[PATCH bpf] bpf, docs: Correct the example of BPF_XOR

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Refer to description of BPF_XOR, dst_reg should be used but not src_reg
in the examples.

Signed-off-by: Zheng Yejian <zhengyejian1@xxxxxxxxxx>
---
 Documentation/bpf/instruction-set.rst | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/Documentation/bpf/instruction-set.rst b/Documentation/bpf/instruction-set.rst
index 5d798437dad4..e672d5ec6cc7 100644
--- a/Documentation/bpf/instruction-set.rst
+++ b/Documentation/bpf/instruction-set.rst
@@ -122,11 +122,11 @@ BPF_END   0xd0   byte swap operations (see `Byte swap instructions`_ below)
 
 ``BPF_XOR | BPF_K | BPF_ALU`` means::
 
-  src_reg = (u32) src_reg ^ (u32) imm32
+  dst_reg = (u32) dst_reg ^ (u32) imm32
 
 ``BPF_XOR | BPF_K | BPF_ALU64`` means::
 
-  src_reg = src_reg ^ imm32
+  dst_reg = dst_reg ^ imm32
 
 
 Byte swap instructions
-- 
2.25.1




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