[PATCH v5 07/12] Maintain memslot version number
in [Kernel]
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From: Gleb Natapov on 19 Jul 2010 11:40 Code that depends on particular memslot layout can track changes and adjust to new layout. Reviewed-by: Rik van Riel <riel(a)redhat.com> Signed-off-by: Gleb Natapov <gleb(a)redhat.com> --- include/linux/kvm_host.h | 1 + virt/kvm/kvm_main.c | 1 + 2 files changed, 2 insertions(+), 0 deletions(-) diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h index c13cc48..c74ffc0 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -177,6 +177,7 @@ struct kvm { raw_spinlock_t requests_lock; struct mutex slots_lock; struct mm_struct *mm; /* userspace tied to this vm */ + u32 memslot_version; struct kvm_memslots *memslots; struct srcu_struct srcu; #ifdef CONFIG_KVM_APIC_ARCHITECTURE diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index b78b794..292514c 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -733,6 +733,7 @@ skip_lpage: slots->memslots[mem->slot] = new; old_memslots = kvm->memslots; rcu_assign_pointer(kvm->memslots, slots); + kvm->memslot_version++; synchronize_srcu_expedited(&kvm->srcu); kvm_arch_commit_memory_region(kvm, mem, old, user_alloc); -- 1.7.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo(a)vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/ |