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authorAnshuman Khandual <anshuman.khandual@arm.com>2019-03-12 18:55:45 +0530
committerWill Deacon <will.deacon@arm.com>2019-04-09 11:21:50 +0100
commit14b94d07572619af896c6d2d83b1196c4041fe19 (patch)
tree73494f1e7c6ca1a5790a3a7ef1b5dffd913ea3a5 /virt
parent369aaab845a65b90ceac2801edd577fae442476c (diff)
downloadlinux-14b94d07572619af896c6d2d83b1196c4041fe19.tar.bz2
KVM: ARM: Remove pgtable page standard functions from stage-2 page tables
ARM64 standard pgtable functions are going to use pgtable_page_[ctor|dtor] or pgtable_pmd_page_[ctor|dtor] constructs. At present KVM guest stage-2 PUD|PMD|PTE level page tabe pages are allocated with __get_free_page() via mmu_memory_cache_alloc() but released with standard pud|pmd_free() or pte_free_kernel(). These will fail once they start calling into pgtable_ [pmd]_page_dtor() for pages which never originally went through respective constructor functions. Hence convert all stage-2 page table page release functions to call buddy directly while freeing pages. Reviewed-by: Suzuki K Poulose <suzuki.poulose@arm.com> Acked-by: Yu Zhao <yuzhao@google.com> Acked-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com> Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'virt')
-rw-r--r--virt/kvm/arm/mmu.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/virt/kvm/arm/mmu.c b/virt/kvm/arm/mmu.c
index 27c958306449..ad90ea3e5558 100644
--- a/virt/kvm/arm/mmu.c
+++ b/virt/kvm/arm/mmu.c
@@ -189,7 +189,7 @@ static void clear_stage2_pmd_entry(struct kvm *kvm, pmd_t *pmd, phys_addr_t addr
VM_BUG_ON(pmd_thp_or_huge(*pmd));
pmd_clear(pmd);
kvm_tlb_flush_vmid_ipa(kvm, addr);
- pte_free_kernel(NULL, pte_table);
+ free_page((unsigned long)pte_table);
put_page(virt_to_page(pmd));
}