | 9ef496ddf95e0410bf3003cf2415485879e536f4 (patch) | |
| tree | 0abd83a35f0d212e2faa0f60ed2bcb01a4349a24 | |
| parent | 097cf5d57f1fce25bf9c840bc033ff95e5a9234a (diff) | |
s390/boot: Convert __diag308() to extable
Shorten __diag308() and use regular EX_TABLE program check handling.
Acked-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>
| -rw-r--r-- | arch/s390/boot/ipl_parm.c | 25 |
1 files changed, 5 insertions, 20 deletions
diff --git a/arch/s390/boot/ipl_parm.c b/arch/s390/boot/ipl_parm.c index 86cfb16dd63d..b49c906b57dc 100644 --- a/arch/s390/boot/ipl_parm.c +++ b/arch/s390/boot/ipl_parm.c @@ -35,29 +35,14 @@ int vmalloc_size_set; static inline int __diag308(unsigned long subcode, void *addr) { - unsigned long reg1, reg2; - union register_pair r1; - psw_t old; + union register_pair r1 = { .even = (unsigned long)addr, .odd = 0 }; - r1.even = (unsigned long) addr; - r1.odd = 0; asm volatile( - " mvc 0(16,%[psw_old]),0(%[psw_pgm])\n" - " epsw %[reg1],%[reg2]\n" - " st %[reg1],0(%[psw_pgm])\n" - " st %[reg2],4(%[psw_pgm])\n" - " larl %[reg1],1f\n" - " stg %[reg1],8(%[psw_pgm])\n" " diag %[r1],%[subcode],0x308\n" - "1: mvc 0(16,%[psw_pgm]),0(%[psw_old])\n" - : [r1] "+&d" (r1.pair), - [reg1] "=&d" (reg1), - [reg2] "=&a" (reg2), - "+Q" (get_lowcore()->program_new_psw), - "=Q" (old) - : [subcode] "d" (subcode), - [psw_old] "a" (&old), - [psw_pgm] "a" (&get_lowcore()->program_new_psw) + "0:\n" + EX_TABLE(0b, 0b) + : [r1] "+d" (r1.pair) + : [subcode] "d" (subcode) : "cc", "memory"); return r1.odd; } |