From fb3925d06c285e1acb248addc5d80b33ea771b0f Mon Sep 17 00:00:00 2001 From: Wanpeng Li Date: Mon, 5 Aug 2019 10:03:22 +0800 Subject: KVM: X86: Use IPI shorthands in kvm guest when support MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit IPI shorthand is supported now by linux apic/x2apic driver, switch to IPI shorthand for all excluding self and all including self destination shorthand in kvm guest, to avoid splitting the target mask into several PV IPI hypercalls. This patch removes the kvm_send_ipi_all() and kvm_send_ipi_allbutself() since the callers in APIC codes have already taken care of apic_use_ipi_shorthand and fallback to ->send_IPI_mask and ->send_IPI_mask_allbutself if it is false. Cc: Thomas Gleixner Cc: Paolo Bonzini Cc: Radim Krčmář Cc: Sean Christopherson Cc: Nadav Amit Signed-off-by: Wanpeng Li Signed-off-by: Paolo Bonzini --- arch/x86/kernel/kvm.c | 12 ------------ 1 file changed, 12 deletions(-) (limited to 'arch/x86/kernel/kvm.c') diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c index 4ab377c9fffe..31b68db02e8d 100644 --- a/arch/x86/kernel/kvm.c +++ b/arch/x86/kernel/kvm.c @@ -502,16 +502,6 @@ static void kvm_send_ipi_mask_allbutself(const struct cpumask *mask, int vector) __send_ipi_mask(local_mask, vector); } -static void kvm_send_ipi_allbutself(int vector) -{ - kvm_send_ipi_mask_allbutself(cpu_online_mask, vector); -} - -static void kvm_send_ipi_all(int vector) -{ - __send_ipi_mask(cpu_online_mask, vector); -} - /* * Set the IPI entry points */ @@ -519,8 +509,6 @@ static void kvm_setup_pv_ipi(void) { apic->send_IPI_mask = kvm_send_ipi_mask; apic->send_IPI_mask_allbutself = kvm_send_ipi_mask_allbutself; - apic->send_IPI_allbutself = kvm_send_ipi_allbutself; - apic->send_IPI_all = kvm_send_ipi_all; pr_info("KVM setup pv IPIs\n"); } -- cgit v1.2.3