s390/crypto: fix compile error for ChaCha20 module

The clgfi instruction used within the ChaCha20 assembly is only
available for z9-109 and newer machines, and therefore this will
generate a compile error if compiled e.g. with MARCH_Z900.

Given that the assembler code will only be executed on machines with
vector instructions, which became much later available than z9-109,
use insn notation to generate the clgfi instruction, and avoid compile
errors due to unknown instructions.

Fixes: b087dfab4d39 ("s390/crypto: add SIMD implementation for ChaCha20")
Reported-by: kernel test robot <lkp@intel.com>
Reviewed-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>

diff --git a/arch/s390/crypto/chacha-s390.S b/arch/s390/crypto/chacha-s390.S
index 9b03362..badf5c4 100644 (file)
--- a/arch/s390/crypto/chacha-s390.S
+++ b/arch/s390/crypto/chacha-s390.S
@@ -312,7 +312,7 @@ ENTRY(chacha20_vx_4x)
        VPERM   XC0,XC0,XC0,BEPERM
        VPERM   XD0,XD0,XD0,BEPERM
 
-       clgfi   LEN,0x40
+       .insn   rilu,0xc20e00000000,LEN,0x40    # clgfi LEN,0x40
        jl      .Ltail_4x
 
        VLM     XT0,XT3,0,INP,0
@@ -339,7 +339,7 @@ ENTRY(chacha20_vx_4x)
        VPERM   XC0,XC0,XC0,BEPERM
        VPERM   XD0,XD0,XD0,BEPERM
 
-       clgfi   LEN,0x40
+       .insn   rilu,0xc20e00000000,LEN,0x40    # clgfi LEN,0x40
        jl      .Ltail_4x
 
        VLM     XT0,XT3,0,INP,0
@@ -366,7 +366,7 @@ ENTRY(chacha20_vx_4x)
        VPERM   XC0,XC0,XC0,BEPERM
        VPERM   XD0,XD0,XD0,BEPERM
 
-       clgfi   LEN,0x40
+       .insn   rilu,0xc20e00000000,LEN,0x40    # clgfi LEN,0x40
        jl      .Ltail_4x
 
        VLM     XT0,XT3,0,INP,0
@@ -472,7 +472,7 @@ ENDPROC(chacha20_vx_4x)
 #define T3             %v30
 
 ENTRY(chacha20_vx)
-       clgfi   LEN,256
+       .insn   rilu,0xc20e00000000,LEN,256     # clgfi LEN,256
        jle     chacha20_vx_4x
        stmg    %r6,%r7,6*8(SP)
 
@@ -725,7 +725,7 @@ ENTRY(chacha20_vx)
        VPERM   C0,C0,C0,BEPERM
        VPERM   D0,D0,D0,BEPERM
 
-       clgfi   LEN,0x40
+       .insn   rilu,0xc20e00000000,LEN,0x40    # clgfi LEN,0x40
        jl      .Ltail_vx
 
        VAF     D2,D2,T2                # +K[3]+2
@@ -754,7 +754,7 @@ ENTRY(chacha20_vx)
        VPERM   C0,C1,C1,BEPERM
        VPERM   D0,D1,D1,BEPERM
 
-       clgfi   LEN,0x40
+       .insn   rilu,0xc20e00000000,LEN,0x40    # clgfi LEN,0x40
        jl      .Ltail_vx
 
        VLM     A1,D1,0,INP,0
@@ -780,7 +780,7 @@ ENTRY(chacha20_vx)
        VPERM   C0,C2,C2,BEPERM
        VPERM   D0,D2,D2,BEPERM
 
-       clgfi   LEN,0x40
+       .insn   rilu,0xc20e00000000,LEN,0x40    # clgfi LEN,0x40
        jl      .Ltail_vx
 
        VLM     A1,D1,0,INP,0
@@ -807,7 +807,7 @@ ENTRY(chacha20_vx)
        VPERM   C0,C3,C3,BEPERM
        VPERM   D0,D3,D3,BEPERM
 
-       clgfi   LEN,0x40
+       .insn   rilu,0xc20e00000000,LEN,0x40    # clgfi LEN,0x40
        jl      .Ltail_vx
 
        VAF     D3,D2,T1                # K[3]+4
@@ -837,7 +837,7 @@ ENTRY(chacha20_vx)
        VPERM   C0,C4,C4,BEPERM
        VPERM   D0,D4,D4,BEPERM
 
-       clgfi   LEN,0x40
+       .insn   rilu,0xc20e00000000,LEN,0x40    # clgfi LEN,0x40
        jl      .Ltail_vx
 
        VLM     A1,D1,0,INP,0
@@ -864,7 +864,7 @@ ENTRY(chacha20_vx)
        VPERM   C0,C5,C5,BEPERM
        VPERM   D0,D5,D5,BEPERM
 
-       clgfi   LEN,0x40
+       .insn   rilu,0xc20e00000000,LEN,0x40    # clgfi LEN,0x40
        jl      .Ltail_vx
 
        VLM     A1,D1,0,INP,0