linux-kernel - Re: [PATCH 1/1] scsi: qla1280: Make 64-bit DMA addressing a Kconfig option

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 for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <aIh5HY1nVGusQ9Yb@infradead.org>
Date: Tue, 29 Jul 2025 00:32:45 -0700
From: Christoph Hellwig <hch@...radead.org>
To: Magnus Lindholm <linmag7@...il.com>
Cc: linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org,
	linux-alpha@...r.kernel.org, martin.petersen@...cle.com,
	James.Bottomley@...senpartnership.com, hch@...radead.org,
	macro@...am.me.uk
Subject: Re: [PATCH 1/1] scsi: qla1280: Make 64-bit DMA addressing a Kconfig
 option

On Mon, Jul 28, 2025 at 06:34:14PM +0200, Magnus Lindholm wrote:
> Make 64-bit DMA addressing a Kconfig option.
> 
> While defaulting to 64-bit addressing, this gives the user the option
> to revert to 32-bits when necessary without messing with the kernel
> source. The Kconfig help text also points out the issues with tsunami
> based alphas with more than 2GB RAM and 32-bit PCI Qlogic SCSI
> controllers.

Compile time options like this are annoying as they require
distributions to pick a default.  Why not at least a module option
even if it just a workaround?