linux-kernel - Re: [PATCH RFC v2 12/29] PCI/MSI: Introduce pcim_enable

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: <20131024110135.GD13159@mtj.dyndns.org>
Date:	Thu, 24 Oct 2013 12:01:35 +0100
From:	Tejun Heo <tj@...nel.org>
To:	David Laight <David.Laight@...LAB.COM>
Cc:	Alexander Gordeev <agordeev@...hat.com>,
	linux-kernel@...r.kernel.org, Bjorn Helgaas <bhelgaas@...gle.com>,
	Michael Ellerman <michael@...erman.id.au>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Ben Hutchings <bhutchings@...arflare.com>,
	Mark Lord <kernel@...rt.ca>, "H. Peter Anvin" <hpa@...or.com>,
	linux-pci@...r.kernel.org
Subject: Re: [PATCH RFC v2 12/29] PCI/MSI: Introduce pcim_enable_msi*()
 family helpers

Hello,

On Thu, Oct 24, 2013 at 11:57:40AM +0100, David Laight wrote:
> > > ...would turn into a single helper call....
> > >
> > > 	rc = pcim_enable_msix_range(adapter->pdev,
> > > 				    adapter->msix_entries,
> > > 				    nvec,
> > > 				    FOO_DRIVER_MINIMUM_NVEC);
> > 
> > I haven't looked into any details but, if the above works for most use
> > cases, it looks really good to me.
> 
> The one case it doesn't work is where the driver either
> wants the full number or the minimum number - but not
> a value in between.
> 
> Might be worth adding an extra parameter so that this
> (and maybe other) odd requirements can be met.
> 
> Some static inline functions could be used for the common cases.

If those are edge cases, I don't think it's a big deal no matter what
we do.

Thanks.

-- 
tejun
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/