[PATCH v3 1/4] arm64/sme: Document ABI for TPIDR2 signal information

[Mark Brown]

In order to allow access to TPIDR2 from signal handlers we need to add it
to the signal context, document that we are doing so.

Signed-off-by: Mark Brown <broonie at kernel.org>
---
 Documentation/arm64/sme.rst | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/arm64/sme.rst b/Documentation/arm64/sme.rst
index 16d2db4c2e2e..36b08a105dd1 100644
--- a/Documentation/arm64/sme.rst
+++ b/Documentation/arm64/sme.rst
@@ -111,6 +111,9 @@ be zeroed.
 
 * Signal handlers are invoked with streaming mode and ZA disabled.
 
+* A new signal frame record TPIDR2_MAGIC is added formatted as a struct
+  tpidr2_context to allow access to TPIDR2_EL0 from signal handlers.
+
 * A new signal frame record za_context encodes the ZA register contents on
   signal delivery. [1]
 

-- 
2.30.2