netdev - RE: [EXTERNAL] Re: [PATCH net v1 2/2] octeon_ep_vf: avoid compiler and IQ/OQ reordering

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Message-ID:
 <MN6PR18MB5466A9FC65A7122D84985C9FD382A@MN6PR18MB5466.namprd18.prod.outlook.com>
Date: Fri, 9 Jan 2026 14:28:02 +0000
From: Vimlesh Kumar <vimleshk@...vell.com>
To: Paolo Abeni <pabeni@...hat.com>,
        "netdev@...r.kernel.org"
	<netdev@...r.kernel.org>,
        "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>
CC: Sathesh B Edara <sedara@...vell.com>,
        Shinas Rasheed
	<srasheed@...vell.com>,
        Haseeb Gani <hgani@...vell.com>,
        Veerasenareddy Burru
	<vburru@...vell.com>,
        Satananda Burla <sburla@...vell.com>,
        Andrew Lunn
	<andrew+netdev@...n.ch>,
        "David S. Miller" <davem@...emloft.net>,
        Eric
 Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>
Subject: RE: [EXTERNAL] Re: [PATCH net v1 2/2] octeon_ep_vf: avoid compiler
 and IQ/OQ reordering



> -----Original Message-----
> From: Paolo Abeni <pabeni@...hat.com>
> Sent: Monday, December 29, 2025 9:48 PM
> To: Vimlesh Kumar <vimleshk@...vell.com>; netdev@...r.kernel.org; linux-
> kernel@...r.kernel.org
> Cc: Sathesh B Edara <sedara@...vell.com>; Shinas Rasheed
> <srasheed@...vell.com>; Haseeb Gani <hgani@...vell.com>;
> Veerasenareddy Burru <vburru@...vell.com>; Satananda Burla
> <sburla@...vell.com>; Andrew Lunn <andrew+netdev@...n.ch>; David S.
> Miller <davem@...emloft.net>; Eric Dumazet <edumazet@...gle.com>;
> Jakub Kicinski <kuba@...nel.org>
> Subject: [EXTERNAL] Re: [PATCH net v1 2/2] octeon_ep_vf: avoid compiler and
> IQ/OQ reordering
> 
> On 12/19/25 8: 29 AM, Vimlesh Kumar wrote: > Utilize READ_ONCE and
> WRITE_ONCE APIs for IO queue Tx/Rx > variable access to prevent compiler
> optimization and reordering. > Additionally, ensure IO queue OUT/IN_CNT
> registers are flushed
> On 12/19/25 8:29 AM, Vimlesh Kumar wrote:
> > Utilize READ_ONCE and WRITE_ONCE APIs for IO queue Tx/Rx variable
> > access to prevent compiler optimization and reordering.
> > Additionally, ensure IO queue OUT/IN_CNT registers are flushed by
> > performing a read-back after writing.
> 
> Same question here.
> 
Please check my reply on patch 1/2. Thanks
> /P