linux-kernel - Re: [PATCH v9 4/5] x86/PCI: Enable a 64bit BAR on AMD Family 15h (Models 30h-3fh) Processors v5

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: <3443aad0-8c3b-b97e-685a-96b0866827be@amd.com>
Date:   Tue, 21 Nov 2017 14:34:36 +0100
From:   Christian König <christian.koenig@....com>
To:     Boris Ostrovsky <boris.ostrovsky@...cle.com>, helgaas@...nel.org,
        linux-pci@...r.kernel.org, dri-devel@...ts.freedesktop.org,
        linux-kernel@...r.kernel.org, amd-gfx@...ts.freedesktop.org
Subject: Re: [PATCH v9 4/5] x86/PCI: Enable a 64bit BAR on AMD Family 15h
 (Models 30h-3fh) Processors v5

Hi Boris,

attached are two patches.

The first one is a trivial fix for the infinite loop issue, it now 
correctly aborts the fixup when it can't find address space for the root 
window.

The second is a workaround for your board. It simply checks if there is 
exactly one Processor Function to apply this fix on.

Both are based on linus current master branch. Please test if they fix 
your issue.

Thanks for the help,
Christian.

Am 20.11.2017 um 17:33 schrieb Boris Ostrovsky:
> On 11/20/2017 11:07 AM, Christian König wrote:
>> Am 20.11.2017 um 16:51 schrieb Boris Ostrovsky:
>>> (and then it breaks differently as a Xen guest --- we hung on the last
>>> pci_read_config_dword(), I haven't looked at this at all yet)
>> Hui? How does this fix applies to a Xen guest in the first place?
>>
>> Please provide the output of "lspci -nn" and explain further what is
>> your config with Xen.
>>
>>
>
> This is dom0.
>
> -bash-4.1# lspci -nn
> 00:00.0 Host bridge [0600]: ATI Technologies Inc RD890 Northbridge only
> dual slot (2x16) PCI-e GFX Hydra part [1002:5a10] (rev 02)
> 00:00.2 Generic system peripheral [0806]: ATI Technologies Inc Device
> [1002:5a23]
> 00:0d.0 PCI bridge [0604]: ATI Technologies Inc RD890 PCI to PCI bridge
> (external gfx1 port B) [1002:5a1e]
> 00:11.0 SATA controller [0106]: ATI Technologies Inc SB700/SB800 SATA
> Controller [AHCI mode] [1002:4391]
> 00:12.0 USB Controller [0c03]: ATI Technologies Inc SB700/SB800 USB
> OHCI0 Controller [1002:4397]
> 00:12.1 USB Controller [0c03]: ATI Technologies Inc SB700 USB OHCI1
> Controller [1002:4398]
> 00:12.2 USB Controller [0c03]: ATI Technologies Inc SB700/SB800 USB EHCI
> Controller [1002:4396]
> 00:13.0 USB Controller [0c03]: ATI Technologies Inc SB700/SB800 USB
> OHCI0 Controller [1002:4397]
> 00:13.1 USB Controller [0c03]: ATI Technologies Inc SB700 USB OHCI1
> Controller [1002:4398]
> 00:13.2 USB Controller [0c03]: ATI Technologies Inc SB700/SB800 USB EHCI
> Controller [1002:4396]
> 00:14.0 SMBus [0c05]: ATI Technologies Inc SBx00 SMBus Controller
> [1002:4385] (rev 3d)
> 00:14.3 ISA bridge [0601]: ATI Technologies Inc SB700/SB800 LPC host
> controller [1002:439d]
> 00:14.4 PCI bridge [0604]: ATI Technologies Inc SBx00 PCI to PCI Bridge
> [1002:4384]
> 00:14.5 USB Controller [0c03]: ATI Technologies Inc SB700/SB800 USB
> OHCI2 Controller [1002:4399]
> 00:18.0 Host bridge [0600]: Advanced Micro Devices [AMD] Device [1022:1600]
> 00:18.1 Host bridge [0600]: Advanced Micro Devices [AMD] Device [1022:1601]
> 00:18.2 Host bridge [0600]: Advanced Micro Devices [AMD] Device [1022:1602]
> 00:18.3 Host bridge [0600]: Advanced Micro Devices [AMD] Device [1022:1603]
> 00:18.4 Host bridge [0600]: Advanced Micro Devices [AMD] Device [1022:1604]
> 00:18.5 Host bridge [0600]: Advanced Micro Devices [AMD] Device [1022:1605]
> 00:19.0 Host bridge [0600]: Advanced Micro Devices [AMD] Device [1022:1600]
> 00:19.1 Host bridge [0600]: Advanced Micro Devices [AMD] Device [1022:1601]
> 00:19.2 Host bridge [0600]: Advanced Micro Devices [AMD] Device [1022:1602]
> 00:19.3 Host bridge [0600]: Advanced Micro Devices [AMD] Device [1022:1603]
> 00:19.4 Host bridge [0600]: Advanced Micro Devices [AMD] Device [1022:1604]
> 00:19.5 Host bridge [0600]: Advanced Micro Devices [AMD] Device [1022:1605]
> 01:04.0 VGA compatible controller [0300]: Matrox Graphics, Inc. MGA
> G200eW WPCM450 [102b:0532] (rev 0a)
> 02:00.0 Ethernet controller [0200]: Intel Corporation 82576 Gigabit
> Network Connection [8086:10c9] (rev 01)
> 02:00.1 Ethernet controller [0200]: Intel Corporation 82576 Gigabit
> Network Connection [8086:10c9] (rev 01)
> -bash-4.1#
>
>
> -boris



View attachment "0001-x86-PCI-fix-infinity-loop-in-search-for-64bit-BAR-pl.patch" of type "text/x-patch" (1225 bytes)

View attachment "0002-x86-PCI-only-enable-a-64bit-BAR-on-single-socket-AMD.patch" of type "text/x-patch" (2370 bytes)