From 810b5c49ebfb3398a8d9a89dedba6b97cb8688b1 Mon Sep 17 00:00:00 2001 From: Ian Moffett Date: Wed, 15 Oct 2025 19:02:52 -0400 Subject: kern/amd64: Introduce kernel threads Introduces kernel threads. by using the proc_ktd() function, one can spawn a CPL 0 running thread to the desired code. Signed-off-by: Ian Moffett --- src/sys/arch/amd64/os/os_proc.c | 10 ++++++++-- 1 file changed, 8 insertions(+), 2 deletions(-) (limited to 'src/sys/arch/amd64/os/os_proc.c') diff --git a/src/sys/arch/amd64/os/os_proc.c b/src/sys/arch/amd64/os/os_proc.c index 93e5d73..c658547 100644 --- a/src/sys/arch/amd64/os/os_proc.c +++ b/src/sys/arch/amd64/os/os_proc.c @@ -112,8 +112,14 @@ md_proc_init(struct proc *procp, int flags) return error; } - ds = USER_DS | 3; - cs = USER_CS | 3; + if (ISSET(flags, SPAWN_KTD)) { + ds = KERNEL_DS; + cs = KERNEL_CS; + procp->flags |= PROC_KTD; + } else { + ds = USER_DS | 3; + cs = USER_CS | 3; + } /* * Set up the mapping specifier, we'll use zero -- cgit v1.2.3