Hi all, Today's linux-next merge of the tip tree got a conflict in: arch/arm64/kernel/perf_callchain.c between commit: ed876d35a1dc7 ("arm64: Make perf_callchain_kernel() use arch_stack_walk()") from the arm64 tree and commit: 1c3430516b073 ("perf: Add wrappers for invoking guest callbacks") from the tip tree. I fixed it up (see below) and can carry the fix as necessary. This is now fixed as far as linux-next is concerned, but any non trivial conflicts should be mentioned to your upstream maintainer when your tree is submitted for merging. You may also want to consider cooperating with the maintainer of the conflicting tree to minimise any particularly complex conflicts. diff --cc arch/arm64/kernel/perf_callchain.c index e9b7d99f4e3a0,db04a55cee7e0..0000000000000 --- a/arch/arm64/kernel/perf_callchain.c +++ b/arch/arm64/kernel/perf_callchain.c @@@ -141,7 -147,9 +141,7 @@@ static bool callchain_trace(void *data void perf_callchain_kernel(struct perf_callchain_entry_ctx *entry, struct pt_regs *regs) { - if (perf_guest_cbs && perf_guest_cbs->is_in_guest()) { - struct stackframe frame; - + if (perf_guest_state()) { /* We don't support guest os callchain now */ return; }