From: Philippe Mathieu-Daudé <philmd@linaro.org>
Date: Mon, 29 Sep 2025 14:06:27 +0000 (+0200)
Subject: hw/virtio/virtio: Replace legacy cpu_physical_memory_map() call
X-Git-Tag: v10.2.0-rc1~73^2~18
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=f9f713f1b4a272826f4acc4d57483e9dd1faa3f7;p=thirdparty%2Fqemu.git

hw/virtio/virtio: Replace legacy cpu_physical_memory_map() call

Propagate VirtIODevice::dma_as to virtqueue_undo_map_desc()
in order to replace the legacy cpu_physical_memory_unmap()
call by address_space_unmap().

Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20251002084203.63899-18-philmd@linaro.org>
---

diff --git a/hw/virtio/virtio.c b/hw/virtio/virtio.c
index be73753b59..153ee0a0cf 100644
--- a/hw/virtio/virtio.c
+++ b/hw/virtio/virtio.c
@@ -32,6 +32,7 @@
 #include "hw/virtio/virtio-access.h"
 #include "system/dma.h"
 #include "system/iothread.h"
+#include "system/memory.h"
 #include "system/runstate.h"
 #include "virtio-qmp.h"
 
@@ -1632,7 +1633,8 @@ out:
  * virtqueue_unmap_sg() can't be used).  Assumes buffers weren't written to
  * yet.
  */
-static void virtqueue_undo_map_desc(unsigned int out_num, unsigned int in_num,
+static void virtqueue_undo_map_desc(AddressSpace *as,
+                                    unsigned int out_num, unsigned int in_num,
                                     struct iovec *iov)
 {
     unsigned int i;
@@ -1640,7 +1642,7 @@ static void virtqueue_undo_map_desc(unsigned int out_num, unsigned int in_num,
     for (i = 0; i < out_num + in_num; i++) {
         int is_write = i >= out_num;
 
-        cpu_physical_memory_unmap(iov->iov_base, iov->iov_len, is_write, 0);
+        address_space_unmap(as, iov->iov_base, iov->iov_len, is_write, 0);
         iov++;
     }
 }
@@ -1842,7 +1844,7 @@ done:
     return elem;
 
 err_undo_map:
-    virtqueue_undo_map_desc(out_num, in_num, iov);
+    virtqueue_undo_map_desc(vdev->dma_as, out_num, in_num, iov);
     goto done;
 }
 
@@ -1992,7 +1994,7 @@ done:
     return elem;
 
 err_undo_map:
-    virtqueue_undo_map_desc(out_num, in_num, iov);
+    virtqueue_undo_map_desc(vdev->dma_as, out_num, in_num, iov);
     goto done;
 }