[PATCH] KVM: arm64: Fix detection of shared VMAs on guest fault

[Marc Zyngier]

When merging the KVM MTE support, the blob that was interposed between
the chair and the keyboard experienced a neuronal accident (also known
as a brain fart), turning a check for VM_SHARED into VM_PFNMAP as it
was reshuffling some of the code.

The blob having now come back to its senses, let's restore the
initial check that the original author got right the first place.

Fixes: ea7fc1bb1cd1 ("KVM: arm64: Introduce MTE VM feature")
Cc: Steven Price <steven.price at arm.com>
Cc: Catalin Marinas <catalin.marinas at arm.com>
Signed-off-by: Marc Zyngier <maz at kernel.org>
---
 arch/arm64/kvm/mmu.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/kvm/mmu.c b/arch/arm64/kvm/mmu.c
index 3155c9e778f0..0625bf2353c2 100644
--- a/arch/arm64/kvm/mmu.c
+++ b/arch/arm64/kvm/mmu.c
@@ -947,7 +947,7 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa,
 		vma_shift = get_vma_page_shift(vma, hva);
 	}
 
-	shared = (vma->vm_flags & VM_PFNMAP);
+	shared = (vma->vm_flags & VM_SHARED);
 
 	switch (vma_shift) {
 #ifndef __PAGETABLE_PMD_FOLDED
-- 
2.30.2