linux-kernel - RE: [PATCH] scsi: megaraid_sas: use spin

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: <alpine.LNX.2.23.453.2010221424390.6@nippy.intranet>
Date:   Thu, 22 Oct 2020 14:29:16 +1100 (AEDT)
From:   Finn Thain <fthain@...egraphics.com.au>
To:     Tianxianting <tian.xianting@....com>
cc:     "kashyap.desai@...adcom.com" <kashyap.desai@...adcom.com>,
        "sumit.saxena@...adcom.com" <sumit.saxena@...adcom.com>,
        "shivasharan.srikanteshwara@...adcom.com" 
        <shivasharan.srikanteshwara@...adcom.com>,
        "jejb@...ux.ibm.com" <jejb@...ux.ibm.com>,
        "martin.petersen@...cle.com" <martin.petersen@...cle.com>,
        "megaraidlinux.pdl@...adcom.com" <megaraidlinux.pdl@...adcom.com>,
        "linux-scsi@...r.kernel.org" <linux-scsi@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] scsi: megaraid_sas: use spin_lock() in hard IRQ

On Thu, 22 Oct 2020, Tianxianting wrote:

> Do you mean Megasas raid can be used in m68k arch?

m68k is one example of an architecture on which the unstated assumptions 
in your patch would be invalid. Does this help to clarify what I wrote?

If Megasas raid did work on m68k, I'm sure it could potentially benefit 
from the theoretical performance improvement from your patch.

So perhaps you would consider adding support for slower CPUs like m68k.