On Fri, Sep 04, 2020 at 06:40:38PM +0800, Miles Chen wrote: > In previous discussion [1] and [2], we found that it is risky to > use max_pfn or totalram_pages to tell if 4GB mode is enabled. > > Check 4GB mode by reading infracfg register, remove the usage > of the un-exported symbol max_pfn. > > This is a step towards building mtk_iommu as a kernel module. > > [1] https://lore.kernel.org/lkml/20200603161132.2441-1-miles.chen@xxxxxxxxxxxx/ > [2] https://lore.kernel.org/lkml/20200604080120.2628-1-miles.chen@xxxxxxxxxxxx/ > [3] https://lore.kernel.org/lkml/20200715205120.GA778876@bogus/ Applied, thanks.
