On 14.05.14 06:12, Gavin Shan wrote:
Originally, syscall ppc_rtas() can be used to invoke RTAS call from user space. Utility "errinjct" is using it to inject various errors to the system for testing purpose. The patch intends to extend the syscall to support both pSeries and PowerNV platform. With that, RTAS and OPAL call can be invoked from user space. In turn, utility "errinjct" can be supported on pSeries and PowerNV platform at same time. The original syscall handler ppc_rtas() is renamed to ppc_firmware(), which calls ppc_call_rtas() or ppc_call_opal() depending on the running platform. The data transported between userland and kerenl is
Please fix your spelling of kernel.
by "struct rtas_args". It's platform specific on how to use the data. Signed-off-by: Mike Qiu <qiudayu@xxxxxxxxxxxxxxxxxx> Signed-off-by: Gavin Shan <gwshan@xxxxxxxxxxxxxxxxxx>
I think the basic idea to maintain the same interface between PAPR and OPAL to user space is sound, but this is really Ben's call.
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