Agilex™ 5 ES Device Errata and User Guidelines

ID 825514
Date 12/09/2024
Public
Document Table of Contents

3.2.19. 2307838: ESR_ELx.ISV can be set incorrectly for an external abort on translation table walk

Description

When a data double bit error or external abort is encountered during a translation table walk, a synchronous exception is reported with the ISV bit set in the ESR_ELx register.

Conditions

  • A data double bit error or external abort is encountered during a translation table walk, and a synchronous exception is reported.

Impact

If the previous condition is met, the ESR_ELx.ISV bit will be set. The ESR[23:14] bits are set with the correct syndrome for the instruction making the access. That is SAS, SSE, SRT, SF, and AR are all set according to the instruction.

Workaround

This erratum has no workaround.

Category

Category C