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arm64: mmu: drop pXd_present() checks from pXd_free_pYd_table() 

The core code already has a check for pXd_none(), so remove it from the
architecture implementation.

Link: http://lkml.kernel.org/r/1544120495-17438-3-git-send-email-will.deacon@arm.com
Signed-off-by: Will Deacon <will.deacon@arm.com>
Cc: Chintan Pandya <cpandya@codeaurora.org>
Cc: Toshi Kani <toshi.kani@hpe.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Michal Hocko <mhocko@suse.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Will Deacon 2018-12-28 00:37:42 -08:00 committed by Linus Torvalds
parent d239865ac8
commit 9c006972c3
1 changed files with 2 additions and 6 deletions
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8
arch/arm64/mm/mmu.c
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@ -1003,10 +1003,8 @@ int pmd_free_pte_page(pmd_t *pmdp, unsigned long addr)
pmd = READ_ONCE(*pmdp);
if (!pmd_present(pmd))
return 1;
if (!pmd_table(pmd)) {
VM_WARN_ON(!pmd_table(pmd));
VM_WARN_ON(1);
return 1;
}
@ -1026,10 +1024,8 @@ int pud_free_pmd_page(pud_t *pudp, unsigned long addr)
pud = READ_ONCE(*pudp);
if (!pud_present(pud))
return 1;
if (!pud_table(pud)) {
VM_WARN_ON(!pud_table(pud));
VM_WARN_ON(1);
return 1;
}