s390/fpu: remove "novx" option

Remove the "novx" kernel command line option: the vector code runs
without any problems since many years.

Reviewed-by: Hendrik Brueckner <brueckner@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>

Author: hcahca

arch/s390/kernel/early.c

@@ -271,14 +271,6 @@ static inline void setup_access_registers(void)
 	restore_access_regs(acrs);
 }
 
-static int __init disable_vector_extension(char *str)
-{
-	S390_lowcore.machine_flags &= ~MACHINE_FLAG_VX;
-	system_ctl_clear_bit(0, CR0_VECTOR_BIT);
-	return 0;
-}
-early_param("novx", disable_vector_extension);
-
 char __bootdata(early_command_line)[COMMAND_LINE_SIZE];
 static void __init setup_boot_command_line(void)
 {

arch/s390/kernel/processor.c

@@ -201,10 +201,7 @@ static int __init setup_hwcaps(void)
 	if (MACHINE_HAS_TE)
 		elf_hwcap |= HWCAP_TE;
 
-	/*
-	 * Vector extension can be disabled with the "novx" parameter.
-	 * Use MACHINE_HAS_VX instead of facility bit 129.
-	 */
+	/* Use MACHINE_HAS_VX instead of facility bit 129. */
 	if (MACHINE_HAS_VX) {
 		elf_hwcap |= HWCAP_VXRS;
 		if (test_facility(134))