hw/virtio/vhost: Replace legacy cpu_physical_memory_*map() calls

Use VirtIODevice::dma_as address space to convert the legacy
cpu_physical_memory_[un]map() calls to address_space_[un]map().

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20251002084203.63899-17-philmd@linaro.org>

hw/virtio/vhost.c

@@ -27,6 +27,7 @@
 #include "migration/blocker.h"
 #include "migration/qemu-file-types.h"
 #include "system/dma.h"
+#include "system/memory.h"
 #include "trace.h"
 
 /* enabled until disconnected backend stabilizes */
@@ -455,7 +456,8 @@ static void *vhost_memory_map(struct vhost_dev *dev, hwaddr addr,
                               hwaddr *plen, bool is_write)
 {
     if (!vhost_dev_has_iommu(dev)) {
-        return cpu_physical_memory_map(addr, plen, is_write);
+        return address_space_map(dev->vdev->dma_as, addr, plen, is_write,
+                                 MEMTXATTRS_UNSPECIFIED);
     } else {
         return (void *)(uintptr_t)addr;
     }
@@ -466,7 +468,8 @@ static void vhost_memory_unmap(struct vhost_dev *dev, void *buffer,
                                hwaddr access_len)
 {
     if (!vhost_dev_has_iommu(dev)) {
-        cpu_physical_memory_unmap(buffer, len, is_write, access_len);
+        address_space_unmap(dev->vdev->dma_as, buffer, len, is_write,
+                            access_len);
     }
 }