linux-kernel - Re: [PATCH v8 01/10] iommu/vt-d: Update iommu_attach

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]

Date:	Mon, 12 Jan 2015 16:18:55 +0100
From:	Joerg Roedel <joro@...tes.org>
To:	"Li, Zhen-Hua" <zhen-hual@...com>
Cc:	dwmw2@...radead.org, indou.takao@...fujitsu.com, bhe@...hat.com,
	vgoyal@...hat.com, dyoung@...hat.com,
	iommu@...ts.linux-foundation.org, linux-kernel@...r.kernel.org,
	linux-pci@...r.kernel.org, kexec@...ts.infradead.org,
	alex.williamson@...hat.com, ddutile@...hat.com,
	ishii.hironobu@...fujitsu.com, bhelgaas@...gle.com,
	doug.hatch@...com, jerry.hoemann@...com, tom.vaden@...com,
	li.zhang6@...com, lisa.mitchell@...com, billsumnerlinux@...il.com,
	rwright@...com
Subject: Re: [PATCH v8 01/10] iommu/vt-d: Update iommu_attach_domain() and
 its callers

On Mon, Jan 12, 2015 at 03:06:19PM +0800, Li, Zhen-Hua wrote:
> Allow specification of the domain-id for the new domain.
> This patch only adds the 'did' parameter to iommu_attach_domain()
> and modifies all of its callers to specify the default value of -1
> which says "no did specified, allocate a new one".

I think its better to keep the old iommu_attach_domain() interface in
place and introduce a new function (like iommu_attach_domain_with_id()
or something) which has the additional parameter. Then you can rewrite
iommu_attach_domain():

	iommu_attach_domai(...)
	{
		return iommu_attach_domain_with_id(..., -1);
	}

This way you don't have to update all the callers of
iommu_attach_domain() and the interface is more readable.


	Joerg

--
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/