From 366baf28ee3fc22dea504a0bddf8edd1e9bcee70 Mon Sep 17 00:00:00 2001 From: Alexey Kardashevskiy Date: Mon, 15 Feb 2016 12:55:05 +1100 Subject: KVM: PPC: Use RCU for arch.spapr_tce_tables At the moment only spapr_tce_tables updates are protected against races but not lookups. This fixes missing protection by using RCU for the list. As lookups also happen in real mode, this uses list_for_each_entry_lockless() (which is expected not to access any vmalloc'd memory). This converts release_spapr_tce_table() to a RCU scheduled handler. Signed-off-by: Alexey Kardashevskiy Reviewed-by: David Gibson Signed-off-by: Paul Mackerras --- arch/powerpc/kvm/book3s.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/powerpc/kvm/book3s.c') diff --git a/arch/powerpc/kvm/book3s.c b/arch/powerpc/kvm/book3s.c index 638c6d9be9e0..b34220d2aa42 100644 --- a/arch/powerpc/kvm/book3s.c +++ b/arch/powerpc/kvm/book3s.c @@ -807,7 +807,7 @@ int kvmppc_core_init_vm(struct kvm *kvm) { #ifdef CONFIG_PPC64 - INIT_LIST_HEAD(&kvm->arch.spapr_tce_tables); + INIT_LIST_HEAD_RCU(&kvm->arch.spapr_tce_tables); INIT_LIST_HEAD(&kvm->arch.rtas_tokens); #endif -- cgit