feat(mte): adds feature detection for MTE_PERM
Adds feature detection for v8.9 feature FEAT_MTE_PERM. Adds respective
ID_AA64PFR2_EL1 definitions and ENABLE_FEAT_MTE_PERM define.
Change-Id: If24b42f1207154e639016b0b840b2d91c6ee13d4
Signed-off-by: Maksims Svecovs <maksims.svecovs@arm.com>
Signed-off-by: Harrison Mutai <harrison.mutai@arm.com>
diff --git a/docs/getting_started/build-options.rst b/docs/getting_started/build-options.rst
index 276daa4..47fd450 100644
--- a/docs/getting_started/build-options.rst
+++ b/docs/getting_started/build-options.rst
@@ -308,6 +308,13 @@
flag can take the values 0 to 2, to align with the ``FEATURE_DETECTION``
mechanism. Default value is ``0``.
+- ``ENABLE_FEAT_MTE_PERM``: Numeric value to enable support for
+ ``FEAT_MTE_PERM``, which introduces Allocation tag access permission to
+ memory region attributes. ``FEAT_MTE_PERM`` is a optional architectural
+ feature available from v8.9 and upwards. This flag can take the values 0 to
+ 2, to align with the ``FEATURE_DETECTION`` mechanism. Default value is
+ ``0``.
+
- ``ENABLE_FEAT_PAN``: Numeric value to enable the ``FEAT_PAN`` (Privileged
Access Never) extension. ``FEAT_PAN`` adds a bit to PSTATE, generating a
permission fault for any privileged data access from EL1/EL2 to virtual