[Qemu-devel] [PATCH 42/52] dma: do not depend on kvm_enabled()

[Paolo Bonzini <pbonzini@redhat.com>]

Memory barriers are needed also by Xen and, when the ioeventfd
bugs are fixed, by TCG as well.

sysemu/kvm.h is not anymore needed in sysemu/dma.h, move it to
the actual users.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
---
 hw/intc/arm_gicv2m.c  | 1 +
 hw/intc/xics_kvm.c    | 2 +-
 hw/misc/pci-testdev.c | 1 +
 hw/ppc/e500plat.c     | 1 +
 hw/ppc/spapr_hcall.c  | 1 +
 hw/ppc/spapr_pci.c    | 1 +
 hw/ppc/spapr_rtas.c   | 1 +
 include/sysemu/dma.h  | 5 +----
 8 files changed, 8 insertions(+), 5 deletions(-)

diff --git a/hw/intc/arm_gicv2m.c b/hw/intc/arm_gicv2m.c
index e8b5177..589d315 100644
--- a/hw/intc/arm_gicv2m.c
+++ b/hw/intc/arm_gicv2m.c
@@ -29,6 +29,7 @@
 #include "qapi/error.h"
 #include "hw/sysbus.h"
 #include "hw/pci/msi.h"
+#include "sysemu/kvm.h"
 
 #define TYPE_ARM_GICV2M "arm-gicv2m"
 #define ARM_GICV2M(obj) OBJECT_CHECK(ARMGICv2mState, (obj), TYPE_ARM_GICV2M)
diff --git a/hw/intc/xics_kvm.c b/hw/intc/xics_kvm.c
index b40292d..55fd801 100644
--- a/hw/intc/xics_kvm.c
+++ b/hw/intc/xics_kvm.c
@@ -31,7 +31,7 @@
 #include "cpu.h"
 #include "hw/hw.h"
 #include "trace.h"
-#include "linux/kvm.h"
+#include "sysemu/kvm.h"
 #include "hw/ppc/spapr.h"
 #include "hw/ppc/xics.h"
 #include "kvm_ppc.h"
diff --git a/hw/misc/pci-testdev.c b/hw/misc/pci-testdev.c
index 2f2e989..7d59902 100644
--- a/hw/misc/pci-testdev.c
+++ b/hw/misc/pci-testdev.c
@@ -21,6 +21,7 @@
 #include "hw/hw.h"
 #include "hw/pci/pci.h"
 #include "qemu/event_notifier.h"
+#include "sysemu/kvm.h"
 
 typedef struct PCITestDevHdr {
     uint8_t test;
diff --git a/hw/ppc/e500plat.c b/hw/ppc/e500plat.c
index b00565c..94b4545 100644
--- a/hw/ppc/e500plat.c
+++ b/hw/ppc/e500plat.c
@@ -14,6 +14,7 @@
 #include "e500.h"
 #include "hw/boards.h"
 #include "sysemu/device_tree.h"
+#include "sysemu/kvm.h"
 #include "hw/pci/pci.h"
 #include "hw/ppc/openpic.h"
 #include "kvm_ppc.h"
diff --git a/hw/ppc/spapr_hcall.c b/hw/ppc/spapr_hcall.c
index 8f40602..4426a50 100644
--- a/hw/ppc/spapr_hcall.c
+++ b/hw/ppc/spapr_hcall.c
@@ -7,6 +7,7 @@
 #include "mmu-hash64.h"
 #include "cpu-models.h"
 #include "trace.h"
+#include "sysemu/kvm.h"
 #include "kvm_ppc.h"
 
 struct SPRSyncState {
diff --git a/hw/ppc/spapr_pci.c b/hw/ppc/spapr_pci.c
index 573e635..e55b505 100644
--- a/hw/ppc/spapr_pci.c
+++ b/hw/ppc/spapr_pci.c
@@ -44,6 +44,7 @@
 #include "hw/pci/pci_bus.h"
 #include "hw/ppc/spapr_drc.h"
 #include "sysemu/device_tree.h"
+#include "sysemu/kvm.h"
 
 #include "hw/vfio/vfio.h"
 
diff --git a/hw/ppc/spapr_rtas.c b/hw/ppc/spapr_rtas.c
index f073258..580829e 100644
--- a/hw/ppc/spapr_rtas.c
+++ b/hw/ppc/spapr_rtas.c
@@ -31,6 +31,7 @@
 #include "hw/qdev.h"
 #include "sysemu/device_tree.h"
 #include "sysemu/cpus.h"
+#include "sysemu/kvm.h"
 
 #include "hw/ppc/spapr.h"
 #include "hw/ppc/spapr_vio.h"
diff --git a/include/sysemu/dma.h b/include/sysemu/dma.h
index 0f7cd4d..d6e96a4 100644
--- a/include/sysemu/dma.h
+++ b/include/sysemu/dma.h
@@ -15,7 +15,6 @@
 #include "hw/hw.h"
 #include "block/block.h"
 #include "block/accounting.h"
-#include "sysemu/kvm.h"
 
 typedef struct ScatterGatherEntry ScatterGatherEntry;
 
@@ -67,9 +66,7 @@ static inline void dma_barrier(AddressSpace *as, DMADirection dir)
      * use lighter barriers based on the direction of the
      * transfer, the DMA context, etc...
      */
-    if (kvm_enabled()) {
-        smp_mb();
-    }
+    smp_mb();
 }
 
 /* Checks that the given range of addresses is valid for DMA.  This is
-- 
1.8.3.1