x86/mm: Initialize PGD cache during mm initialization
authorNadav Amit <nadav.amit@gmail.com>
Sun, 5 May 2019 01:11:24 +0000 (18:11 -0700)
committerIngo Molnar <mingo@kernel.org>
Sun, 5 May 2019 18:32:46 +0000 (20:32 +0200)
commitcaa841360134f863987f2d4f77b8dc2fbb7596f8
treefc3f7b45f92fc38599a509945ee8b6970eb2c3d8
parent3950746d9d8ef981c1cb842384e0e86e8d1aad76
x86/mm: Initialize PGD cache during mm initialization

Poking-mm initialization might require to duplicate the PGD in early
stage. Initialize the PGD cache earlier to prevent boot failures.

Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: Nadav Amit <namit@vmware.com>
Cc: Andy Lutomirski <luto@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: H. Peter Anvin <hpa@zytor.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rick Edgecombe <rick.p.edgecombe@intel.com>
Cc: Rik van Riel <riel@surriel.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Thomas Gleixner <tglx@linutronix.de>
Fixes: 4fc19708b165 ("x86/alternatives: Initialize temporary mm for patching")
Link: http://lkml.kernel.org/r/20190505011124.39692-1-namit@vmware.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
arch/x86/mm/pgtable.c
include/asm-generic/pgtable.h
init/main.c