Merge remote-tracking branch 'qemu-kvm/uq/master' into staging

* qemu-kvm/uq/master:
  kvm: Add documentation comment for kvm_irqchip_in_kernel()
  kvm: Decouple 'GSI routing' from 'kernel irqchip'
  kvm: Decouple 'MSI routing via irqfds' from 'kernel irqchip'
  kvm: Decouple 'irqfds usable' from 'kernel irqchip'
  kvm: Move kvm_allows_irq0_override() to target-i386, fix return type
  kvm: Rename kvm_irqchip_set_irq() to kvm_set_irq()
  kvm: Decouple 'async interrupt delivery' from 'kernel irqchip'
  configure: Don't implicitly hardcode list of KVM architectures
  kvm: Check if smp_cpus exceeds max cpus supported by kvm

4 files changed, 48 insertions, 0 deletions

diff --git a/target-i386/Makefile.objs b/target-i386/Makefile.objs
index 683fd59af9..0715f58a8e 100644
--- a/target-i386/Makefile.objs
+++ b/target-i386/Makefile.objs
@@ -3,6 +3,7 @@ obj-y += excp_helper.o fpu_helper.o cc_helper.o int_helper.o svm_helper.o
 obj-y += smm_helper.o misc_helper.o mem_helper.o seg_helper.o
 obj-$(CONFIG_SOFTMMU) += machine.o arch_memory_mapping.o arch_dump.o
 obj-$(CONFIG_KVM) += kvm.o hyperv.o
+obj-$(CONFIG_NO_KVM) += kvm-stub.o
 obj-$(CONFIG_LINUX_USER) += ioport-user.o
 obj-$(CONFIG_BSD_USER) += ioport-user.o
 
diff --git a/target-i386/kvm-stub.c b/target-i386/kvm-stub.c
new file mode 100644
index 0000000000..11429c461e
--- /dev/null
+++ b/target-i386/kvm-stub.c
@@ -0,0 +1,18 @@
+/*
+ * QEMU KVM x86 specific function stubs
+ *
+ * Copyright Linaro Limited 2012
+ *
+ * Author: Peter Maydell <peter.maydell@linaro.org>
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ */
+#include "qemu-common.h"
+#include "kvm_i386.h"
+
+bool kvm_allows_irq0_override(void)
+{
+    return 1;
+}
diff --git a/target-i386/kvm.c b/target-i386/kvm.c
index 4cfb3faf01..696b14a04a 100644
--- a/target-i386/kvm.c
+++ b/target-i386/kvm.c
@@ -23,6 +23,7 @@
 #include "qemu-common.h"
 #include "sysemu.h"
 #include "kvm.h"
+#include "kvm_i386.h"
 #include "cpu.h"
 #include "gdbstub.h"
 #include "host-utils.h"
@@ -65,6 +66,11 @@ static bool has_msr_async_pf_en;
 static bool has_msr_misc_enable;
 static int lm_capable_kernel;
 
+bool kvm_allows_irq0_override(void)
+{
+    return !kvm_irqchip_in_kernel() || kvm_has_gsi_routing();
+}
+
 static struct kvm_cpuid2 *try_get_cpuid(KVMState *s, int max)
 {
     struct kvm_cpuid2 *cpuid;
@@ -2041,4 +2047,11 @@ void kvm_arch_init_irq_routing(KVMState *s)
          */
         no_hpet = 1;
     }
+    /* We know at this point that we're using the in-kernel
+     * irqchip, so we can use irqfds, and on x86 we know
+     * we can use msi via irqfd and GSI routing.
+     */
+    kvm_irqfds_allowed = true;
+    kvm_msi_via_irqfd_allowed = true;
+    kvm_gsi_routing_allowed = true;
 }
diff --git a/target-i386/kvm_i386.h b/target-i386/kvm_i386.h
new file mode 100644
index 0000000000..b82bbf401e
--- /dev/null
+++ b/target-i386/kvm_i386.h
@@ -0,0 +1,16 @@
+/*
+ * QEMU KVM support -- x86 specific functions.
+ *
+ * Copyright (c) 2012 Linaro Limited
+ *
+ * This work is licensed under the terms of the GNU GPL, version 2 or later.
+ * See the COPYING file in the top-level directory.
+ *
+ */
+
+#ifndef QEMU_KVM_I386_H
+#define QEMU_KVM_I386_H
+
+bool kvm_allows_irq0_override(void);
+
+#endif