The patches fixes race conditions in stage2 pgd accesses. Patch 1 is a fix up for the patch which has already been pushed to kvmarm/master. Patch 2 fixes a case where stage2 PGD could be free'd when we release the kvm->mmu_lock to prevent VCPU starvation. Applies on kvmarm/master tree Changes since V2: http://lists.infradead.org/pipermail/linux-arm-kernel/2017-May/504401.html - Patch 1 in V2 has been pushed to kvmarm/master. Added a fixup to the original patch to make sure we don't use cached stage2 pgd. - Patch 2: Handle cases where unmap_stage2_range may be called without checking the validity of stage2 pgd. Changes since v1: http://lists.infradead.org/pipermail/linux-arm-kernel/2017-April/502867.html - Dropped patch for fixing mmu_notifier race condition, which couldn't be reproduced. - Added reviewed-by from Christoffer - Added new patch to fix another race condition Suzuki K Poulose (2): kvm: arm/arm64: Force reading uncached stage2 PGD kvm: arm/arm64: Fix use after free of stage2 page table virt/kvm/arm/mmu.c | 19 ++++++++++++++----- 1 file changed, 14 insertions(+), 5 deletions(-) -- 2.7.4
