x86/mm: Initialize vmemmap_base at boot-time
authorKirill A. Shutemov <kirill.shutemov@linux.intel.com>
Wed, 14 Feb 2018 18:25:38 +0000 (21:25 +0300)
committerIngo Molnar <mingo@kernel.org>
Fri, 16 Feb 2018 09:48:48 +0000 (10:48 +0100)
commit9b46a051e43461a9afda2bdd50e0e0ae349341df
tree39e80f136ef137e28e1e9f4bf9466c098069b1c8
parenta7412546d8cb5ad578805060b4006f2a021b5868
x86/mm: Initialize vmemmap_base at boot-time

vmemmap area has different placement depending on paging mode.
Let's adjust it during early boot accodring to machine capability.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Arjan van de Ven <arjan@linux.intel.com>
Cc: Borislav Petkov <bp@suse.de>
Cc: Dan Williams <dan.j.williams@intel.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: David Woodhouse <dwmw2@infradead.org>
Cc: Josh Poimboeuf <jpoimboe@redhat.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-mm@kvack.org
Link: http://lkml.kernel.org/r/20180214182542.69302-6-kirill.shutemov@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
arch/x86/include/asm/pgtable_64_types.h
arch/x86/kernel/head64.c