Boyan Karatotev 13f4a25251 fix(cm): change back owning security state when a feature is disabled ... Patch fc7dca72ba656e5f147487b20f9f0fb6eb39e116 changed the owning security states of the TRBE and SPE buffers to NS. The thinking was that this would assist SMCCC feature availability to more easily determine if the feature is enabled or disabled. However, that only changed bit 0 while the SMCCC feature only looks at bit 1 so this change is redundant. It was also meant to tighten security but that was done by 73d98e3759 instead. Annoyingly, FEAT_TRBE has TRBIDR_EL1 which reports that programming is allowed when the current security state owns the buffer even when the MDCR_EL3 setting disallows this in practice. So revert the functional aspect of the patch as it causes linux panics with ERRATA_A520_2938996. Keep the defines as they are used elsewhere. Change-Id: I39463d585df89aee44d1996137616da85d678f41 Signed-off-by: Boyan Karatotev <boyan.karatotev@arm.com>		2025-01-14 09:06:37 +00:00
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trbe.c	fix(cm): change back owning security state when a feature is disabled	2025-01-14 09:06:37 +00:00