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[Qemu-devel] [PATCH v3 05/20] kvm: arm/arm64: Fix stage2_flush_memslot f


From: Suzuki K Poulose
Subject: [Qemu-devel] [PATCH v3 05/20] kvm: arm/arm64: Fix stage2_flush_memslot for 4 level page table
Date: Fri, 29 Jun 2018 12:15:25 +0100

So far we have only supported 3 level page table with fixed IPA of 40bits.
Fix stage2_flush_memslot() to accommodate for 4 level tables.

Cc: Marc Zyngier <address@hidden>
Acked-by: Christoffer Dall <address@hidden>
Signed-off-by: Suzuki K Poulose <address@hidden>
---
 virt/kvm/arm/mmu.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/virt/kvm/arm/mmu.c b/virt/kvm/arm/mmu.c
index 1d90d79..061e6b3 100644
--- a/virt/kvm/arm/mmu.c
+++ b/virt/kvm/arm/mmu.c
@@ -379,7 +379,8 @@ static void stage2_flush_memslot(struct kvm *kvm,
        pgd = kvm->arch.pgd + stage2_pgd_index(addr);
        do {
                next = stage2_pgd_addr_end(addr, end);
-               stage2_flush_puds(kvm, pgd, addr, next);
+               if (!stage2_pgd_none(*pgd))
+                       stage2_flush_puds(kvm, pgd, addr, next);
        } while (pgd++, addr = next, addr != end);
 }
 
-- 
2.7.4




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