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Cavium ThunderX2 SMMU implementation doesn't support page 1 register space and PAGE0_REGS_ONLY option is enabled as an errata workaround. This option when turned on, replaces all page 1 offsets used for EVTQ_PROD/CONS, PRIQ_PROD/CONS register access with page 0 offsets. SMMU resource size checks are now based on SMMU option PAGE0_REGS_ONLY, since resource size can be either 64k/128k. For this, arm_smmu_device_dt_probe/acpi_probe has been moved before platform_get_resource call, so that SMMU options are set beforehand. Signed-off-by: Linu Cherian <linu.cherian@cavium.com> Signed-off-by: Geetha Sowjanya <geethasowjanya.akula@cavium.com> Signed-off-by: Will Deacon <will.deacon@arm.com> |
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Linux kernel ============ This file was moved to Documentation/admin-guide/README.rst Please notice that there are several guides for kernel developers and users. These guides can be rendered in a number of formats, like HTML and PDF. In order to build the documentation, use ``make htmldocs`` or ``make pdfdocs``. There are various text files in the Documentation/ subdirectory, several of them using the Restructured Text markup notation. See Documentation/00-INDEX for a list of what is contained in each file. Please read the Documentation/process/changes.rst file, as it contains the requirements for building and running the kernel, and information about the problems which may result by upgrading your kernel.