[PATCH v6 02/10] tests/qtest: Fix virtio msix message endianness

[Jishnu Warrier <jishnuvw@linux.ibm.com>]

From: Nicholas Piggin <npiggin@gmail.com>

msix messages are written to memory in little-endian order, so they
should not be byteswapped depending on target endianness, but read
as le and converted to host endian by the qtest.

Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Fabiano Rosas <farosas@suse.de>
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
---
 tests/qtest/libqos/virtio-pci-modern.c | 4 +++-
 tests/qtest/libqos/virtio-pci.c        | 6 ++++--
 2 files changed, 7 insertions(+), 3 deletions(-)

diff --git a/tests/qtest/libqos/virtio-pci-modern.c b/tests/qtest/libqos/virtio-pci-modern.c
index f31b3be6..5dae41e6 100644
--- a/tests/qtest/libqos/virtio-pci-modern.c
+++ b/tests/qtest/libqos/virtio-pci-modern.c
@@ -8,6 +8,7 @@
  */
 
 #include "qemu/osdep.h"
+#include "qemu/bswap.h"
 #include "standard-headers/linux/pci_regs.h"
 #include "standard-headers/linux/virtio_pci.h"
 #include "standard-headers/linux/virtio_config.h"
@@ -136,7 +137,8 @@ static bool get_msix_status(QVirtioPCIDevice *dev, uint32_t msix_entry,
         return qpci_msix_pending(dev->pdev, msix_entry);
     }
 
-    data = qtest_readl(dev->pdev->bus->qts, msix_addr);
+    qtest_memread(dev->pdev->bus->qts, msix_addr, &data, 4);
+    data = le32_to_cpu(data);
     if (data == 0) {
         return false;
     }
diff --git a/tests/qtest/libqos/virtio-pci.c b/tests/qtest/libqos/virtio-pci.c
index 102e45b5..76ea1f45 100644
--- a/tests/qtest/libqos/virtio-pci.c
+++ b/tests/qtest/libqos/virtio-pci.c
@@ -131,7 +131,8 @@ static bool qvirtio_pci_get_queue_isr_status(QVirtioDevice *d, QVirtQueue *vq)
             /* No ISR checking should be done if masked, but read anyway */
             return qpci_msix_pending(dev->pdev, vqpci->msix_entry);
         } else {
-            data = qtest_readl(dev->pdev->bus->qts, vqpci->msix_addr);
+            qtest_memread(dev->pdev->bus->qts, vqpci->msix_addr, &data, 4);
+            data = le32_to_cpu(data);
             if (data == 0) {
                 return false;
             }
@@ -156,7 +157,8 @@ static bool qvirtio_pci_get_config_isr_status(QVirtioDevice *d)
             /* No ISR checking should be done if masked, but read anyway */
             return qpci_msix_pending(dev->pdev, dev->config_msix_entry);
         } else {
-            data = qtest_readl(dev->pdev->bus->qts, dev->config_msix_addr);
+            qtest_memread(dev->pdev->bus->qts, dev->config_msix_addr, &data, 4);
+            data = le32_to_cpu(data);
             if (data == 0) {
                 return false;
             }
-- 
2.55.0