path: root/Documentation/powerpc/papr_hcalls.rst
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2020-06-15powerpc: Document details on H_SCM_HEALTH hcallVaibhav Jain-4/+42
Add documentation to 'papr_hcalls.rst' describing the bitmap flags that are returned from H_SCM_HEALTH hcall as per the PAPR-SCM specification. Signed-off-by: Vaibhav Jain <> Acked-by: Ira Weiny <> Cc: "Aneesh Kumar K . V" <> Cc: Dan Williams <> Cc: Michael Ellerman <> Cc: Ira Weiny <> Link: Signed-off-by: Dan Williams <>
2020-01-29powerpc: Provide initial documentation for PAPR hcallsVaibhav Jain-0/+250
This doc patch provides an initial description of the hcall op-codes that are used by Linux kernel running as a guest (LPAR) on top of PowerVM or any other sPAPR compliant hyper-visor (e.g qemu). Apart from documenting the hcalls the doc-patch also provides a rudimentary overview of how hcall ABI, how they are issued with the Linux kernel and how information/control flows between the guest and hypervisor. Signed-off-by: Vaibhav Jain <> Reviewed-by: Laurent Dufour <> Acked-by: Nicholas Piggin <> [mpe: Add SPDX tag, add it to index.rst] Signed-off-by: Michael Ellerman <> Link: