From: Heiko Carstens <hca@linux.ibm.com>
Date: Wed, 26 Feb 2025 10:03:06 +0000 (+0100)
Subject: s390/traps: Get rid of superfluous cpu_has_vx() check
X-Git-Tag: v6.15-rc1~113^2~21
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8d5c2b495c10072df497252d73189a610a0721bd;p=thirdparty%2Fkernel%2Flinux.git

s390/traps: Get rid of superfluous cpu_has_vx() check

If the vector facility is installed cpu_has_vx() is always true, if it is
not installed the result is always false, and no vector exception can
happen. Therefore remove the superfluous check.

Reviewed-by: Sven Schnelle <svens@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/kernel/traps.c b/arch/s390/kernel/traps.c
index cabc38a38ae3b..945522266037d 100644
--- a/arch/s390/kernel/traps.c
+++ b/arch/s390/kernel/traps.c
@@ -198,11 +198,6 @@ static void vector_exception(struct pt_regs *regs)
 {
 	int si_code, vic;
 
-	if (!cpu_has_vx()) {
-		do_trap(regs, SIGILL, ILL_ILLOPN, "illegal operation");
-		return;
-	}
-
 	/* get vector interrupt code from fpc */
 	save_user_fpu_regs();
 	vic = (current->thread.ufpu.fpc & 0xf00) >> 8;