On Wed, Jun 11, 2025 at 12:19:57PM +0000, Yeo Reum Yun wrote:

Hi Mark,

quoted

quoted

+HWCAP3_MTE_FAR

quoted

+    Functionality implied by ID_AA64PFR2_EL1.MTEFAR == 0b0001.
+Applications should interpret the values of these bits based on
+the support for the 'mte_far' hwcap. If the support is not present,
+the values of these bits should be considered as undefined otherwise valid.

The constant is HWCAP3_MTE_FAR and the cpuinfo is mtefar:

+     [KERNEL_HWCAP_MTE_FAR]          = "mtefar",

The reference to the hwcap should probably be one of these, I'd go for
HWCAP3_MTE_FAR since it says hwcap.

Just for confirmation. so change to "mtefar" -> "mte_far"
Am I missing?

I'd write it as HWCAP3_MTE_FAR since that's the thing you're
referencing.