]> git.proxmox.com Git - mirror_ubuntu-jammy-kernel.git/commit
x86/boot: Defer setup_real_mode() to early_initcall time
authorAndy Lutomirski <luto@kernel.org>
Wed, 10 Aug 2016 09:29:15 +0000 (02:29 -0700)
committerIngo Molnar <mingo@kernel.org>
Thu, 11 Aug 2016 09:15:00 +0000 (11:15 +0200)
commitd0de0f685db7faf2ae4597a39a59996dd84e18c7
tree9081568ab626b5302dffbf31aac1b7b0dfead471
parent18bc7bd523e0fc5be8d76bf84bde733a97a8c375
x86/boot: Defer setup_real_mode() to early_initcall time

There's no need to run setup_real_mode() as early as we run it.
Defer it to the same early_initcall that sets up the page
permissions for the real mode code.

This should be a code size reduction.  More importantly, it give us
a longer window in which we can allocate the real mode trampoline.

Signed-off-by: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Brian Gerst <brgerst@gmail.com>
Cc: Denys Vlasenko <dvlasenk@redhat.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mario Limonciello <mario_limonciello@dell.com>
Cc: Matt Fleming <mfleming@suse.de>
Cc: Matthew Garrett <mjg59@srcf.ucam.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Link: http://lkml.kernel.org/r/fd62f0da4f79357695e9bf3e365623736b05f119.1470821230.git.luto@kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
arch/x86/include/asm/realmode.h
arch/x86/kernel/setup.c
arch/x86/realmode/init.c