From a6d5101661c88d642b1fc85657fb0c58da821aa7 Mon Sep 17 00:00:00 2001 From: Mario Smarduch Date: Thu, 15 Jan 2015 15:58:52 -0800 Subject: [PATCH] KVM: Add architecture-defined TLB flush support Allow architectures to override the generic kvm_flush_remote_tlbs() function via HAVE_KVM_ARCH_TLB_FLUSH_ALL. ARMv7 will need this to provide its own TLB flush interface. Reviewed-by: Christoffer Dall Reviewed-by: Marc Zyngier Reviewed-by: Paolo Bonzini Signed-off-by: Mario Smarduch --- virt/kvm/Kconfig | 3 +++ virt/kvm/kvm_main.c | 2 ++ 2 files changed, 5 insertions(+) diff --git a/virt/kvm/Kconfig b/virt/kvm/Kconfig index fc0c5e603eb4..3796a2132a06 100644 --- a/virt/kvm/Kconfig +++ b/virt/kvm/Kconfig @@ -37,3 +37,6 @@ config HAVE_KVM_CPU_RELAX_INTERCEPT config KVM_VFIO bool + +config HAVE_KVM_ARCH_TLB_FLUSH_ALL + bool diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c index 167e8c14b143..d03bd2255801 100644 --- a/virt/kvm/kvm_main.c +++ b/virt/kvm/kvm_main.c @@ -176,6 +176,7 @@ bool kvm_make_all_cpus_request(struct kvm *kvm, unsigned int req) return called; } +#ifndef CONFIG_HAVE_KVM_ARCH_TLB_FLUSH_ALL void kvm_flush_remote_tlbs(struct kvm *kvm) { long dirty_count = kvm->tlbs_dirty; @@ -186,6 +187,7 @@ void kvm_flush_remote_tlbs(struct kvm *kvm) cmpxchg(&kvm->tlbs_dirty, dirty_count, 0); } EXPORT_SYMBOL_GPL(kvm_flush_remote_tlbs); +#endif void kvm_reload_remote_mmus(struct kvm *kvm) { -- 2.20.1