linux-kernel - Re: [PATCH v2] iommu: add support for drivers that manage iommu explicitly

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Message-ID: <20190722142833.GB12009@8bytes.org>
Date:   Mon, 22 Jul 2019 16:28:33 +0200
From:   Joerg Roedel <joro@...tes.org>
To:     Rob Clark <robdclark@...il.com>
Cc:     iommu@...ts.linux-foundation.org, linux-arm-msm@...r.kernel.org,
        aarch64-laptops@...ts.linaro.org,
        Rob Clark <robdclark@...omium.org>,
        Will Deacon <will@...nel.org>,
        Robin Murphy <robin.murphy@....com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        Rasmus Villemoes <linux@...musvillemoes.dk>,
        Andy Shevchenko <andy.shevchenko@...il.com>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Bartosz Golaszewski <brgl@...ev.pl>,
        Sudeep Holla <sudeep.holla@....com>,
        Joe Perches <joe@...ches.com>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] iommu: add support for drivers that manage iommu
 explicitly

On Wed, Jul 10, 2019 at 11:28:30AM -0700, Rob Clark wrote:
> --- a/include/linux/device.h
> +++ b/include/linux/device.h
> @@ -282,7 +282,8 @@ struct device_driver {
>  	struct module		*owner;
>  	const char		*mod_name;	/* used for built-in modules */
>  
> -	bool suppress_bind_attrs;	/* disables bind/unbind via sysfs */
> +	bool suppress_bind_attrs:1;	/* disables bind/unbind via sysfs */
> +	bool driver_manages_iommu:1;	/* driver manages IOMMU explicitly */

Who will set this bit?


Regards,

	Joerg