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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 Critical SDEI events on the platform. This must have a lower value (therefore of
higher priority) than ``PLAT_SDEI_NORMAL_PRI``. higher priority) than ``PLAT_SDEI_NORMAL_PRI``.
It's recommended that SDEI exception priorities in general are assigned the **Note**: SDEI exception priorities must be the lowest among Secure priorities.
lowest among Secure priorities. Among the SDEI exceptions, Critical SDEI Among the SDEI exceptions, Critical SDEI priority must be higher than Normal
priority must be higher than Normal SDEI priority. SDEI priority.
Functions Functions
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