netdev - Re: [PATCH net-next v4 2/7] enic: Make MSI-X I/O interrupts come after the other required ones

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Message-ID: <ff83386c-2102-4497-be0a-772bd7e6c30c@linux.dev>
Date: Thu, 14 Nov 2024 16:22:37 +0000
From: Vadim Fedorenko <vadim.fedorenko@...ux.dev>
To: Nelson Escobar <neescoba@...co.com>, John Daley <johndale@...co.com>,
 Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
 Paolo Abeni <pabeni@...hat.com>, Christian Benvenuti <benve@...co.com>,
 Satish Kharat <satishkh@...co.com>, Andrew Lunn <andrew+netdev@...n.ch>,
 "David S. Miller" <davem@...emloft.net>
Cc: netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
 Simon Horman <horms@...nel.org>
Subject: Re: [PATCH net-next v4 2/7] enic: Make MSI-X I/O interrupts come
 after the other required ones

On 13/11/2024 23:56, Nelson Escobar wrote:
> The VIC hardware has a constraint that the MSIX interrupt used for errors
> be specified as a 7 bit number.  Before this patch, it was allocated after
> the I/O interrupts, which would cause a problem if 128 or more I/O
> interrupts are in use.
> 
> So make the required interrupts come before the I/O interrupts to
> guarantee the error interrupt offset never exceeds 7 bits.
> 
> Co-developed-by: John Daley <johndale@...co.com>
> Signed-off-by: John Daley <johndale@...co.com>
> Co-developed-by: Satish Kharat <satishkh@...co.com>
> Signed-off-by: Satish Kharat <satishkh@...co.com>
> Reviewed-by: Simon Horman <horms@...nel.org>
> Signed-off-by: Nelson Escobar <neescoba@...co.com>

Reviewed-by: Vadim Fedorenko <vadim.fedorenko@...ux.dev>