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irqchip/gicv3-its: Add workaround for QDF2400 ITS erratum 0065

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On Qualcomm Datacenter Technologies QDF2400 SoCs, the ITS hardware
implementation uses 16Bytes for Interrupt Translation Entry (ITE),
but reports an incorrect value of 8Bytes in GITS_TYPER.ITTE_size.

It might cause kernel memory corruption depending on the number
of MSI(x) that are configured and the amount of memory that has
been allocated for ITEs in its_create_device().

This patch fixes the potential memory corruption by setting the
correct ITE size to 16Bytes.

Cc: [email protected]
Signed-off-by: Shanker Donthineni <[email protected]>
Signed-off-by: Marc Zyngier <[email protected]>
This commit is contained in:
Shanker Donthineni 2017-03-07 08:20:38 -06:00 • committed by Marc Zyngier
commit 90922a2d03
3 changed files with 27 additions and 0 deletions
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1
Documentation/arm64/silicon-errata.txt
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@ -68,3 +68,4 @@ stable kernels.
| | | | |
| Qualcomm Tech. | Falkor v1 | E1003 | QCOM_FALKOR_ERRATUM_1003 |
| Qualcomm Tech. | Falkor v1 | E1009 | QCOM_FALKOR_ERRATUM_1009 |
| Qualcomm Tech. | QDF2400 ITS | E0065 | QCOM_QDF2400_ERRATUM_0065 |