Index: src/x86/ipred_avx512.asm
--- src/x86/ipred_avx512.asm.orig
+++ src/x86/ipred_avx512.asm
@@ -168,18 +168,23 @@ cglobal ipred_dc_left_8bpc, 3, 7, 5, dst, stride, tl, 
     add                  wq, r5
     jmp                  r6
 .h64:
+    _CET_ENDBR
     movu                ym1, [tlq+32] ; unaligned when jumping here from dc_top
     vpdpbusd            ym0, ym1, ym2
 .h32:
+    _CET_ENDBR
     vextracti32x4       xm1, ym0, 1
     paddd               xm0, xm1
 .h16:
+    _CET_ENDBR
     punpckhqdq          xm1, xm0, xm0
     paddd               xm0, xm1
 .h8:
+    _CET_ENDBR
     psrlq               xm1, xm0, 32
     paddd               xm0, xm1
 .h4:
+    _CET_ENDBR
     vpsrlvd             xm0, xmm3
     lea            stride3q, [strideq*3]
     vpbroadcastb         m0, xm0
@@ -204,10 +209,12 @@ cglobal ipred_dc_8bpc, 3, 7, 5, dst, stride, tl, w, h,
     lea            stride3q, [strideq*3]
     jmp                  r6
 .h4:
+    _CET_ENDBR
     movd               xmm1, [tlq-4]
     vpdpbusd            xm0, xmm1, xm3
     jmp                  wq
 .w4:
+    _CET_ENDBR
     movd               xmm1, [tlq+1]
     vpdpbusd            xm0, xmm1, xm3
     cmp                  hd, 4
@@ -228,6 +235,7 @@ cglobal ipred_dc_8bpc, 3, 7, 5, dst, stride, tl, w, h,
 .w4_end:
     vpbroadcastb        xm0, xmm0
 .s4:
+    _CET_ENDBR
     movd   [dstq+strideq*0], xm0
     movd   [dstq+strideq*1], xm0
     movd   [dstq+strideq*2], xm0
@@ -237,10 +245,12 @@ cglobal ipred_dc_8bpc, 3, 7, 5, dst, stride, tl, w, h,
     jg .s4
     RET
 .h8:
+    _CET_ENDBR
     movq               xmm1, [tlq-8]
     vpdpbusd            xm0, xmm1, xm3
     jmp                  wq
 .w8:
+    _CET_ENDBR
     movq               xmm1, [tlq+1]
     vextracti32x4       xm2, ym0, 1
     vpdpbusd            xm0, xmm1, xm3
@@ -261,6 +271,7 @@ cglobal ipred_dc_8bpc, 3, 7, 5, dst, stride, tl, w, h,
 .w8_end:
     vpbroadcastb        xm0, xmm0
 .s8:
+    _CET_ENDBR
     movq   [dstq+strideq*0], xm0
     movq   [dstq+strideq*1], xm0
     movq   [dstq+strideq*2], xm0
@@ -270,10 +281,12 @@ cglobal ipred_dc_8bpc, 3, 7, 5, dst, stride, tl, w, h,
     jg .s8
     RET
 .h16:
+    _CET_ENDBR
     mova               xmm1, [tlq-16]
     vpdpbusd            xm0, xmm1, xm3
     jmp                  wq
 .w16:
+    _CET_ENDBR
     movu               xmm1, [tlq+1]
     vextracti32x4       xm2, ym0, 1
     vpdpbusd            xm0, xmm1, xm3
@@ -294,6 +307,7 @@ cglobal ipred_dc_8bpc, 3, 7, 5, dst, stride, tl, w, h,
 .w16_end:
     vpbroadcastb        xm0, xmm0
 .s16:
+    _CET_ENDBR
     mova   [dstq+strideq*0], xm0
     mova   [dstq+strideq*1], xm0
     mova   [dstq+strideq*2], xm0
@@ -303,10 +317,12 @@ cglobal ipred_dc_8bpc, 3, 7, 5, dst, stride, tl, w, h,
     jg .s16
     RET
 .h32:
+    _CET_ENDBR
     mova                ym1, [tlq-32]
     vpdpbusd            ym0, ym1, ym3
