[PATCH 10/38] powerpc: Add comment explaining the purpose of setup_kdump_trampoline()
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: 2016-06-27 11:30:31
Subsystem:
linux for powerpc (32-bit and 64-bit), the rest · Maintainers:
Madhavan Srinivasan, Linus Torvalds
Anything in early_setup() needs to be justified to be there, in this case, we need the trampolines before we can take exceptions and thus before we turn on the MMU. Also remove a pretty meaningless and misplaced debug message Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> --- arch/powerpc/kernel/setup_64.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c
index e1b2e6f..a641753 100644
--- a/arch/powerpc/kernel/setup_64.c
+++ b/arch/powerpc/kernel/setup_64.c@@ -276,10 +276,11 @@ void __init early_setup(unsigned long dt_ptr) /* Probe the machine type */ probe_machine(); + /* Setup the trampolines from the lowmem exception vectors + * to the kdump kernel when not using a relocatable kernel. + */ setup_kdump_trampoline(); - DBG("Found, Initializing memory management...\n"); - /* Initialize the hash table or TLB handling */ early_init_mmu();
--
2.7.4