Hi aarch64 maintainers, Sorry to noise you again.
We(HiSilicon) next generation CPU core will support "ARMv8.4-TLBI, TLB maintenance and TLB range instructions" feature, so I try to compile it that tlbi rvae1is is replaced in linux kernel which is in my local branch, there are some error messages: /tmp/ccD5TFDe.s: Assembler messages: /tmp/ccD5TFDe.s:991: Error: unknown or missing operation name at operand 1 -- `tlbi rvae1is,x0' /tmp/ccD5TFDe.s:1012: Error: unknown or missing operation name at operand 1 -- `tlbi rvae1is,x0' /tmp/ccD5TFDe.s:1794: Error: unknown or missing operation name at operand 1 -- `tlbi rvae1is,x0' /tmp/ccD5TFDe.s:1815: Error: unknown or missing operation name at operand 1 -- `tlbi rvae1is,x0' /tmp/ccD5TFDe.s:2398: Error: unknown or missing operation name at operand 1 -- `tlbi rvae1is,x0' /tmp/ccD5TFDe.s:2419: Error: unknown or missing operation name at operand 1 -- `tlbi rvae1is,x0' /tmp/ccD5TFDe.s:3155: Error: unknown or missing operation name at operand 1 -- `tlbi rvae1is,x0' /tmp/ccD5TFDe.s:3176: Error: unknown or missing operation name at operand 1 -- `tlbi rvae1is,x0' /tmp/ccD5TFDe.s:1016: Error: attempt to move .org backwards /tmp/ccD5TFDe.s:1819: Error: attempt to move .org backwards /tmp/ccD5TFDe.s:2423: Error: attempt to move .org backwards /tmp/ccD5TFDe.s:3180: Error: attempt to move .org backwards make[2]: *** [arch/arm64/mm/hugetlbpage.o] Error 1 make[1]: *** [arch/arm64/mm] Error 2 make: *** [sub-make] Error 2 GCC version is as follow: gcc (GCC) 9.2.0 Copyright (C) 2019 Free Software Foundation, Inc. This is free software; see the source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. It seems that GCC doesn't support this new instruction and I checked that LLVM has already supported this instruction, https://github.com/llvm-mirror/llvm/blob/master/lib/Target/AArch64/AArch64SystemOperands.td So my question is that does GCC have the plan to support this instruction recently? If not, can you give me some suggestion to do it? I'm not the expert on it ;-) Thanks in advance, Shaokun
