The branch stable/13 has been updated by trasz: URL: https://cgit.FreeBSD.org/src/commit/?id=20daa209e4499bb0ba84f75d6fa8dc709fe14624
commit 20daa209e4499bb0ba84f75d6fa8dc709fe14624 Author: Edward Tomasz Napierala <[email protected]> AuthorDate: 2021-06-15 12:01:02 +0000 Commit: Edward Tomasz Napierala <[email protected]> CommitDate: 2022-02-14 00:08:11 +0000 linux: implement set_upcall on aarch64 This fixes "git diff" (git-1:2.25.1-1ubuntu3). Sponsored By: EPSRC Differential Revision: https://reviews.freebsd.org/D30509 (cherry picked from commit e505c3066bbdb96dd28ff4634a315346490b9b33) --- sys/arm64/linux/linux_machdep.c | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/sys/arm64/linux/linux_machdep.c b/sys/arm64/linux/linux_machdep.c index 711ccb4fd63d..80597a2922a7 100644 --- a/sys/arm64/linux/linux_machdep.c +++ b/sys/arm64/linux/linux_machdep.c @@ -52,7 +52,6 @@ __FBSDID("$FreeBSD$"); LIN_SDT_PROVIDER_DECLARE(LINUX_DTRACE); /* DTrace probes */ -LIN_SDT_PROBE_DEFINE0(machdep, linux_set_upcall, todo); LIN_SDT_PROBE_DEFINE0(machdep, linux_mmap2, todo); LIN_SDT_PROBE_DEFINE0(machdep, linux_rt_sigsuspend, todo); LIN_SDT_PROBE_DEFINE0(machdep, linux_sigaltstack, todo); @@ -84,13 +83,19 @@ linux_execve(struct thread *td, struct linux_execve_args *uap) return (error); } -/* LINUXTODO: implement (or deduplicate) arm64 linux_set_upcall */ int linux_set_upcall(struct thread *td, register_t stack) { - LIN_SDT_PROBE0(machdep, linux_set_upcall, todo); - return (EDOOFUS); + if (stack) + td->td_frame->tf_sp = stack; + + /* + * The newly created Linux thread returns + * to the user space by the same path that a parent does. + */ + td->td_frame->tf_x[0] = 0; + return (0); } /* LINUXTODO: deduplicate arm64 linux_mmap2 */
