Hi Lokesh, I don¹t think anyone has looked at gem5 DVFS support for X86 until now, and I fear there might be quite some work involved.
We have recently pushed a bunch of patches to make sure DVFS works ³out of the box² with ARM, and should soon have some documentation available on the wiki. This option will most likely involve far less issues... Andreas On 9/28/14, 8:56 PM, "Lokesh Jindal via gem5-dev" <[email protected]> wrote: >On 09/18/2014 12:02 PM, Lokesh Jindal wrote: >> RSDP PTR in x86 FS simulation : A valid RSDP was not found Hello, >> >> I am very new to gem5. I am trying to run x86 FS simulation with a >> linux kernel(v2.6.28.4)compiled with ACPI "enabled". I am seeing the >> following error: >> /"ACPI Error (tbxfroot-0219): A valid RSDP was not found [20080926]"/ >> >> The kernel is not able to locate the "RSD PTR " signature. I can see >> some RSDP-related code in /src/arch/x86/bios directory in gem5, which >> I am "guessing" takes care of setting up ACPI desriptor tables. Could >> someone explain me some details here: >> 1. What does linux kernel expect from Gem5 related to ACPI set up and >> init? >> 2. What kind of ACPI related set up (including taking care of RSDP >> desriptor tables) is actually done by Gem5? >> 3. Most importantly, how to fix the above mentioned error? >> >> I have attached log files for reference and the .config file I used >> while compiling linux kernel. Pardon me if I have explained something >> unclearly/incorrectly. >> >> Thanks and Regards >> Lokesh Jindal. >> UW-Madison. >Hey, > >Could anyone help me out here? >My ultimate aim is to enable support for DVFS for linux kernel in x86 >arch on gem5. And this is the first step. Kindly provide some insight. > >Thanks >Lokesh Jindal >Grad student, UW-Madison >_______________________________________________ >gem5-dev mailing list >[email protected] >http://m5sim.org/mailman/listinfo/gem5-dev > -- IMPORTANT NOTICE: The contents of this email and any attachments are confidential and may also be privileged. If you are not the intended recipient, please notify the sender immediately and do not disclose the contents to any other person, use it for any purpose, or store or copy the information in any medium. Thank you. ARM Limited, Registered office 110 Fulbourn Road, Cambridge CB1 9NJ, Registered in England & Wales, Company No: 2557590 ARM Holdings plc, Registered office 110 Fulbourn Road, Cambridge CB1 9NJ, Registered in England & Wales, Company No: 2548782 _______________________________________________ gem5-dev mailing list [email protected] http://m5sim.org/mailman/listinfo/gem5-dev
