linux-kernel - Re: [PATCH v3 01/13] iommu: Change type of pasid to unsigned int

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: <CALCETrWe=7CoS8j7w5penF9xWndcrvYDhJpEUdymfLBtjmNUkQ@mail.gmail.com>
Date:   Wed, 17 Jun 2020 13:04:25 -0700
From:   Andy Lutomirski <luto@...nel.org>
To:     "Luck, Tony" <tony.luck@...el.com>
Cc:     Andy Lutomirski <luto@...nel.org>,
        "Yu, Fenghua" <fenghua.yu@...el.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Ingo Molnar <mingo@...hat.com>, Borislav Petkov <bp@...en8.de>,
        Peter Zijlstra <peterz@...radead.org>,
        H Peter Anvin <hpa@...or.com>,
        David Woodhouse <dwmw2@...radead.org>,
        Lu Baolu <baolu.lu@...ux.intel.com>,
        "Hansen, Dave" <dave.hansen@...el.com>,
        Jean-Philippe Brucker <jean-philippe@...aro.org>,
        Christoph Hellwig <hch@...radeed.org>,
        "Raj, Ashok" <ashok.raj@...el.com>,
        "Pan, Jacob jun" <jacob.jun.pan@...el.com>,
        "Jiang, Dave" <dave.jiang@...el.com>,
        "Mehta, Sohil" <sohil.mehta@...el.com>,
        "Shankar, Ravi V" <ravi.v.shankar@...el.com>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        x86 <x86@...nel.org>, iommu <iommu@...ts.linux-foundation.org>
Subject: Re: [PATCH v3 01/13] iommu: Change type of pasid to unsigned int

On Wed, Jun 17, 2020 at 12:39 PM Luck, Tony <tony.luck@...el.com> wrote:
>
> > Is PASID in the uapi at all?
>
>
> $ grep pasid include/uapi/linux/iommu.h
> * @pasid: Process Address Space ID
>         __u32   pasid;
>  * @pasid: Process Address Space ID
>         __u32   pasid;
>  * @pasid: Process Address Space ID
>         __u32   pasid;
>  * - If the PASID bit is set, the @pasid field is populated and the invalidation
>  * @pasid: process address space ID
>         __u64   pasid;
>  * struct iommu_inv_pasid_info - PASID Selective Invalidation Structure
>  * - If the PASID bit is set, the @pasid field is populated and the invalidation
>  * @pasid: process address space ID
> struct iommu_inv_pasid_info {
>         __u64   pasid;
>  * @pasid_info: invalidation data when @granularity is %IOMMU_INV_GRANU_PASID
>                 struct iommu_inv_pasid_info pasid_info;
>  * struct iommu_gpasid_bind_data_vtd - Intel VT-d specific data on device and guest
> struct iommu_gpasid_bind_data_vtd {
>  * struct iommu_gpasid_bind_data - Information about device and guest PASID binding
>  * @hpasid:     Process address space ID used for the guest mm in host IOMMU
>  * @gpasid:     Process address space ID used for the guest mm in guest IOMMU
> struct iommu_gpasid_bind_data {
>         __u64 hpasid;
>         __u64 gpasid;
>                 struct iommu_gpasid_bind_data_vtd vtd;


Aha.  I guess this is considerably older than I thought.