These changes are the raw update to linux-4.4.6-rt14. Kernel sources

[kvmfornfv.git] / kernel / arch / s390 / kernel / early.c

diff --git a/kernel/arch/s390/kernel/early.c b/kernel/arch/s390/kernel/early.c
index 549a73a..3c31609 100644 (file)
--- a/kernel/arch/s390/kernel/early.c
+++ b/kernel/arch/s390/kernel/early.c
@@ -17,6 +17,7 @@
 #include <linux/pfn.h>
 #include <linux/uaccess.h>
 #include <linux/kernel.h>
+#include <asm/diag.h>
 #include <asm/ebcdic.h>
 #include <asm/ipl.h>
 #include <asm/lowcore.h>
@@ -286,6 +287,7 @@ static __init void detect_diag9c(void)
        int rc;
 
        cpu_address = stap();
+       diag_stat_inc(DIAG_STAT_X09C);
        asm volatile(
                "       diag    %2,0,0x9c\n"
                "0:     la      %0,0\n"
@@ -300,6 +302,7 @@ static __init void detect_diag44(void)
 {
        int rc;
 
+       diag_stat_inc(DIAG_STAT_X044);
        asm volatile(
                "       diag    0,0,0x44\n"
                "0:     la      %0,0\n"
@@ -326,9 +329,19 @@ static __init void detect_machine_facilities(void)
                S390_lowcore.machine_flags |= MACHINE_FLAG_TE;
        if (test_facility(51))
                S390_lowcore.machine_flags |= MACHINE_FLAG_TLB_LC;
-       if (test_facility(129))
+       if (test_facility(129)) {
                S390_lowcore.machine_flags |= MACHINE_FLAG_VX;
+               __ctl_set_bit(0, 17);
+       }
+}
+
+static int __init disable_vector_extension(char *str)
+{
+       S390_lowcore.machine_flags &= ~MACHINE_FLAG_VX;
+       __ctl_clear_bit(0, 17);
+       return 1;
 }
+early_param("novx", disable_vector_extension);
 
 static int __init cad_setup(char *str)
 {