From fb78e58c275599a961557bca201dd897565833ca Mon Sep 17 00:00:00 2001 From: Konrad Rzeszutek Wilk Date: Mon, 26 Aug 2013 14:28:50 -0400 Subject: [PATCH] Revert "xen/spinlock: Disable IRQ spinlock (PV) allocation on PVHVM" This reverts commit 70dd4998cb85f0ecd6ac892cc7232abefa432efb. Now that the bugs have been resolved we can re-enable the PV ticketlock implementation under PVHVM Xen guests. Signed-off-by: Konrad Rzeszutek Wilk Reviewed-by: David Vrabel --- arch/x86/xen/spinlock.c | 20 -------------------- 1 file changed, 20 deletions(-) diff --git a/arch/x86/xen/spinlock.c b/arch/x86/xen/spinlock.c index e1bff87766be..b3c1ee8f0993 100644 --- a/arch/x86/xen/spinlock.c +++ b/arch/x86/xen/spinlock.c @@ -230,13 +230,6 @@ void xen_init_lock_cpu(int cpu) WARN(per_cpu(lock_kicker_irq, cpu) >= 0, "spinlock on CPU%d exists on IRQ%d!\n", cpu, per_cpu(lock_kicker_irq, cpu)); - /* - * See git commit f10cd522c5fbfec9ae3cc01967868c9c2401ed23 - * (xen: disable PV spinlocks on HVM) - */ - if (xen_hvm_domain()) - return; - name = kasprintf(GFP_KERNEL, "spinlock%d", cpu); irq = bind_ipi_to_irqhandler(XEN_SPIN_UNLOCK_VECTOR, cpu, @@ -256,13 +249,6 @@ void xen_init_lock_cpu(int cpu) void xen_uninit_lock_cpu(int cpu) { - /* - * See git commit f10cd522c5fbfec9ae3cc01967868c9c2401ed23 - * (xen: disable PV spinlocks on HVM) - */ - if (xen_hvm_domain()) - return; - if (!xen_pvspin) return; @@ -275,12 +261,6 @@ void xen_uninit_lock_cpu(int cpu) void __init xen_init_spinlocks(void) { - /* - * See git commit f10cd522c5fbfec9ae3cc01967868c9c2401ed23 - * (xen: disable PV spinlocks on HVM) - */ - if (xen_hvm_domain()) - return; if (!xen_pvspin) { printk(KERN_DEBUG "xen: PV spinlocks disabled\n"); -- GitLab