From 362c1055e58ecd25a9393c520ab263c80b147497 Mon Sep 17 00:00:00 2001 From: Yang Zhang Date: Mon, 23 Mar 2009 03:31:04 -0400 Subject: KVM: ia64: enable external interrupt in vmm Currently, the interrupt enable bit is cleared when in the vmm. This patch sets the bit and the external interrupts can be dealt with when in the vmm. This improves the I/O performance. Signed-off-by: Yang Zhang Signed-off-by: Avi Kivity --- arch/ia64/kvm/process.c | 5 +++++ 1 file changed, 5 insertions(+) (limited to 'arch/ia64/kvm/process.c') diff --git a/arch/ia64/kvm/process.c b/arch/ia64/kvm/process.c index b1dc80952d9..a8f84da04b4 100644 --- a/arch/ia64/kvm/process.c +++ b/arch/ia64/kvm/process.c @@ -652,20 +652,25 @@ void kvm_ia64_handle_break(unsigned long ifa, struct kvm_pt_regs *regs, unsigned long isr, unsigned long iim) { struct kvm_vcpu *v = current_vcpu; + long psr; if (ia64_psr(regs)->cpl == 0) { /* Allow hypercalls only when cpl = 0. */ if (iim == DOMN_PAL_REQUEST) { + local_irq_save(psr); set_pal_call_data(v); vmm_transition(v); get_pal_call_result(v); vcpu_increment_iip(v); + local_irq_restore(psr); return; } else if (iim == DOMN_SAL_REQUEST) { + local_irq_save(psr); set_sal_call_data(v); vmm_transition(v); get_sal_call_result(v); vcpu_increment_iip(v); + local_irq_restore(psr); return; } } -- cgit v1.2.3-18-g5258