Upgrade to 4.4.50-rt62

[kvmfornfv.git] / kernel / drivers / crypto / vmx / ppc-xlate.pl

diff --git a/kernel/drivers/crypto/vmx/ppc-xlate.pl b/kernel/drivers/crypto/vmx/ppc-xlate.pl
index b999733..b18e67d 100644 (file)
--- a/kernel/drivers/crypto/vmx/ppc-xlate.pl
+++ b/kernel/drivers/crypto/vmx/ppc-xlate.pl
@@ -139,6 +139,26 @@ my $vmr = sub {
     "  vor     $vx,$vy,$vy";
 };
 
+# Some ABIs specify vrsave, special-purpose register #256, as reserved
+# for system use.
+my $no_vrsave = ($flavour =~ /linux-ppc64le/);
+my $mtspr = sub {
+    my ($f,$idx,$ra) = @_;
+    if ($idx == 256 && $no_vrsave) {
+       "       or      $ra,$ra,$ra";
+    } else {
+       "       mtspr   $idx,$ra";
+    }
+};
+my $mfspr = sub {
+    my ($f,$rd,$idx) = @_;
+    if ($idx == 256 && $no_vrsave) {
+       "       li      $rd,-1";
+    } else {
+       "       mfspr   $rd,$idx";
+    }
+};
+
 # PowerISA 2.06 stuff
 sub vsxmem_op {
     my ($f, $vrt, $ra, $rb, $op) = @_;