linux-kernel - PCI: minimal alignment of resources

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-next>] [day] [month] [year] [list]

Date:	Wed, 20 Aug 2014 23:05:29 +0200
From:	Matevz Langus <matevz.langus@...ea.si>
To:	linux-kernel@...r.kernel.org
Subject: PCI: minimal alignment of resources

Hi,

I would like to ask if somebody is aware of a correct way to change they way kernel aligns PCI resources. By default it uses minimal alignment of 1 MB.

Due to the hardware limitation I would need to change that down to 64 kB. With this change PCI Endpoints with many small BARs would fit into limited memory space available on the RC.
This could be useful for all smaller embedded systems.

It looks just changing aligns in pbus_size_mem (in file setup-bus.c) works but not with all PCI EP drivers. Some will crash during init.

Regards,
  Matevz Langus--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/