lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  PHC 
Open Source and information security mailing list archives
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Date:	Mon, 26 Oct 2015 13:36:09 +0800
From:	Lan Tianyu <>
To:	Alexander Duyck <>,,,,,,,,,,,,,,,,,,,,,
Subject: Re: [RFC Patch 00/12] IXGBE: Add live migration support for SRIOV

On 2015年10月24日 02:36, Alexander Duyck wrote:
> I was thinking about it and I am pretty sure the dummy write approach is
> problematic at best.  Specifically the issue is that while you are
> performing a dummy write you risk pulling in descriptors for data that
> hasn't been dummy written to yet.  So when you resume and restore your
> descriptors you will have once that may contain Rx descriptors
> indicating they contain data when after the migration they don't.

How about changing sequence? dummy writing Rx packet data fist and then
its desc. This can ensure that RX data is migrated before its desc and
prevent such case.

Best regards
Tianyu Lan
To unsubscribe from this list: send the line "unsubscribe netdev" in
the body of a message to
More majordomo info at

Powered by blists - more mailing lists