On 2011-01-04 11:42, Jan Kiszka wrote: > Am 10.12.2010 19:44, Chris Wright wrote: >> * Jan Kiszka (jan.kiszka@xxxxxxxxxxx) wrote: >>>>>> --- a/drivers/pci/intel-iommu.c >>>>>> +++ b/drivers/pci/intel-iommu.c >>>>>> @@ -3627,9 +3627,9 @@ static int intel_iommu_attach_device(struct >>>>>> iommu_domain *domain, >>>>>> >>>>>> pte = dmar_domain->pgd; >>>>>> if (dma_pte_present(pte)) { >>>>>> - free_pgtable_page(dmar_domain->pgd); >>>>>> dmar_domain->pgd = (struct dma_pte *) >>>>>> phys_to_virt(dma_pte_addr(pte)); >> >> While here, might as well remove the unnecessary cast. >> >>>>>> + free_pgtable_page(pte); >>>>>> } >>>>>> dmar_domain->agaw--; >>>>>> } >>>>> >>>>> Reviewed-by: Sheng Yang <sheng@xxxxxxxxxxxxxxx> >> >> Acked-by: Chris Wright <chrisw@xxxxxxxxxxxx> >> >>>>> CC iommu mailing list and David. >>>> >>>> Ping... >>>> >>>> I think this fix also qualifies for stable (.35 and .36). >>>> >>> >>> Still not merged? >> >> David, do you plan to pick this one up? >> >> thanks, >> -chris > > Hmm, still no reaction. Trying David's Intel address now... > > Jan > Walking through my old queues, I came across this one again. Given the still lacking reaction from the official maintainer, I'm a bit confused about the state of intel-iommu. Is it unmaintained? Should this bug fix better be routed through the KVM tree as its only in-tree user? Please enlighten me. Note that the patch became stable material for 35..38 in the meantime, and it should go into 39 before release as well. Thanks, Jan -------8<-------- Obtain the new pgd pointer before releasing the page containing this value. Remove unneeded cast at this chance as well. Signed-off-by: Jan Kiszka <jan.kiszka@xxxxxxxxxxx> --- drivers/pci/intel-iommu.c | 5 ++--- 1 files changed, 2 insertions(+), 3 deletions(-) v1->v2: Clean up cast as suggested by Chris. diff --git a/drivers/pci/intel-iommu.c b/drivers/pci/intel-iommu.c index 505c1c7..b3e5c43 100644 --- a/drivers/pci/intel-iommu.c +++ b/drivers/pci/intel-iommu.c @@ -3607,9 +3607,8 @@ static int intel_iommu_attach_device(struct iommu_domain *domain, pte = dmar_domain->pgd; if (dma_pte_present(pte)) { - free_pgtable_page(dmar_domain->pgd); - dmar_domain->pgd = (struct dma_pte *) - phys_to_virt(dma_pte_addr(pte)); + dmar_domain->pgd = phys_to_virt(dma_pte_addr(pte)); + free_pgtable_page(pte); } dmar_domain->agaw--; } -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html