On 26.09.2022 08:20, Wei Chen wrote: > On 2022/8/26 20:51, Carlo Nonato wrote: >> --- a/xen/arch/arm/Kconfig >> +++ b/xen/arch/arm/Kconfig >> @@ -131,6 +131,22 @@ config ARM64_BTI >> Branch Target Identification support. >> This feature is not supported in Xen. >> >> +config CACHE_COLORING >> + bool "Last Level Cache (LLC) coloring" if EXPERT >> + default n
No need for this line, btw. >> + depends on ARM_64 >> + >> +config MAX_CACHE_COLORS >> + int "Maximum number of cache colors" >> + default 128 >> + range 0 65536 > > Just curious. Why select 128 as default vaule here? Is it a classic > implmenntation for Arm64 cache? And the same question for the upper > bound 65536. Going beyond that: What is the meaning of the user picking 0 here? And isn't 1 merely mapping to the allocator we have, i.e. the CACHE_COLORING=n case? IOW shouldn't the lowe bound of the range be (at least) 2? Jan
