[PATCH v5 4/5] intel_iommu: allow Extended Interrupt Mode when using userspace APIC

[Bui Quang Minh <minhquangbui99@gmail.com>]

As userspace APIC now supports x2APIC, intel interrupt remapping
hardware can be set to EIM mode when userspace local APIC is used.

Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Bui Quang Minh <minhquangbui99@gmail.com>
---
 hw/i386/intel_iommu.c | 11 -----------
 1 file changed, 11 deletions(-)

diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c
index dcc334060c..5e576f6059 100644
--- a/hw/i386/intel_iommu.c
+++ b/hw/i386/intel_iommu.c
@@ -4043,17 +4043,6 @@ static bool vtd_decide_config(IntelIOMMUState *s, Error **errp)
                       && x86_iommu_ir_supported(x86_iommu) ?
                                               ON_OFF_AUTO_ON : ON_OFF_AUTO_OFF;
     }
-    if (s->intr_eim == ON_OFF_AUTO_ON && !s->buggy_eim) {
-        if (!kvm_irqchip_is_split()) {
-            error_setg(errp, "eim=on requires accel=kvm,kernel-irqchip=split");
-            return false;
-        }
-        if (!kvm_enable_x2apic()) {
-            error_setg(errp, "eim=on requires support on the KVM side"
-                             "(X2APIC_API, first shipped in v4.7)");
-            return false;
-        }
-    }
 
     /* Currently only address widths supported are 39 and 48 bits */
     if ((s->aw_bits != VTD_HOST_AW_39BIT) &&
-- 
2.25.1