[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [PATCH v1 3/5] xen/arm: platforms: Add NXP S32CC platform code
Hi, On 10/09/2024 15:34, Andrei Cherechesu (OSS) wrote: From: Andrei Cherechesu <andrei.cherechesu@xxxxxxx> Added support for NXP S32CC platforms (S32G2, S32G3, S32R45), which need SCMI over SMC calls forwarded to the firmware running at EL3 (TF-A). Linux relies on the SCMI Platform for system services such as clocking, reset, etc. Is it SMCI as in the Arm spec? If so, this should not be platform specific.Furthermore, I was under the impression that we can't blindly forward everything from a domain to the firmware. While it might be okayish for dom0, you also seem to give access to all the domains on the system is it intended? Anyway, there is a series on the ML to add a mediator for SCMI in Xen (see [1]). I think it would be preferable to focus on getting it merged as it would benefit everyone and increase the security posture (we could restrict access). Cheers,[1] https://lore.kernel.org/xen-devel/e9dadd96aa5b64b9232e10a083ce393af620adde.1639472078.git.oleksii_moisieiev@xxxxxxxx Cheers, -- Julien Grall
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