     jmp                  wq
 .w32:
+    _CET_ENDBR
     movu                ym1, [tlq+1]
     vpdpbusd            ym0, ym1, ym3
     vextracti32x4       xm1, ym0, 1
@@ -326,6 +342,7 @@ cglobal ipred_dc_8bpc, 3, 7, 5, dst, stride, tl, w, h,
 .w32_end:
     vpbroadcastb        ym0, xmm0
 .s32:
+    _CET_ENDBR
     mova   [dstq+strideq*0], ym0
     mova   [dstq+strideq*1], ym0
     mova   [dstq+strideq*2], ym0
@@ -335,12 +352,14 @@ cglobal ipred_dc_8bpc, 3, 7, 5, dst, stride, tl, w, h,
     jg .s32
     RET
 .h64:
+    _CET_ENDBR
     mova                ym1, [tlq-64]
     mova                ym2, [tlq-32]
     vpdpbusd            ym0, ym1, ym3
     vpdpbusd            ym0, ym2, ym3
     jmp                  wq
 .w64:
+    _CET_ENDBR
     movu                ym1, [tlq+ 1]
     movu                ym2, [tlq+33]
     vpdpbusd            ym0, ym1, ym3
@@ -361,6 +380,7 @@ cglobal ipred_dc_8bpc, 3, 7, 5, dst, stride, tl, w, h,
 .w64_end:
     vpbroadcastb         m0, xmm0
 .s64:
+    _CET_ENDBR
     mova   [dstq+strideq*0], m0
     mova   [dstq+strideq*1], m0
     mova   [dstq+strideq*2], m0
@@ -401,6 +421,7 @@ cglobal ipred_h_8bpc, 3, 7, 8, dst, stride, tl, w, h, 
     add                  wq, r6
     jmp                  wq
 .w4:
+    _CET_ENDBR
     mova               xmm1, [base+ipred_h_shuf+16]
 .w4_loop:
     movd               xmm0, [tlq+hq-4]
@@ -414,6 +435,7 @@ cglobal ipred_h_8bpc, 3, 7, 8, dst, stride, tl, w, h, 
     jg .w4_loop
     RET
 .w8:
+    _CET_ENDBR
     movsldup           xmm2, [base+ipred_h_shuf+16]
     movshdup           xmm3, [base+ipred_h_shuf+16]
 .w8_loop:
@@ -429,6 +451,7 @@ cglobal ipred_h_8bpc, 3, 7, 8, dst, stride, tl, w, h, 
     jg .w8_loop
     RET
 .w16:
+    _CET_ENDBR
     movsldup             m1, [base+smooth_shuf]
 .w16_loop:
     vpbroadcastd         m0, [tlq+hq-4]
@@ -442,6 +465,7 @@ cglobal ipred_h_8bpc, 3, 7, 8, dst, stride, tl, w, h, 
     jg .w16
     RET
 .w32:
+    _CET_ENDBR
     vpbroadcastd        ym3, [base+pb_1]
     vpord                m2, m3, [base+pb_2] {1to16}
 .w32_loop:
@@ -457,6 +481,7 @@ cglobal ipred_h_8bpc, 3, 7, 8, dst, stride, tl, w, h, 
     jg .w32_loop
     RET
 .w64:
+    _CET_ENDBR
     vpbroadcastd         m4, [base+pb_3]
     vpbroadcastd         m5, [base+pb_2]
     vpbroadcastd         m6, [base+pb_1]
@@ -509,6 +534,7 @@ cglobal ipred_paeth_8bpc, 3, 7, 10, dst, stride, tl, w
     jmp                  wq
 INIT_YMM avx512icl
 .w4:
+    _CET_ENDBR
     vpbroadcastd         m6, [topq]
     mova                 m9, [ipred_h_shuf]
     psubusb              m7, m5, m6
@@ -536,6 +562,7 @@ INIT_YMM avx512icl
     RET
 INIT_ZMM avx512icl
 .w8:
+    _CET_ENDBR
     vpbroadcastq         m6, [topq]
     movsldup             m9, [smooth_shuf]
     psubusb              m7, m5, m6
@@ -564,6 +591,7 @@ INIT_ZMM avx512icl
 .w8_ret:
     RET
 .w16:
+    _CET_ENDBR
