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SDEI: Add prioritisation clarification 

To make exception handling amongst Secure components, require that SDEI
exception priorities must be assigned the lowest among Secure
priorities. Clarify documentation to this effect.

Change-Id: I92524b7b7e9b3fa06a10c86372bc3c4dd18c00ad
Signed-off-by: Jeenu Viswambharan <jeenu.viswambharan@arm.com>
This commit is contained in:
Jeenu Viswambharan 2018-01-16 09:29:30 +00:00
parent 8e3032f921
commit f2928f5bae
1 changed files with 3 additions and 3 deletions
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6
docs/porting-guide.rst
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@ -2041,9 +2041,9 @@ This macro must be defined to the EL3 exception priority level associated with
Critical SDEI events on the platform. This must have a lower value (therefore of
higher priority) than ``PLAT_SDEI_NORMAL_PRI``.
It's recommended that SDEI exception priorities in general are assigned the
lowest among Secure priorities. Among the SDEI exceptions, Critical SDEI
priority must be higher than Normal SDEI priority.
**Note**: SDEI exception priorities must be the lowest among Secure priorities.
Among the SDEI exceptions, Critical SDEI priority must be higher than Normal
SDEI priority.
Functions
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