On Wed, Feb 15, 2023 at 06:58:13PM +0800, heyuqiang wrote: > There is an error > > tree: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git > master > head: c911f03f8d444e623724fddd82b07a7e1af42338 > commit: d5924531dd8ad012ad13eb4d6a5e120c3dadfc05 arm64/kexec: Test page size > support with new TGRAN range values > # https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=d5924531dd8ad012ad13eb4d6a5e120c3dadfc05 > > When I compile the ko file, I add [-Werror=type-limits] compilation options, > an error is reported during compilation. Why add that option? Is that a valid option for the 5.10.y kernel? Is this something new? And note, you are responding to a commit from last November, with no context at all. Is this an issue in Linus's tree too? > > The log is as follows: > > ./arch/arm64/include/asm/cpufeature.h: In function > ‘system_supports_4kb_granule’: > ./arch/arm64/include/asm/cpufeature.h:653:14: error: > comparison of unsigned expression >= 0 is always true [-Werror=type-limits] > return (val >= ID_AA64MMFR0_TGRAN4_SUPPORTED_MIN) && > ^~ > ./arch/arm64/include/asm/cpufeature.h: In function > ‘system_supports_64kb_granule’: > ./arch/arm64/include/asm/cpufeature.h:666:14: error: > comparison of unsigned expression >= 0 is always true [-Werror=type-limits] > return (val >= ID_AA64MMFR0_TGRAN64_SUPPORTED_MIN) && > ^~ > > "val" variable type is "u32" > "#define ID_AA64MMFR0_TGRAN4_SUPPORTED_MIN 0x0" > "#define ID_AA64MMFR0_TGRAN64_SUPPORTED_MIN 0x0" > comparison of val >= 0 is always true. > > If you fix the issue, kindly add following tag where applicable > Reported-by: heyuqiang <heyuqiang1@xxxxxxxxxx> Please provide a valid fix for this if you wish for it to be resolved. thanks, greg k-h
