linux-kernel - Re: [Patch v1] i40e: limit the msix vectors based on housekeeping CPUs

lists.openwall.net		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 linux-hardening linux-cve-announce 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]

Message-ID: <20200616080309.GA21210@infradead.org>
Date:   Tue, 16 Jun 2020 01:03:09 -0700
From:   Christoph Hellwig <hch@...radead.org>
To:     Nitesh Narayan Lal <nitesh@...hat.com>
Cc:     linux-kernel@...r.kernel.org, frederic@...nel.org,
        mtosatti@...hat.com, sassmann@...hat.com,
        jeffrey.t.kirsher@...el.com, jacob.e.keller@...el.com,
        jlelli@...hat.com
Subject: Re: [Patch v1] i40e: limit the msix vectors based on housekeeping
 CPUs

On Mon, Jun 15, 2020 at 04:21:25PM -0400, Nitesh Narayan Lal wrote:
> +	hk_flags = HK_FLAG_DOMAIN | HK_FLAG_WQ;
> +	mask = housekeeping_cpumask(hk_flags);
> +	cpus = cpumask_weight(mask);

Code like this has no business inside a driver.  Please provide a
proper core API for it instead.  Also please wire up
pci_alloc_irq_vectors* to use this API as well.