kernel-ark/virt/kvm
Takuya Yoshikawa b3ae209697 KVM: Introduce kvm_unmap_hva_range() for kvm_mmu_notifier_invalidate_range_start()
When we tested KVM under memory pressure, with THP enabled on the host,
we noticed that MMU notifier took a long time to invalidate huge pages.

Since the invalidation was done with mmu_lock held, it not only wasted
the CPU but also made the host harder to respond.

This patch mitigates this by using kvm_handle_hva_range().

Signed-off-by: Takuya Yoshikawa <yoshikawa.takuya@oss.ntt.co.jp>
Cc: Alexander Graf <agraf@suse.de>
Cc: Paul Mackerras <paulus@samba.org>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
2012-07-18 16:55:04 -03:00
..
assigned-dev.c KVM: Convert intx_mask_lock to spin lock 2012-03-20 12:41:24 +02:00
async_pf.c KVM: fix the race while wakeup all pv guest 2011-01-12 11:29:03 +02:00
async_pf.h KVM: Halt vcpu if page it tries to access is swapped out 2011-01-12 11:21:39 +02:00
coalesced_mmio.c KVM: make checks stricter in coalesced_mmio_in_range() 2011-12-27 11:17:07 +02:00
coalesced_mmio.h KVM: Make coalesced mmio use a device per zone 2011-09-25 19:17:57 +03:00
eventfd.c KVM: Intelligent device lookup on I/O bus 2011-09-25 19:17:59 +03:00
ioapic.c KVM: dont clear TMR on EOI 2012-04-16 20:36:38 -03:00
ioapic.h KVM: dont clear TMR on EOI 2012-04-16 20:36:38 -03:00
iodev.h KVM: remove in_range from io devices 2009-09-10 08:33:05 +03:00
iommu.c KVM: lock slots_lock around device assignment 2012-04-19 00:04:18 -03:00
irq_comm.c KVM: Introduce direct MSI message injection for in-kernel irqchips 2012-04-24 15:59:47 +03:00
Kconfig KVM: Introduce direct MSI message injection for in-kernel irqchips 2012-04-24 15:59:47 +03:00
kvm_main.c KVM: Introduce kvm_unmap_hva_range() for kvm_mmu_notifier_invalidate_range_start() 2012-07-18 16:55:04 -03:00