Commit 45ee9d5e97a4 ("KVM: arm/arm64: Check pagesize when allocating a hugepage at Stage 2") lost the check for PMD_SIZE during the backport to 4.9.
Fix this by correcting the condition to detect hugepages during stage 2 allocation.
Fixes: 45ee9d5e97a4 ("KVM: arm/arm64: Check pagesize when allocating a hugepage at Stage 2") Reported-by: Ioana Ciornei ioana.ciornei@nxp.com Signed-off-by: Punit Agrawal punit.agrawal@arm.com Cc: Marc Zyngier marc.zyngier@arm.com Cc: Christoffer Dall christoffer.dall@linaro.org -- Hi Greg,
This patch fixes a commit in the stable tree that was backported from upstream. I am not sure what the tag convention is for such a commit - so sending as a fix.
Thanks, Punit --- arch/arm/kvm/mmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm/kvm/mmu.c b/arch/arm/kvm/mmu.c index 2a35c1963f6d..7f868d9bb5ed 100644 --- a/arch/arm/kvm/mmu.c +++ b/arch/arm/kvm/mmu.c @@ -1284,7 +1284,7 @@ static int user_mem_abort(struct kvm_vcpu *vcpu, phys_addr_t fault_ipa, return -EFAULT; }
- if (vma_kernel_pagesize(vma) && !logging_active) { + if (vma_kernel_pagesize(vma) == PMD_SIZE && !logging_active) { hugetlb = true; gfn = (fault_ipa & PMD_MASK) >> PAGE_SHIFT; } else {