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| author | Yang Zhang <yang.zhang@intel.com> | 2009-03-23 03:31:04 -0400 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2009-06-10 11:48:34 +0300 |
| commit | 362c1055e58ecd25a9393c520ab263c80b147497 (patch) | |
| tree | 76fe99925f7ce1e9bf14733658ea51b4dd025703 /arch/ia64/kvm/process.c | |
| parent | a8b876b1a469cb364fee16ba3aef01613a1231cc (diff) | |
| download | op-kernel-dev-362c1055e58ecd25a9393c520ab263c80b147497.zip op-kernel-dev-362c1055e58ecd25a9393c520ab263c80b147497.tar.gz | |
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 <yang.zhang@intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/ia64/kvm/process.c')
| -rw-r--r-- | arch/ia64/kvm/process.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/ia64/kvm/process.c b/arch/ia64/kvm/process.c index b1dc809..a8f84da 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; } } |
