linux-kernel - Re: [PATCH v6 01/53] sparc/PCI: Add mem64 resource parsing for root bus

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]

Date:	Fri, 2 Oct 2015 15:05:37 -0700
From:	Yinghai Lu <yinghai@...nel.org>
To:	Khalid Aziz <khalid.aziz@...cle.com>
Cc:	Bjorn Helgaas <bhelgaas@...gle.com>,
	David Miller <davem@...emloft.net>,
	Benjamin Herrenschmidt <benh@...nel.crashing.org>,
	Wei Yang <weiyang@...ux.vnet.ibm.com>, TJ <linux@....tj>,
	Yijing Wang <wangyijing@...wei.com>,
	"linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v6 01/53] sparc/PCI: Add mem64 resource parsing for root bus

On Fri, Oct 2, 2015 at 1:00 PM, Khalid Aziz <khalid.aziz@...cle.com> wrote:
> On Wed, 2015-09-30 at 22:52 -0700, Yinghai Lu wrote:
>> Found "no compatible bridge window" warning in boot log from T5-8.
>>
>> pci 0000:00:01.0: can't claim BAR 15 [mem 0x100000000-0x4afffffff pref]: no compatible bridge window
>>
>> That resource is above 4G, but does not get offset correctly as
>> root bus only report io and mem32.
>>
>> pci_sun4v f02dbcfc: PCI host bridge to bus 0000:00
>> pci_bus 0000:00: root bus resource [io  0x804000000000-0x80400fffffff] (bus address [0x0000-0xfffffff])
>> pci_bus 0000:00: root bus resource [mem 0x800000000000-0x80007effffff] (bus address [0x00000000-0x7effffff])
>> pci_bus 0000:00: root bus resource [bus 00-77]
>>
>> Add mem64 handling in pci_common for sparc, so we can have 64bit resource
>> registered for root bus at first.
>>
>> After patch, will have:
>> pci_sun4v f02dbcfc: PCI host bridge to bus 0000:00
>> pci_bus 0000:00: root bus resource [io  0x804000000000-0x80400fffffff] (bus address [0x0000-0xfffffff])
>> pci_bus 0000:00: root bus resource [mem 0x800000000000-0x80007effffff] (bus address [0x00000000-0x7effffff])
>> pci_bus 0000:00: root bus resource [mem 0x800100000000-0x8007ffffffff] (bus address [0x100000000-0x7ffffffff])
>> pci_bus 0000:00: root bus resource [bus 00-77]
>>
>> -v2: mem64_space should use mem_space.start as offset.
>> -v3: add IORESOURCE_MEM_64 flag
...
> PCI: Scanning PBM /pci@301
> pci_sun4v f0339c2c: PCI host bridge to bus 0009:00
> pci_bus 0009:00: root bus resource [io  0x2027e40000000-0x2027e4fffffff] (bus address [0x0000-0xfffffff])
> pci_bus 0009:00: root bus resource [mem 0x2024000100000-0x202407effffff] (bus address [0x00000000-0x7eefffff])
> pci_bus 0009:00: root bus resource [mem 0x2024100000000-0x2024dffffffff] (bus address [0xfff00000-0xdffefffff])

Looks like offset for mmio64 is not right.

Please check attached patch on the this platform  and T5-8.

Thanks

Yinghai

View attachment "fix_sparc_mem64_offset.patch" of type "text/x-patch" (630 bytes)