Linux kernel stable tree (mirror) https://git.radix-linux.su/kernel/linux.git/atom?h=v6.3 2021-05-14T06:50:28+00:00 2021-05-14T06:50:28+00:00 Ingo Molnar mingo@kernel.org 2021-05-13T11:41:41+00:00 urn:sha1:41f45fb045bcc20e71eb705b361356e715682162 Stephen Rothwell reported that the objtool cross-build breaks on non-x86 hosts: > tools/arch/x86/include/asm/asm.h:185:24: error: invalid register name for 'current_stack_pointer' > 185 | register unsigned long current_stack_pointer asm(_ASM_SP); > | ^~~~~~~~~~~~~~~~~~~~~ The PowerPC host obviously doesn't know much about x86 register names. Protect the kernel-specific bits of <asm/asm.h>, so that it can be included by tooling and cross-built. Reported-by: Stephen Rothwell <sfr@canb.auug.org.au> Reviewed-by: H. Peter Anvin <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> 2021-05-10T10:33:28+00:00 H. Peter Anvin (Intel) hpa@zytor.com 2021-05-10T09:09:40+00:00 urn:sha1:eef23e72b78b36924aea8be5ec7c54e628c442ef Use the new generalized _ASM_BYTES() macro from <asm/asm.h> instead of the "home grown" _ASM_MK_NOP() in <asm/nops.h>. Add <asm/asm.h> and update <asm/nops.h> in the tools directory... Signed-off-by: H. Peter Anvin (Intel) <hpa@zytor.com> Signed-off-by: Ingo Molnar <mingo@kernel.org> Link: https://lore.kernel.org/r/20210510090940.924953-4-hpa@zytor.com