| From | Greg Kroah-Hartman <> | Subject | [PATCH 4.9 55/56] KVM: arm/arm64: Fix check for hugepage size when allocating at Stage 2 | Date | Fri, 2 Mar 2018 09:51:41 +0100 |
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4.9-stable review patch. If anyone has any objections, please let me know.
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From: Punit Agrawal <punit.agrawal@arm.com>
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> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- arch/arm/kvm/mmu.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/arm/kvm/mmu.c +++ b/arch/arm/kvm/mmu.c @@ -1284,7 +1284,7 @@ static int user_mem_abort(struct kvm_vcp 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 {
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