在2023年10月12日十月 下午4:34，Thomas Bogendoerfer写道： > On Wed, Oct 04, 2023 at 06:10:29PM +0200, Gregory CLEMENT wrote: >> From: Vladimir Kondratiev <vladimir.kondratiev@xxxxxxxxx> >> >> Now 64-bit MIPS uses 32-bit compatible segments KSEG0 and KSEG1 >> to trivially map first 1/2 GByte of physical memory. This memory >> used to run kernel. This mean, one should have memory installed >> in this area in order for Linux to work. >> >> Kconfig CONFIG_USE_XKPHYS introduced; it adds support for kernel >> to use virtual addresses from the XKPHYS segment for both cached >> and uncached access. XKPHYS allows to access 2^48 bytes of >> memory, thus allowing kernel to work with any memory >> configuration. > > IMHO it doesn't make sense to introduce an option for a generic > kernel, which then renders the generic kernel useless on all > platforms other then yours. Actually it won't. Many 64bit platforms do support load kernel to XKPHYS, including boston and Loongson64, so it's still a generic function. IMO this patch won't break support for any generic platform. > > Please don't use generic, but setup a new platform for it. Hopefully > we can get rid all of the weirdness in this patch. Perhaps better to introduce a Kconfig option to allow manipulation of kernel load address. Thanks - Jiaxun > > Thomas. > > -- > Crap can work. Given enough thrust pigs will fly, but it's not necessarily a > good idea. [ RFC1925, 2.3 ]
