diff options
| author | Shanker Donthineni <shankerd@codeaurora.org> | 2017-03-07 08:20:38 -0600 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2017-03-22 12:43:39 +0100 |
| commit | 095635be809ade2429c844d09e8391330fa9bca4 (patch) | |
| tree | 38e68db695e90d0480a357000fdc2a8dd70e2ff8 /arch/arm64/Kconfig | |
| parent | 61e79860b4bc6259a9685a107a6b34352d6dc7bd (diff) | |
irqchip/gicv3-its: Add workaround for QDF2400 ITS erratum 0065
commit 90922a2d03d84de36bf8a9979d62580102f31a92 upstream.
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: stable@vger.kernel.org
Signed-off-by: Shanker Donthineni <shankerd@codeaurora.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'arch/arm64/Kconfig')
| -rw-r--r-- | arch/arm64/Kconfig | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/arch/arm64/Kconfig b/arch/arm64/Kconfig index 969ef880d234..cf57a7799a0f 100644 --- a/arch/arm64/Kconfig +++ b/arch/arm64/Kconfig @@ -474,6 +474,16 @@ config CAVIUM_ERRATUM_27456 If unsure, say Y. +config QCOM_QDF2400_ERRATUM_0065 + bool "QDF2400 E0065: Incorrect GITS_TYPER.ITT_Entry_size" + default y + help + On Qualcomm Datacenter Technologies QDF2400 SoC, ITS hardware reports + ITE size incorrectly. The GITS_TYPER.ITT_Entry_size field should have + been indicated as 16Bytes (0xf), not 8Bytes (0x7). + + If unsure, say Y. + endmenu |