     vbroadcasti32x4      m6, [topq]
     movsldup             m9, [smooth_shuf]
     psubusb              m7, m5, m6
@@ -582,6 +610,7 @@ INIT_ZMM avx512icl
     jg .w16_loop
     RET
 .w32:
+    _CET_ENDBR
     vbroadcasti32x8      m6, [topq]
     mova                ym9, ym8
     psubusb              m7, m5, m6
@@ -598,6 +627,7 @@ INIT_ZMM avx512icl
     jg .w32_loop
     RET
 .w64:
+    _CET_ENDBR
     movu                 m6, [topq]
     psubusb              m7, m5, m6
     psubusb              m0, m6, m5
@@ -626,6 +656,7 @@ cglobal ipred_smooth_v_8bpc, 3, 7, 7, dst, stride, tl,
     lea            stride3q, [strideq*3]
     jmp                  wq
 .w4:
+    _CET_ENDBR
     vpbroadcastd         m2, [tlq+1]
     movshdup             m5, [smooth_shuf]
     mova                ym6, [smooth_endA]
@@ -656,6 +687,7 @@ cglobal ipred_smooth_v_8bpc, 3, 7, 7, dst, stride, tl,
 .ret:
     RET
 .w8:
+    _CET_ENDBR
     vpbroadcastq         m2, [tlq+1]
     movshdup             m5, [smooth_shuf]
     mova                ym6, [smooth_endA]
@@ -679,6 +711,7 @@ cglobal ipred_smooth_v_8bpc, 3, 7, 7, dst, stride, tl,
     jl .w8_loop
     RET
 .w16:
+    _CET_ENDBR
     vbroadcasti32x4      m3, [tlq+1]
     movshdup             m6, [smooth_shuf]
     mova                 m7, [smooth_endB]
@@ -707,6 +740,7 @@ cglobal ipred_smooth_v_8bpc, 3, 7, 7, dst, stride, tl,
     jl .w16_loop
     RET
 .w32:
+    _CET_ENDBR
     vbroadcasti32x8      m3, [tlq+1]
     movshdup             m6, [smooth_shuf]
     mova                 m7, [smooth_endB]
@@ -733,6 +767,7 @@ cglobal ipred_smooth_v_8bpc, 3, 7, 7, dst, stride, tl,
     jl .w32_loop
     RET
 .w64:
+    _CET_ENDBR
     movu                 m3, [tlq+1]
     mova                 m6, [smooth_endB]
     punpcklbw            m2, m3, m4
@@ -772,6 +807,7 @@ cglobal ipred_smooth_h_8bpc, 4, 7, 11, dst, stride, tl
     lea            stride3q, [strideq*3]
     jmp                  wq
 .w4:
+    _CET_ENDBR
     movsldup             m3, [smooth_shuf]
     vpbroadcastq         m7, [smooth_weights+4*2]
     mova                ym8, [smooth_endA]
@@ -802,6 +838,7 @@ cglobal ipred_smooth_h_8bpc, 4, 7, 11, dst, stride, tl
 .ret:
     RET
 .w8:
+    _CET_ENDBR
     movsldup             m3, [smooth_shuf]
     vbroadcasti32x4      m7, [smooth_weights+8*2]
     mova                ym8, [smooth_endA]
@@ -825,6 +862,7 @@ cglobal ipred_smooth_h_8bpc, 4, 7, 11, dst, stride, tl
     jg .w8_loop
     RET
 .w16:
+    _CET_ENDBR
     movsldup             m7, [smooth_shuf]
     vbroadcasti32x4      m8, [smooth_weights+16*2]
     vbroadcasti32x4      m9, [smooth_weights+16*3]
@@ -850,6 +888,7 @@ cglobal ipred_smooth_h_8bpc, 4, 7, 11, dst, stride, tl
     jg .w16_loop
     RET
 .w32:
+    _CET_ENDBR
     mova                m10, [smooth_endA]
     vpbroadcastd        ym7, [pb_1]
     vbroadcasti32x8      m8, [smooth_weights+32*2]
