From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail172.messagelabs.com (mail172.messagelabs.com [216.82.254.3]) by kanga.kvack.org (Postfix) with SMTP id 7C0406007D8 for ; Tue, 5 Jan 2010 09:13:10 -0500 (EST) From: Gleb Natapov Subject: [PATCH v3 07/12] Maintain memslot version number Date: Tue, 5 Jan 2010 16:12:49 +0200 Message-Id: <1262700774-1808-8-git-send-email-gleb@redhat.com> In-Reply-To: <1262700774-1808-1-git-send-email-gleb@redhat.com> References: <1262700774-1808-1-git-send-email-gleb@redhat.com> Sender: owner-linux-mm@kvack.org To: kvm@vger.kernel.org Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, avi@redhat.com, mingo@elte.hu, a.p.zijlstra@chello.nl, tglx@linutronix.de, hpa@zytor.com, riel@redhat.com, cl@linux-foundation.org List-ID: Code that depends on particular memslot layout can track changes and adjust to new layout. Signed-off-by: Gleb Natapov --- 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 600baf0..3f5ebc2 100644 --- a/include/linux/kvm_host.h +++ b/include/linux/kvm_host.h @@ -163,6 +163,7 @@ struct kvm { 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 a5077df..df3325c 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -737,6 +737,7 @@ 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); -- 1.6.5 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org