Add conformance test for callx instruction #195
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Signed-off-by: Dave Thaler <[email protected]>
Alan-Jowett
approved these changes
Feb 5, 2024
Alan-Jowett
approved these changes
Feb 5, 2024
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"callx" instructions are generated by both clang (under -O0 or -O1) and gcc (if the
experimental -mxbpf option is passed to the compiler), but are not supported by Linux.
Per mailing list discussion at
https://mailarchive.ietf.org/arch/msg/bpf/CDQjTO8R8gdPdfeKVnoxWco8_Lw/ the intent is for the Linux verifier to support them eventually. vbpf/prevail#584 adds support to PREVAIL so that dependent projects like ebpf-for-windows can use them.