@@ -874,6 +913,7 @@ cglobal ipred_smooth_h_8bpc, 4, 7, 11, dst, stride, tl
     jg .w32_loop
     RET
 .w64:
+    _CET_ENDBR
     mova                 m7, [smooth_weights+64*2]
     mova                 m8, [smooth_weights+64*3]
     mova                 m9, [smooth_endA]
@@ -912,6 +952,7 @@ cglobal ipred_smooth_8bpc, 4, 7, 16, dst, stride, tl, 
     lea            stride3q, [strideq*3]
     jmp                  wq
 .w4:
+    _CET_ENDBR
     vpbroadcastd         m8, [tlq+hq+1]
     movsldup             m4, [smooth_shuf]
     movshdup             m5, [smooth_shuf]
@@ -954,6 +995,7 @@ cglobal ipred_smooth_8bpc, 4, 7, 16, dst, stride, tl, 
 .ret:
     RET
 .w8:
+    _CET_ENDBR
     vpbroadcastq         m8, [tlq+hq+1]
     movsldup             m4, [smooth_shuf]
     movshdup             m5, [smooth_shuf]
@@ -988,6 +1030,7 @@ cglobal ipred_smooth_8bpc, 4, 7, 16, dst, stride, tl, 
     jg .w8_loop
     RET
 .w16:
+    _CET_ENDBR
     vbroadcasti32x4      m9, [tlq+hq+1]
     movsldup             m5, [smooth_shuf]
     movshdup            m10, [smooth_shuf]
@@ -1031,6 +1074,7 @@ cglobal ipred_smooth_8bpc, 4, 7, 16, dst, stride, tl, 
     jg .w16_loop
     RET
 .w32:
+    _CET_ENDBR
     vbroadcasti32x8      m9, [tlq+hq+1]
     movshdup            m10, [smooth_shuf]
     mova                m12, [smooth_weights+32*2]
@@ -1073,6 +1117,7 @@ cglobal ipred_smooth_8bpc, 4, 7, 16, dst, stride, tl, 
     jg .w32_loop
     RET
 .w64:
+    _CET_ENDBR
     movu                 m9, [tlq+hq+1]
     mova                m11, [smooth_weights+64*2]
     mova                 m2, [smooth_weights+64*3]
@@ -1122,6 +1167,7 @@ cglobal pal_pred_8bpc, 4, 7, 5, dst, stride, pal, idx,
     lea            stride3q, [strideq*3]
     jmp                  wq
 .w4:
+    _CET_ENDBR
     pshufb             xmm0, xm4, [idxq]
     add                idxq, 16
     movd   [dstq+strideq*0], xmm0
@@ -1133,6 +1179,7 @@ cglobal pal_pred_8bpc, 4, 7, 5, dst, stride, pal, idx,
     jg .w4
     RET
 .w8:
+    _CET_ENDBR
     pshufb             xmm0, xm4, [idxq+16*0]
     pshufb             xmm1, xm4, [idxq+16*1]
     add                idxq, 16*2
@@ -1145,6 +1192,7 @@ cglobal pal_pred_8bpc, 4, 7, 5, dst, stride, pal, idx,
     jg .w8
     RET
 .w16:
+    _CET_ENDBR
     pshufb               m0, m4, [idxq]
     add                idxq, 64
     mova          [dstq+strideq*0], xm0
@@ -1156,6 +1204,7 @@ cglobal pal_pred_8bpc, 4, 7, 5, dst, stride, pal, idx,
     jg .w16
     RET
 .w32:
+    _CET_ENDBR
     pshufb               m0, m4, [idxq+64*0]
     pshufb               m1, m4, [idxq+64*1]
     add                idxq, 64*2
@@ -1168,6 +1217,7 @@ cglobal pal_pred_8bpc, 4, 7, 5, dst, stride, pal, idx,
     jg .w32
     RET
 .w64:
+    _CET_ENDBR
     pshufb               m0, m4, [idxq+64*0]
     pshufb               m1, m4, [idxq+64*1]
     pshufb               m2, m4, [idxq+64*2]