According to Linux commit 0136611c62 ("optimize hweight64 for x86_64")
this is a further improvement over the variant using only bitwise
operations. It's also a slight further code size reduction.Suggested-by: Andrew Cooper <[email protected]> Signed-off-by: Jan Beulich <[email protected]> --- a/xen/arch/x86/Kconfig +++ b/xen/arch/x86/Kconfig @@ -12,6 +12,7 @@ config X86 select HAS_CPUFREQ select HAS_EHCI select HAS_EX_TABLE + select HAS_FAST_MULTIPLY select HAS_GDBSX select HAS_IOPORTS select HAS_KEXEC _______________________________________________ Xen-devel mailing list [email protected] https://lists.xenproject.org/mailman/listinfo/xen-devel
