[PATCH v2 0/2] KVM: Fix refaulting due to page table update

Punit Agrawal
2018-08-13T09:40:47Z

Hi,

Here's a couple of patches to fix an issue when multiple vcpus fault
on a page table entry[0]. The issue was reported by a user when testing
PUD hugepage support[1] but also exists for PMD and PTE updates though
with a lower probability.

In this version -

* the fix has been split for PMD hugepage and PTE update
* refactored the PMD fix
* applied fixes tag and cc'ing to stable

Thanks,
Punit

[0] https://lkml.org/lkml/2018/8/10/256
[1] https://lkml.org/lkml/2018/7/16/482

Punit Agrawal (2):
KVM: arm/arm64: Skip updating PMD entry if no change
KVM: arm/arm64: Skip updating PTE entry if no change

virt/kvm/arm/mmu.c | 45 ++++++++++++++++++++++++++++++++++-----------
1 file changed, 34 insertions(+), 11 deletions(-)

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2.18.0