Re: [PATCH v3 05/11] x86/tracing: fix compat syscall handling

From: Marcin Nowakowski
Date: Thu Oct 13 2016 - 02:35:37 EST

On 12.10.2016 15:53, Thomas Gleixner wrote:
On Tue, 11 Oct 2016, Marcin Nowakowski wrote:
- * Because ia32 syscalls do not map to x86_64 syscall numbers
- * this screws up the trace output when tracing a ia32 task.
- * Instead of reporting bogus syscalls, just do not trace them.
- *
- * If the user really wants these, then they should use the
- * raw syscall tracepoints with filtering.

Why aren't you moving this information to the new place? It's valuable.

Well - much of this information is no longer true as with these fixes tracing can work properly, but I can keep a note clarifying that the numbers are mapped differently and why arch_syscall_addr() needs the sort of handling it does.