diff mbox series

[v3,7/7] usb/libhw: switch to guarded DMA accesses

Message ID 20221028191648.964076-8-alxndr@bu.edu (mailing list archive)
State New, archived
Headers show
Series memory: prevent dma-reentracy issues | expand

Commit Message

Alexander Bulekov Oct. 28, 2022, 7:16 p.m. UTC 
Fixes: https://gitlab.com/qemu-project/qemu/-/issues/541
Signed-off-by: Alexander Bulekov <alxndr@bu.edu>
---
 hw/usb/libhw.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)
diff mbox series

Patch

diff --git a/hw/usb/libhw.c b/hw/usb/libhw.c
index f350eae443..a15e97f76d 100644
--- a/hw/usb/libhw.c
+++ b/hw/usb/libhw.c
@@ -36,7 +36,7 @@  int usb_packet_map(USBPacket *p, QEMUSGList *sgl)
 
         while (len) {
             dma_addr_t xlen = len;
-            mem = dma_memory_map(sgl->as, base, &xlen, dir,
+            mem = dma_memory_map_guarded(sgl->dev, sgl->as, base, &xlen, dir,
                                  MEMTXATTRS_UNSPECIFIED);
             if (!mem) {
                 goto err;
@@ -63,7 +63,7 @@  void usb_packet_unmap(USBPacket *p, QEMUSGList *sgl)
     int i;
 
     for (i = 0; i < p->iov.niov; i++) {
-        dma_memory_unmap(sgl->as, p->iov.iov[i].iov_base,
+        dma_memory_unmap_guarded(sgl->dev, sgl->as, p->iov.iov[i].iov_base,
                          p->iov.iov[i].iov_len, dir,
                          p->iov.iov[i].iov_len);
     }