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| author | Nadav Amit <nadav.amit@gmail.com> | 2019-05-04 18:11:24 -0700 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2019-05-05 20:32:46 +0200 |
| commit | caa841360134f863987f2d4f77b8dc2fbb7596f8 (patch) | |
| tree | fc3f7b45f92fc38599a509945ee8b6970eb2c3d8 /init | |
| parent | 3950746d9d8ef981c1cb842384e0e86e8d1aad76 (diff) | |
| download | lwn-caa841360134f863987f2d4f77b8dc2fbb7596f8.tar.gz lwn-caa841360134f863987f2d4f77b8dc2fbb7596f8.zip | |
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>
Diffstat (limited to 'init')
| -rw-r--r-- | init/main.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/init/main.c b/init/main.c index 95dd9406ee31..9dc2f3b4f753 100644 --- a/init/main.c +++ b/init/main.c @@ -506,6 +506,8 @@ void __init __weak mem_encrypt_init(void) { } void __init __weak poking_init(void) { } +void __init __weak pgd_cache_init(void) { } + bool initcall_debug; core_param(initcall_debug, initcall_debug, bool, 0644); @@ -537,6 +539,7 @@ static void __init mm_init(void) init_espfix_bsp(); /* Should be run after espfix64 is set up. */ pti_init(); + pgd_cache_init(); } void __init __weak arch_call_rest_init(void) |