On Mon, Aug 19, 2024 at 02:19:08PM +0100, Steven Price wrote: > From: Suzuki K Poulose <suzuki.poulose@xxxxxxx> > > The RMM (Realm Management Monitor) provides functionality that can be > accessed by a realm guest through SMC (Realm Services Interface) calls. > > The SMC definitions are based on DEN0137[1] version 1.0-rel0-rc1. > > [1] https://developer.arm.com/-/cdn-downloads/permalink/PDF/Architectures/DEN0137_1.0-rel0-rc1_rmm-arch_external.pdf > > Signed-off-by: Suzuki K Poulose <suzuki.poulose@xxxxxxx> > Signed-off-by: Steven Price <steven.price@xxxxxxx> Acked-by: Catalin Marinas <catalin.marinas@xxxxxxx> (I did cross-check the definitions with the spec) > +struct realm_config { > + union { > + struct { > + unsigned long ipa_bits; /* Width of IPA in bits */ > + unsigned long hash_algo; /* Hash algorithm */ > + }; > + u8 pad[0x200]; > + }; > + union { > + u8 rpv[64]; /* Realm Personalization Value */ > + u8 pad2[0xe00]; > + }; > + /* > + * The RMM requires the configuration structure to be aligned to a 4k > + * boundary, ensure this happens by aligning this structure. > + */ > +} __aligned(0x1000); It might have been easier to just write the pad sizes in decimal (trying to figure out what 0xe00 is ;)). Anyway, it's fine like this as well. -- Catalin
