s390/extable: Replace open-coded sfpc inline assembly with fpu_sfpc()

hcahca · Alexander Gordeev · commit 1d7a9719ba2d · 2025-01-26T17:24:04.000+01:00
Use fpc_sfpc() instead of open-coding.

Reviewed-by: Alexander Gordeev &lt;agordeev@linux.ibm.com&gt;
Signed-off-by: Heiko Carstens &lt;hca@linux.ibm.com&gt;
Signed-off-by: Alexander Gordeev &lt;agordeev@linux.ibm.com&gt;
diff --git a/arch/s390/mm/extable.c b/arch/s390/mm/extable.c
@@ -7,6 +7,7 @@
 #include <linux/panic.h>
 #include <asm/asm-extable.h>
 #include <asm/extable.h>
+#include <asm/fpu.h>
 
 const struct exception_table_entry *s390_search_extables(unsigned long addr)
 {
@@ -79,7 +80,7 @@ static bool ex_handler_zeropad(const struct exception_table_entry *ex, struct pt
 
 static bool ex_handler_fpc(const struct exception_table_entry *ex, struct pt_regs *regs)
 {
-	asm volatile("sfpc	%[val]\n" : : [val] "d" (0));
+	fpu_sfpc(0);
 	regs->psw.addr = extable_fixup(ex);
 	return true;
 }

Original file line number	Diff line number	Diff line change
`@@ -7,6 +7,7 @@`
`7`	`7`	`#include <linux/panic.h>`
`8`	`8`	`#include <asm/asm-extable.h>`
`9`	`9`	`#include <asm/extable.h>`
	`10`	`+#include <asm/fpu.h>`
`10`	`11`
`11`	`12`	`const struct exception_table_entry *s390_search_extables(unsigned long addr)`
`12`	`13`	`{`
`@@ -79,7 +80,7 @@ static bool ex_handler_zeropad(const struct exception_table_entry *ex, struct pt`
`79`	`80`
`80`	`81`	`static bool ex_handler_fpc(const struct exception_table_entry ex, struct pt_regs regs)`
`81`	`82`	`{`
`82`		`- asm volatile("sfpc %[val]\n" : : [val] "d" (0));`
	`83`	`+ fpu_sfpc(0);`
`83`	`84`	`regs->psw.addr = extable_fixup(ex);`
`84`	`85`	`return true;`
`85`	`86`	`}`