Hi Masahiro! On 9/15/20 8:48 AM, Masahiro Yamada wrote: > dc35da16a2e2 is more than two years old (i.e. v4.17) > > Are we discussing a long-standing issue > or something that arose recently? Kernels up to 5.7.0 built fine on ia64 in Debian [1], but I assume that zstd was only recently enabled in Debian's standard kernel. Adrian > [1] https://buildd.debian.org/status/logs.php?pkg=linux&arch=ia64 -- .''`. John Paul Adrian Glaubitz : :' : Debian Developer - glaubitz@xxxxxxxxxx `. `' Freie Universitaet Berlin - glaubitz@xxxxxxxxxxxxxxxxxxx `- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913