linux-kernel - Re: [PATCH 1/2] drm: replace Compliance/Margin magic numbers with PCI_EXP

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: <CAKb7Uvjj+18cAFW+yBEHWkJLXVTHVMW=zJ-V+uqpzdbcEKsHrQ@mail.gmail.com>
Date:   Thu, 7 Nov 2019 17:30:00 -0500
From:   Ilia Mirkin <imirkin@...m.mit.edu>
To:     Bjorn Helgaas <helgaas@...nel.org>
Cc:     Alex Deucher <alexander.deucher@....com>,
        Christian König <christian.koenig@....com>,
        David Zhou <David1.Zhou@....com>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Frederick Lawler <fred@...dlawl.com>,
        amd-gfx mailing list <amd-gfx@...ts.freedesktop.org>,
        dri-devel <dri-devel@...ts.freedesktop.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Bjorn Helgaas <bhelgaas@...gle.com>
Subject: Re: [PATCH 1/2] drm: replace Compliance/Margin magic numbers with
 PCI_EXP_LNKCTL2 definitions

On Thu, Nov 7, 2019 at 5:21 PM Bjorn Helgaas <helgaas@...nel.org> wrote:
> diff --git a/include/uapi/linux/pci_regs.h b/include/uapi/linux/pci_regs.h
> index 29d6e93fd15e..03446be8a7be 100644
> --- a/include/uapi/linux/pci_regs.h
> +++ b/include/uapi/linux/pci_regs.h
> @@ -673,6 +673,8 @@
>  #define  PCI_EXP_LNKCTL2_TLS_8_0GT     0x0003 /* Supported Speed 8GT/s */
>  #define  PCI_EXP_LNKCTL2_TLS_16_0GT    0x0004 /* Supported Speed 16GT/s */
>  #define  PCI_EXP_LNKCTL2_TLS_32_0GT    0x0005 /* Supported Speed 32GT/s */
> +#define  PCI_EXP_LNKCTL2_ENTER_COMP    0x0010 /* Enter Compliance */
> +#define  PCI_EXP_LNKCTL2_TX_MARGIN     0x0380 /* Enter Compliance */

Without commenting on the meat of the patch, this comment should
probably read "Transmit Margin" or something along those lines?

  -ilia