diff options
| author | Michael Ellerman <mpe@ellerman.id.au> | 2017-07-31 20:20:29 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2017-07-31 20:20:29 +1000 |
| commit | bb272221e9db79f13d454e1f3fb6b05013be985e (patch) | |
| tree | 36f4acc50e3fabac71fadd34c720c0a6011db470 /mm/kasan/kasan_init.c | |
| parent | 253fd51e2f533552ae35a0c661705da6c4842c1b (diff) | |
| parent | 5771a8c08880cdca3bfb4a3fc6d309d6bba20877 (diff) | |
Merge tag 'v4.13-rc1' into fixes
The fixes branch is based off a random pre-rc1 commit, because we had
some fixes that needed to go in before rc1 was released.
However we now need to fix some code that went in after that point, but
before rc1, so merge rc1 to get that code into fixes so we can fix it!
Diffstat (limited to 'mm/kasan/kasan_init.c')
| -rw-r--r-- | mm/kasan/kasan_init.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/mm/kasan/kasan_init.c b/mm/kasan/kasan_init.c index b96a5f773d88..554e4c0f23a2 100644 --- a/mm/kasan/kasan_init.c +++ b/mm/kasan/kasan_init.c @@ -118,6 +118,18 @@ static void __init zero_p4d_populate(pgd_t *pgd, unsigned long addr, do { next = p4d_addr_end(addr, end); + if (IS_ALIGNED(addr, P4D_SIZE) && end - addr >= P4D_SIZE) { + pud_t *pud; + pmd_t *pmd; + + p4d_populate(&init_mm, p4d, lm_alias(kasan_zero_pud)); + pud = pud_offset(p4d, addr); + pud_populate(&init_mm, pud, lm_alias(kasan_zero_pmd)); + pmd = pmd_offset(pud, addr); + pmd_populate_kernel(&init_mm, pmd, + lm_alias(kasan_zero_pte)); + continue; + } if (p4d_none(*p4d)) { p4d_populate(&init_mm, p4d, |