From: Benjamin Herrenschmidt Date: Tue, 5 Jul 2016 05:03:46 +0000 (+1000) Subject: powerpc: Add comment explaining the purpose of setup_kdump_trampoline() X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=63c254a501049f70c53aea602525c6912362079e;p=deliverable%2Flinux.git powerpc: Add comment explaining the purpose of setup_kdump_trampoline() 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 [mpe: Fix comment formatting] Signed-off-by: Michael Ellerman --- diff --git a/arch/powerpc/kernel/setup_64.c b/arch/powerpc/kernel/setup_64.c index 5530bb55a78b..98f72c6d0ebc 100644 --- a/arch/powerpc/kernel/setup_64.c +++ b/arch/powerpc/kernel/setup_64.c @@ -279,10 +279,12 @@ 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();