patch 'net/virtio: remove address width limit for modern devices' has been queued to stable release 22.11.2

[Xueming Li]

Hi,

FYI, your patch has been queued to stable release 22.11.2

Note it hasn't been pushed to http://dpdk.org/browse/dpdk-stable yet.
It will be pushed if I get no objections before 04/11/23. So please
shout if anyone has objections.

Also note that after the patch there's a diff of the upstream commit vs the
patch applied to the branch. This will indicate if there was any rebasing
needed to apply to the stable branch. If there were code changes for rebasing
(ie: not only metadata diffs), please double check that the rebase was
correctly done.

Queued patches are on a temporary branch at:
https://git.dpdk.org/dpdk-stable/log/?h=22.11-staging

This queued commit can be viewed at:
https://git.dpdk.org/dpdk-stable/log/?h=22.11-staging/commit/d59d4fbffa9c3da60b4c2838ac386c9132c77170

Thanks.

Xueming Li <xuemingl at nvidia.com>

---
>From d59d4fbffa9c3da60b4c2838ac386c9132c77170 Mon Sep 17 00:00:00 2001
From: David Marchand <david.marchand at redhat.com>
Date: Tue, 14 Mar 2023 09:53:34 +0100
Subject: [PATCH] net/virtio: remove address width limit for modern devices
Cc: Xueming Li <xuemingl at nvidia.com>

[ upstream commit 8b76b3a0d327f6bedc1343149e03619337ab0408 ]

Modern devices don't have the same limitation as legacy devices, because
vring addresses are not configured using a 32-bit register.

Fixes: 6ba1f63b5ab0 ("virtio: support specification 1.0")

Signed-off-by: David Marchand <david.marchand at redhat.com>
Reviewed-by: Maxime Coquelin <maxime.coquelin at redhat.com>
Acked-by: Andy Pei <andy.pei at intel.com>
Reviewed-by: Chenbo Xia <chenbo.xia at intel.com>
---
 drivers/net/virtio/virtio_pci.c | 28 ++++++++--------------------
 1 file changed, 8 insertions(+), 20 deletions(-)

diff --git a/drivers/net/virtio/virtio_pci.c b/drivers/net/virtio/virtio_pci.c
index 9cf4d760b4..29eb739b04 100644
--- a/drivers/net/virtio/virtio_pci.c
+++ b/drivers/net/virtio/virtio_pci.c
@@ -33,22 +33,6 @@
 
 struct virtio_pci_internal virtio_pci_internal[RTE_MAX_ETHPORTS];
 
-static inline int
-check_vq_phys_addr_ok(struct virtqueue *vq)
-{
-	/* Virtio PCI device VIRTIO_PCI_QUEUE_PF register is 32bit,
-	 * and only accepts 32 bit page frame number.
-	 * Check if the allocated physical memory exceeds 16TB.
-	 */
-	if ((vq->vq_ring_mem + vq->vq_ring_size - 1) >>
-			(VIRTIO_PCI_QUEUE_ADDR_SHIFT + 32)) {
-		PMD_INIT_LOG(ERR, "vring address shouldn't be above 16TB!");
-		return 0;
-	}
-
-	return 1;
-}
-
 #define PCI_MSIX_ENABLE 0x8000
 
 static enum virtio_msix_status
@@ -273,8 +257,15 @@ legacy_setup_queue(struct virtio_hw *hw, struct virtqueue *vq)
 {
 	uint32_t src;
 
-	if (!check_vq_phys_addr_ok(vq))
+	/* Virtio PCI device VIRTIO_PCI_QUEUE_PFN register is 32bit,
+	 * and only accepts 32 bit page frame number.
+	 * Check if the allocated physical memory exceeds 16TB.
+	 */
+	if ((vq->vq_ring_mem + vq->vq_ring_size - 1) >>
+			(VIRTIO_PCI_QUEUE_ADDR_SHIFT + 32)) {
+		PMD_INIT_LOG(ERR, "vring address shouldn't be above 16TB!");
 		return -1;
+	}
 
 	rte_pci_ioport_write(VTPCI_IO(hw), &vq->vq_queue_index, 2,
 		VIRTIO_PCI_QUEUE_SEL);
@@ -476,9 +467,6 @@ modern_setup_queue(struct virtio_hw *hw, struct virtqueue *vq)
 	uint64_t desc_addr, avail_addr, used_addr;
 	uint16_t notify_off;
 
-	if (!check_vq_phys_addr_ok(vq))
-		return -1;
-
 	desc_addr = vq->vq_ring_mem;
 	avail_addr = desc_addr + vq->vq_nentries * sizeof(struct vring_desc);
 	used_addr = RTE_ALIGN_CEIL(avail_addr + offsetof(struct vring_avail,
-- 
2.25.1

---
  Diff of the applied patch vs upstream commit (please double-check if non-empty:
---
--- -	2023-04-09 21:45:41.642343800 +0800
+++ 0112-net-virtio-remove-address-width-limit-for-modern-dev.patch	2023-04-09 21:45:38.769042200 +0800
@@ -1 +1 @@
-From 8b76b3a0d327f6bedc1343149e03619337ab0408 Mon Sep 17 00:00:00 2001
+From d59d4fbffa9c3da60b4c2838ac386c9132c77170 Mon Sep 17 00:00:00 2001
@@ -4,0 +5,3 @@
+Cc: Xueming Li <xuemingl at nvidia.com>
+
+[ upstream commit 8b76b3a0d327f6bedc1343149e03619337ab0408 ]
@@ -10 +12,0 @@
-Cc: stable at dpdk.org