From mboxrd@z Thu Jan 1 00:00:00 1970 From: Peter Chubb Date: Tue, 17 Dec 2002 21:57:07 +0000 Subject: Re: [Linux-ia64] RTC support on ia64 Message-Id: List-Id: References: In-Reply-To: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-ia64@vger.kernel.org >>>>> "Alex" = Alex Williamson writes: Alex> Joel, Does this provide more functionality than the EFI RTC? Alex> Concerns I have w/ it on ia64 is that the rtc driver assumes you Alex> have a legacy rtc at the legacy irq and port address. This Alex> won't work on HP zx1 boxes, the legacy hardware doesn't exist. Alex> In the future, there's a possibility that the port address could Alex> be allocated to non-legacy purposes. Maybe ACPI could tell you Alex> if you have a legacy RTC, it could at least tell you if you Alex> support PC/AT compatible interrupts. Thanks, Yes it does. There's no way to get a regular interrupt into user space from the EFI RTC. I've been using the PMU to generate regular interrupts, and have a locally-modified amlat benchmark that does that. -- Dr Peter Chubb peterc@gelato.unsw.edu.au You are lost in a maze of BitKeeper repositories, all almost the same.