[S390] Use copy_to_absolute_zero() instead of "stura/sturg"
Use the new copy_to_absolute_zero() function instead of manual "stura"
and "sturg" to make the code shorter and more readable.
Signed-off-by: Michael Holzheu <holzheu@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
index e5a72a2..9e2f6f7 100644
--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -1498,30 +1498,12 @@
static void dump_reipl_run(struct shutdown_trigger *trigger)
{
- preempt_disable();
- /*
- * Bypass dynamic address translation (DAT) when storing IPL parameter
- * information block address and checksum into the prefix area
- * (corresponding to absolute addresses 0-8191).
- * When enhanced DAT applies and the STE format control in one,
- * the absolute address is formed without prefixing. In this case a
- * normal store (stg/st) into the prefix area would no more match to
- * absolute addresses 0-8191.
- */
-#ifdef CONFIG_64BIT
- asm volatile("sturg %0,%1"
- :: "a" ((unsigned long) reipl_block_actual),
- "a" (&lowcore_ptr[smp_processor_id()]->ipib));
-#else
- asm volatile("stura %0,%1"
- :: "a" ((unsigned long) reipl_block_actual),
- "a" (&lowcore_ptr[smp_processor_id()]->ipib));
-#endif
- asm volatile("stura %0,%1"
- :: "a" (csum_partial(reipl_block_actual,
- reipl_block_actual->hdr.len, 0)),
- "a" (&lowcore_ptr[smp_processor_id()]->ipib_checksum));
- preempt_enable();
+ u32 csum;
+
+ csum = csum_partial(reipl_block_actual, reipl_block_actual->hdr.len, 0);
+ copy_to_absolute_zero(&S390_lowcore.ipib_checksum, &csum, sizeof(csum));
+ copy_to_absolute_zero(&S390_lowcore.ipib, &reipl_block_actual,
+ sizeof(reipl_block_actual));
dump_run(trigger);
}