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    Subject[PATCH v6 02/18] kvm: arm/arm64: Remove spurious WARN_ON
    Date
    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>
    ---
    virt/kvm/arm/mmu.c | 2 +-
    1 file changed, 1 insertion(+), 1 deletion(-)

    diff --git a/virt/kvm/arm/mmu.c b/virt/kvm/arm/mmu.c
    index ee7ce8fa4a12..4a285d760ce0 100644
    --- a/virt/kvm/arm/mmu.c
    +++ b/virt/kvm/arm/mmu.c
    @@ -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);
    --
    2.19.0
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