From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Thinus Viljoen" Subject: Disabling SATA hardware interrupts Date: Mon, 4 Dec 2006 13:08:50 +0200 Message-ID: Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from wx-out-0506.google.com ([66.249.82.226]:9134 "EHLO wx-out-0506.google.com") by vger.kernel.org with ESMTP id S935734AbWLDLIz (ORCPT ); Mon, 4 Dec 2006 06:08:55 -0500 Received: by wx-out-0506.google.com with SMTP id h27so3762307wxd for ; Mon, 04 Dec 2006 03:08:50 -0800 (PST) Content-Disposition: inline Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: linux-ide@vger.kernel.org Hi I have the following questions: 1. Is it possible to (temporarily) disable the SATA hardware from generating interrupts (either the controller or the actual HDD)? 2. if so, how? 3. if so, is it safe? My setup is as follows: Modules loaded: ata_piix, libata, scsi_mod, ahci (ahci doesn't seem to be used) SATA controller (from lspci): 00:1f.2 IDE interface: Intel Corporation 82801FBM (ICH6M) SATA Controller (rev 04) HDD: Hitachi Travelstar, model HTS541080G9SA00 Reason: I am building a real-time system using RTAI. I do not need to access the HDD while in real-time mode, but I must access another peripheral which shares the interrupt with libata. I want do disable the libata interrupts while in real-time mode, to improve the timing characteristics of the real-time peripheral. Thanks Thinus Viljoen