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kvm: arm/arm64: Remove spurious WARN_ON 

On a 4-level page table pgd entry can be empty, unlike a 3-level
page table. Remove the spurious WARN_ON() in stage_get_pud().

Acked-by: Christoffer Dall <cdall@kernel.org>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
hifive-unleashed-5.1
Suzuki K Poulose 2018-09-26 17:32:38 +01:00 committed by Marc Zyngier
parent d2db7773ba
commit 7788a28062
1 changed files with 1 additions and 1 deletions
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2
virt/kvm/arm/mmu.c
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@ -1005,7 +1005,7 @@ static pud_t *stage2_get_pud(struct kvm *kvm, struct kvm_mmu_memory_cache *cache
pud_t *pud;
pgd = kvm->arch.pgd + stage2_pgd_index(addr);
if (WARN_ON(stage2_pgd_none(*pgd))) {
if (stage2_pgd_none(*pgd)) {
if (!cache)
return NULL;
pud = mmu_memory_cache_alloc(cache);