diff options
| author | Kirill A. Shutemov <kirill.shutemov@linux.intel.com> | 2018-02-14 21:25:37 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2018-02-16 10:48:47 +0100 |
| commit | a7412546d8cb5ad578805060b4006f2a021b5868 (patch) | |
| tree | 0e3acee1e6ba38ec70492d0dd9a1fa9095dd8bb5 /arch/x86/mm/kaslr.c | |
| parent | 4fa5662b6b49611f11856db8be346710217473ef (diff) | |
| download | linux-a7412546d8cb5ad578805060b4006f2a021b5868.tar.bz2 | |
x86/mm: Adjust vmalloc base and size at boot-time
vmalloc area has different placement and size 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/20180214182542.69302-5-kirill.shutemov@linux.intel.com
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'arch/x86/mm/kaslr.c')
| -rw-r--r-- | arch/x86/mm/kaslr.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/mm/kaslr.c b/arch/x86/mm/kaslr.c index 7828a7ca3bba..641169d38184 100644 --- a/arch/x86/mm/kaslr.c +++ b/arch/x86/mm/kaslr.c @@ -50,7 +50,7 @@ static __initdata struct kaslr_memory_region { unsigned long size_tb; } kaslr_regions[] = { { &page_offset_base, 0 }, - { &vmalloc_base, VMALLOC_SIZE_TB }, + { &vmalloc_base, 0 }, { &vmemmap_base, 1 }, }; @@ -94,6 +94,7 @@ void __init kernel_randomize_memory(void) return; kaslr_regions[0].size_tb = 1 << (__PHYSICAL_MASK_SHIFT - TB_SHIFT); + kaslr_regions[1].size_tb = VMALLOC_SIZE_TB; /* * Update Physical memory mapping to available and |