[Qemu-devel] [PATCH v5 1/9] x86_iommu: move the kernel-irqchip check in common code

["Singh, Brijesh" <brijesh.singh@amd.com>]

Interrupt remapping needs kernel-irqchip={off|split} on both Intel and AMD
platforms. Move the check in common place.

Signed-off-by: Brijesh Singh <brijesh.singh@amd.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Cc: Peter Xu <peterx@redhat.com>
Cc: "Michael S. Tsirkin" <mst@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Eduardo Habkost <ehabkost@redhat.com>
Cc: Marcel Apfelbaum <marcel.apfelbaum@gmail.com>
Cc: Tom Lendacky <Thomas.Lendacky@amd.com>
Cc: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
---
 hw/i386/intel_iommu.c | 7 -------
 hw/i386/x86-iommu.c   | 9 +++++++++
 2 files changed, 9 insertions(+), 7 deletions(-)

diff --git a/hw/i386/intel_iommu.c b/hw/i386/intel_iommu.c
index 3dfada1..84dbc20 100644
--- a/hw/i386/intel_iommu.c
+++ b/hw/i386/intel_iommu.c
@@ -3248,13 +3248,6 @@ static bool vtd_decide_config(IntelIOMMUState *s, Error **errp)
 {
     X86IOMMUState *x86_iommu = X86_IOMMU_DEVICE(s);
 
-    /* Currently Intel IOMMU IR only support "kernel-irqchip={off|split}" */
-    if (x86_iommu->intr_supported && kvm_irqchip_in_kernel() &&
-        !kvm_irqchip_is_split()) {
-        error_setg(errp, "Intel Interrupt Remapping cannot work with "
-                         "kernel-irqchip=on, please use 'split|off'.");
-        return false;
-    }
     if (s->intr_eim == ON_OFF_AUTO_ON && !x86_iommu->intr_supported) {
         error_setg(errp, "eim=on cannot be selected without intremap=on");
         return false;
diff --git a/hw/i386/x86-iommu.c b/hw/i386/x86-iommu.c
index 8a01a2d..7440cb8 100644
--- a/hw/i386/x86-iommu.c
+++ b/hw/i386/x86-iommu.c
@@ -25,6 +25,7 @@
 #include "qapi/error.h"
 #include "qemu/error-report.h"
 #include "trace.h"
+#include "sysemu/kvm.h"
 
 void x86_iommu_iec_register_notifier(X86IOMMUState *iommu,
                                      iec_notify_fn fn, void *data)
@@ -94,6 +95,14 @@ static void x86_iommu_realize(DeviceState *dev, Error **errp)
         return;
     }
 
+    /* Both Intel and AMD IOMMU IR only support "kernel-irqchip={off|split}" */
+    if (x86_iommu->intr_supported && kvm_irqchip_in_kernel() &&
+        !kvm_irqchip_is_split()) {
+        error_setg(errp, "Interrupt Remapping cannot work with "
+                         "kernel-irqchip=on, please use 'split|off'.");
+        return;
+    }
+
     if (x86_class->realize) {
         x86_class->realize(dev, errp);
     }
-- 
2.7.4