linux-kernel - Re: [PATCH 2/4] Intel iommu: Speed up processing of the identity

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: <20110330191902.GT18712@sequoia.sous-sol.org>
Date:	Wed, 30 Mar 2011 12:19:02 -0700
From:	Chris Wright <chrisw@...s-sol.org>
To:	Mike Travis <travis@....com>
Cc:	David Woodhouse <dwmw2@...radead.org>,
	Jesse Barnes <jbarnes@...tuousgeek.org>,
	linux-pci@...r.kernel.org, iommu@...ts.linux-foundation.org,
	Mike Habeck <habeck@....com>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/4] Intel iommu: Speed up processing of the
 identity_mapping function

* Mike Travis (travis@....com) wrote:
> @@ -2138,6 +2134,7 @@ static int domain_add_dev_info(struct dm
>  	list_add(&info->global, &device_domain_list);
>  	pdev->dev.archdata.iommu = info;

The si_domain is cached right here...can you not use this instead of
adding an iommu impl. specific bit to pci_dev?

>  	spin_unlock_irqrestore(&device_domain_lock, flags);
> +	pdev->is_identity_mapped = (domain == si_domain);
--
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/