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Tsirkin" To: qemu-devel@nongnu.org Subject: [PULL 09/25] tests/virtio-blk-test: read config space after feature negotiation Message-ID: <20191026193824.11926-10-mst@redhat.com> References: <20191026193824.11926-1-mst@redhat.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20191026193824.11926-1-mst@redhat.com> X-Mailer: git-send-email 2.22.0.678.g13338e74b8 X-Mutt-Fcc: =sent X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 209.132.183.28 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Laurent Vivier , Peter Maydell , Thomas Huth , qemu-block@nongnu.org, Stefan Hajnoczi , Paolo Bonzini Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Stefan Hajnoczi The VIRTIO Configuration Space cannot be accessed before device feature bits have been read because a driver doesn't know the endianness until it has checked VIRTIO_F_VERSION_1. Fix this problem in preparation for VIRTIO 1.0 support. Signed-off-by: Stefan Hajnoczi Reviewed-by: Thomas Huth Message-Id: <20191023100425.12168-2-stefanha@redhat.com> Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin --- tests/virtio-blk-test.c | 33 ++++++++++++++++++++------------- 1 file changed, 20 insertions(+), 13 deletions(-) diff --git a/tests/virtio-blk-test.c b/tests/virtio-blk-test.c index ed13167392..f6674fb233 100644 --- a/tests/virtio-blk-test.c +++ b/tests/virtio-blk-test.c @@ -125,10 +125,6 @@ static void test_basic(QVirtioDevice *dev, QGuestAlloc= ator *alloc, char *data; QTestState *qts =3D global_qtest; =20 - capacity =3D qvirtio_config_readq(dev, 0); - - g_assert_cmpint(capacity, =3D=3D, TEST_IMAGE_SIZE / 512); - features =3D qvirtio_get_features(dev); features =3D features & ~(QVIRTIO_F_BAD_FEATURE | (1u << VIRTIO_RING_F_INDIRECT_DESC) | @@ -136,6 +132,9 @@ static void test_basic(QVirtioDevice *dev, QGuestAlloca= tor *alloc, (1u << VIRTIO_BLK_F_SCSI)); qvirtio_set_features(dev, features); =20 + capacity =3D qvirtio_config_readq(dev, 0); + g_assert_cmpint(capacity, =3D=3D, TEST_IMAGE_SIZE / 512); + qvirtio_set_driver_ok(dev); =20 /* Write and read with 3 descriptor layout */ @@ -359,9 +358,6 @@ static void indirect(void *obj, void *u_data, QGuestAll= ocator *t_alloc) char *data; QTestState *qts =3D global_qtest; =20 - capacity =3D qvirtio_config_readq(dev, 0); - g_assert_cmpint(capacity, =3D=3D, TEST_IMAGE_SIZE / 512); - features =3D qvirtio_get_features(dev); g_assert_cmphex(features & (1u << VIRTIO_RING_F_INDIRECT_DESC), !=3D, = 0); features =3D features & ~(QVIRTIO_F_BAD_FEATURE | @@ -369,6 +365,9 @@ static void indirect(void *obj, void *u_data, QGuestAll= ocator *t_alloc) (1u << VIRTIO_BLK_F_SCSI)); qvirtio_set_features(dev, features); =20 + capacity =3D qvirtio_config_readq(dev, 0); + g_assert_cmpint(capacity, =3D=3D, TEST_IMAGE_SIZE / 512); + vq =3D qvirtqueue_setup(dev, t_alloc, 0); qvirtio_set_driver_ok(dev); =20 @@ -434,8 +433,16 @@ static void config(void *obj, void *data, QGuestAlloca= tor *t_alloc) QVirtioBlk *blk_if =3D obj; QVirtioDevice *dev =3D blk_if->vdev; int n_size =3D TEST_IMAGE_SIZE / 2; + uint64_t features; uint64_t capacity; =20 + features =3D qvirtio_get_features(dev); + features =3D features & ~(QVIRTIO_F_BAD_FEATURE | + (1u << VIRTIO_RING_F_INDIRECT_DESC) | + (1u << VIRTIO_RING_F_EVENT_IDX) | + (1u << VIRTIO_BLK_F_SCSI)); + qvirtio_set_features(dev, features); + capacity =3D qvirtio_config_readq(dev, 0); g_assert_cmpint(capacity, =3D=3D, TEST_IMAGE_SIZE / 512); =20 @@ -475,9 +482,6 @@ static void msix(void *obj, void *u_data, QGuestAllocat= or *t_alloc) qpci_msix_enable(pdev->pdev); qvirtio_pci_set_msix_configuration_vector(pdev, t_alloc, 0); =20 - capacity =3D qvirtio_config_readq(dev, 0); - g_assert_cmpint(capacity, =3D=3D, TEST_IMAGE_SIZE / 512); - features =3D qvirtio_get_features(dev); features =3D features & ~(QVIRTIO_F_BAD_FEATURE | (1u << VIRTIO_RING_F_INDIRECT_DESC) | @@ -485,6 +489,9 @@ static void msix(void *obj, void *u_data, QGuestAllocat= or *t_alloc) (1u << VIRTIO_BLK_F_SCSI)); qvirtio_set_features(dev, features); =20 + capacity =3D qvirtio_config_readq(dev, 0); + g_assert_cmpint(capacity, =3D=3D, TEST_IMAGE_SIZE / 512); + vq =3D qvirtqueue_setup(dev, t_alloc, 0); qvirtqueue_pci_msix_setup(pdev, (QVirtQueuePCI *)vq, t_alloc, 1); =20 @@ -584,9 +591,6 @@ static void idx(void *obj, void *u_data, QGuestAllocato= r *t_alloc) qpci_msix_enable(pdev->pdev); qvirtio_pci_set_msix_configuration_vector(pdev, t_alloc, 0); =20 - capacity =3D qvirtio_config_readq(dev, 0); - g_assert_cmpint(capacity, =3D=3D, TEST_IMAGE_SIZE / 512); - features =3D qvirtio_get_features(dev); features =3D features & ~(QVIRTIO_F_BAD_FEATURE | (1u << VIRTIO_RING_F_INDIRECT_DESC) | @@ -594,6 +598,9 @@ static void idx(void *obj, void *u_data, QGuestAllocato= r *t_alloc) (1u << VIRTIO_BLK_F_SCSI)); qvirtio_set_features(dev, features); =20 + capacity =3D qvirtio_config_readq(dev, 0); + g_assert_cmpint(capacity, =3D=3D, TEST_IMAGE_SIZE / 512); + vq =3D qvirtqueue_setup(dev, t_alloc, 0); qvirtqueue_pci_msix_setup(pdev, (QVirtQueuePCI *)vq, t_alloc, 1); =20 --=20 MST