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+virtio only support packed ring size power of 2
+
+Issue discription：
+When QEMU starts with "-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=false,mrg_rxbuf=on,rx_queue_size=1025,tx_queue_size=1025,mq=on,vectors=15,packed=on"
+
+It raises error: Invalid rx_queue_size (= 1025), must be a power of 2 between 256 and 1024
+
+Analysis:
+According to virtio1.1 spec, the packed queue size value does not have to be a power of 2.
+
+Maybe the virtio need to be revised?
+
+On Wed, May 6, 2020 at 10:51 AM xuan <email address hidden> wrote:
+
+> Public bug reported:
+>
+> Issue discription：
+> When QEMU starts with "-device
+> virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=false,mrg_rxbuf=on,rx_queue_size=1025,tx_queue_size=1025,mq=on,vectors=15,packed=on"
+>
+> It raises error: Invalid rx_queue_size (= 1025), must be a power of 2
+> between 256 and 1024
+>
+> Analysis:
+> According to virtio1.1 spec, the packed queue size value does not have to
+> be a power of 2.
+>
+> ** Affects: qemu
+>      Importance: Undecided
+>          Status: New
+>
+> --
+> You received this bug notification because you are a member of qemu-
+> devel-ml, which is subscribed to QEMU.
+> https://bugs.launchpad.net/bugs/1877015
+>
+> Title:
+>   virtio only support packed ring size power of 2 between 256 and 1024
+>
+> Status in QEMU:
+>   New
+>
+> Bug description:
+>   Issue discription：
+>   When QEMU starts with "-device
+> virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=false,mrg_rxbuf=on,rx_queue_size=1025,tx_queue_size=1025,mq=on,vectors=15,packed=on"
+>
+>   It raises error: Invalid rx_queue_size (= 1025), must be a power of 2
+>   between 256 and 1024
+>
+>   Analysis:
+>   According to virtio1.1 spec, the packed queue size value does not have
+> to be a power of 2.
+>
+> To manage notifications about this bug go to:
+> https://bugs.launchpad.net/qemu/+bug/1877015/+subscriptions
+>
+>
+
+-- 
+         此致
+礼
+罗勇刚
+Yours
+    sincerely,
+Yonggang Luo
+
+
+Thank you for your reply. I think the code should add the handling for packed ring size to follow the spec.
+
+Thank you for your reply.  I think the code should add the handling for packed ring size to follow the spec.

+

+-----Original Message-----

+From: <email address hidden> <email address hidden> On Behalf Of Yonggang Luo

+Sent: Wednesday, May 6, 2020 12:32 PM

+To: Ding, Xuan <email address hidden>

+Subject: Re: [Bug 1877015] [NEW] virtio only support packed ring size power of 2 between 256 and 1024

+

+Maybe the virtio need to be revised?

+

+On Wed, May 6, 2020 at 10:51 AM xuan <email address hidden> wrote:

+

+> Public bug reported:

+>

+> Issue discription：

+> When QEMU starts with "-device

+> virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=false,mrg_rxbuf=on,rx_queue_size=1025,tx_queue_size=1025,mq=on,vectors=15,packed=on"

+>

+> It raises error: Invalid rx_queue_size (= 1025), must be a power of 2 

+> between 256 and 1024

+>

+> Analysis:

+> According to virtio1.1 spec, the packed queue size value does not have 

+> to be a power of 2.

+>

+> ** Affects: qemu

+>      Importance: Undecided

+>          Status: New

+>

+> --

+> You received this bug notification because you are a member of qemu- 

+> devel-ml, which is subscribed to QEMU.

+> https://bugs.launchpad.net/bugs/1877015

+>

+> Title:

+>   virtio only support packed ring size power of 2 between 256 and 1024

+>

+> Status in QEMU:

+>   New

+>

+> Bug description:

+>   Issue discription：

+>   When QEMU starts with "-device

+> virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=false,mrg_rxbuf=on,rx_queue_size=1025,tx_queue_size=1025,mq=on,vectors=15,packed=on"

+>

+>   It raises error: Invalid rx_queue_size (= 1025), must be a power of 2

+>   between 256 and 1024

+>

+>   Analysis:

+>   According to virtio1.1 spec, the packed queue size value does not 

+> have to be a power of 2.

+>

+> To manage notifications about this bug go to:

+> https://bugs.launchpad.net/qemu/+bug/1877015/+subscriptions

+>

+>

+

+-- 

+         此致

+礼

+罗勇刚

+Yours

+    sincerely,

+Yonggang Luo

+

+--

+You received this bug notification because you are subscribed to the bug report.

+https://bugs.launchpad.net/bugs/1877015

+

+Title:

+  virtio only support packed ring size power of 2

+

+Status in QEMU:

+  New

+

+Bug description:

+  Issue discription：

+  When QEMU starts with "-device virtio-net-pci,netdev=netdev0,mac=52:54:00:00:00:01,disable-modern=false,mrg_rxbuf=on,rx_queue_size=1025,tx_queue_size=1025,mq=on,vectors=15,packed=on"

+

+  It raises error: Invalid rx_queue_size (= 1025), must be a power of 2

+  between 256 and 1024

+

+  Analysis:

+  According to virtio1.1 spec, the packed queue size value does not have to be a power of 2.

+

+To manage notifications about this bug go to:

+https://bugs.launchpad.net/qemu/+bug/1877015/+subscriptions

+
+
+The QEMU project is currently moving its bug tracking to another system.
+For this we need to know which bugs are still valid and which could be
+closed already. Thus we are setting older bugs to "Incomplete" now.
+
+If you still think this bug report here is valid, then please switch
+the state back to "New" within the next 60 days, otherwise this report
+will be marked as "Expired". Or please mark it as "Fix Released" if
+the problem has been solved with a newer version of QEMU already.
+
+Thank you and sorry for the inconvenience.
+
+
+
+This is an automated cleanup. This bug report has been moved to QEMU's
+new bug tracker on gitlab.com and thus gets marked as 'expired' now.
+Please continue with the discussion here:
+
+ https://gitlab.com/qemu-project/qemu/-/issues/270
+
+