linux/virt/kvm
Andres Lagar-Cavilla 5712846808 kvm: Fix page ageing bugs
1. We were calling clear_flush_young_notify in unmap_one, but we are
within an mmu notifier invalidate range scope. The spte exists no more
(due to range_start) and the accessed bit info has already been
propagated (due to kvm_pfn_set_accessed). Simply call
clear_flush_young.

2. We clear_flush_young on a primary MMU PMD, but this may be mapped
as a collection of PTEs by the secondary MMU (e.g. during log-dirty).
This required expanding the interface of the clear_flush_young mmu
notifier, so a lot of code has been trivially touched.

3. In the absence of shadow_accessed_mask (e.g. EPT A bit), we emulate
the access bit by blowing the spte. This requires proper synchronizing
with MMU notifier consumers, like every other removal of spte's does.

Signed-off-by: Andres Lagar-Cavilla <andreslc@google.com>
Acked-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-09-24 14:07:58 +02:00
..
arm KVM: ARM: vgic: register kvm_device_ops dynamically 2014-09-17 13:10:09 +02:00
assigned-dev.c virt/kvm/assigned-dev.c: Set 'dev->irq_source_id' to '-1' after free it 2014-08-19 15:12:28 +02:00
async_pf.c kvm: Faults which trigger IO release the mmap_sem 2014-09-24 14:07:54 +02:00
async_pf.h
coalesced_mmio.c KVM: return an error code in kvm_vm_ioctl_register_coalesced_mmio() 2014-01-30 11:56:09 +01:00
coalesced_mmio.h
eventfd.c KVM: EVENTFD: Remove inclusion of irq.h 2014-09-24 12:06:25 +02:00
ioapic.c kvm: ioapic: conditionally delay irq delivery duringeoi broadcast 2014-09-16 14:44:48 +02:00
ioapic.h kvm: ioapic: conditionally delay irq delivery duringeoi broadcast 2014-09-16 14:44:48 +02:00
iodev.h
iommu.c kvm: iommu: fix the third parameter of kvm_iommu_put_pages (CVE-2014-3601) 2014-08-19 15:04:45 +02:00
irq_comm.c KVM: Move all accesses to kvm::irq_routing into irqchip.c 2014-08-05 14:26:20 +02:00
irqchip.c KVM: Move irq notifier implementation into eventfd.c 2014-08-05 14:26:24 +02:00
Kconfig KVM: Give IRQFD its own separate enabling Kconfig option 2014-08-05 14:26:28 +02:00
kvm_main.c kvm: Fix page ageing bugs 2014-09-24 14:07:58 +02:00
vfio.c kvm-vfio: do not use module_init 2014-09-24 14:06:36 +02:00
vfio.h kvm-vfio: do not use module_init 2014-09-24 14:06:36 +02:00