From mboxrd@z Thu Jan 1 00:00:00 1970 From: christoffer.dall@linaro.org (Christoffer Dall) Date: Fri, 23 Jan 2015 11:02:34 +0100 Subject: [GIT PULL 05/36] KVM: Add architecture-defined TLB flush support In-Reply-To: <1422007385-14730-1-git-send-email-christoffer.dall@linaro.org> References: <1422007385-14730-1-git-send-email-christoffer.dall@linaro.org> Message-ID: <1422007385-14730-6-git-send-email-christoffer.dall@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: Mario Smarduch 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 fc0c5e6..3796a21 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 167e8c1..d03bd22 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) { -- 2.1.2.330.g565301e.dirty