libquantum runs fine. I will do a sweep of all the apps and post the results.
On Thu, Dec 11, 2014 at 11:58 AM, mike upton <[email protected]> wrote: > with --mem-type=SimpleMemory it panics and dies. > > this is using bzip2, I am going to try another benchmark as well. > > > without SimpleMemory, > bzip2 hangs sometime between the 20M and 30M instruction. Time is > advancing, but instructions are not retiring. > > > > > On Thu, Dec 11, 2014 at 11:42 AM, mike upton <[email protected]> > wrote: > >> I was using SE, with just se.py --cpu-type=kvm >> >> >> >> On Thu, Dec 11, 2014 at 7:52 AM, Andreas Hansson via gem5-dev < >> [email protected]> wrote: >> >>> Hi Alex, Mike, >>> >>> I¹ll try and fix this whole issue of the refresh event once and for all. >>> SimpleMemory should only really be used for fast-forwarding and >>> high-level >>> sweeps, and I would like to ensure there are really no reasons to move >>> away from the DRAM controller. >>> >>> It seems the sensible thing to do is to use startup and drainResume as >>> the >>> points where we check the mode of the memory system and either >>> disable/enable the refresh event of the DRAM controller. >>> >>> Hopefully I will have something working before the weekend. >>> >>> Andreas >>> >>> On 11/12/2014 15:32, "Dutu, Alexandru via gem5-dev" <[email protected]> >>> wrote: >>> >>> >Hi Mike, >>> > >>> >Are you running with SimpleMemory, SE or FS? On my AMD platform, for SE, >>> >I get very similar execution times with old implementation, for >>> >SimpleMemory and classic memory with detailed memory controller. Also >>> >what linux kernel are you using? >>> > >>> >Thanks, >>> >Alex >>> > >>> >-----Original Message----- >>> >From: gem5-dev [mailto:[email protected]] On Behalf Of mike >>> upton >>> >via gem5-dev >>> >Sent: Wednesday, December 10, 2014 3:59 PM >>> >To: gem5 Developer List >>> >Subject: Re: [gem5-dev] x86 SE kvm functionality (AMD vs Intel) >>> > >>> >I was testing this on both Intel and AMD platforms. >>> > >>> >The new code does seem to work for Intel platforms. >>> > >>> >The new code also seems to clean up a bunch of runtime warnings I was >>> >getting on AMD platforms. >>> > >>> >However the new code on AMD is either much slower, or it is stuck in a >>> >loop. >>> >A test that runs for 30 sec with the old code is running for more than >>> 10 >>> >mins, and still has a long way to go. >>> > >>> > >>> > >>> >On Wed, Dec 10, 2014 at 12:27 PM, Gabe Black via gem5-dev >>> ><[email protected] >>> >> wrote: >>> > >>> >> That's not actually extending the TSS limit, that's what it works out >>> >> to be with the granularity bit set. The AM and WP bits were set to the >>> >> wrong thing according to the comments next to them I'm pretty sure. If >>> >> we wanted the other behavior, we might be able to change them back and >>> >>have it work. >>> >> The _BASE registers hold the base of segments as they're specified by >>> >> the ISA. The _EFF_BASE registers hold the base that will actually be >>> >> used in address calculations based on the mode of the CPU. For >>> >> instance, if you're in 64 bit mode, the _BASE of DS might still be >>> >> 0xFFF from when you were in another mode. The _EFF_BASE would be 0 >>> >> though, since the DS base is ignored in that case. _EFF_BASE may not >>> >> be used by the KVM CPU, but it should be set up anyway in case we >>> >>switch back to a regular CPU. >>> >> >>> >> Gabe >>> >> >>> >> On Wed, Dec 10, 2014 at 10:20 AM, Dutu, Alexandru via gem5-dev < >>> >> [email protected]> wrote: >>> >> >>> >> > Thank you for all the clarifications. I see that for SE to work on >>> >> > vmx >>> >> the >>> >> > TSS limit had to be extended, am and wp bits in CR0 had to be reset >>> >> > and *_EFF_BASE registers had be set in addition to *_BASE registers >>> >> > for TR >>> >> TSG >>> >> > IDTR. I wonder what is TR_EFF_BASE. It seems that the contents of TR >>> >> > register (which gets passed to kvm) are the same if with or without >>> >> > *_EFF_BASE registers set. >>> >> > >>> >> > Thank you, >>> >> > Alex >>> >> > >>> >> > -----Original Message----- >>> >> > From: gem5-dev [mailto:[email protected]] On Behalf Of Gabe >>> >> Black >>> >> > via gem5-dev >>> >> > Sent: Wednesday, December 10, 2014 1:21 AM >>> >> > To: gem5 Developer List >>> >> > Subject: Re: [gem5-dev] x86 SE kvm functionality (AMD vs Intel) >>> >> > >>> >> > Ok, I got SE working too. I'll clean up my patch and send that out >>> >> > in a bit. >>> >> > >>> >> > Gabe >>> >> > >>> >> > On Tue, Dec 9, 2014 at 9:41 PM, Gabe Black <[email protected]> >>> >>wrote: >>> >> > >>> >> > > I figured out what the other problem was, so here's the review. >>> >> > > >>> >> > > http://reviews.gem5.org/r/2557/ >>> >> > > >>> >> > > Gabe >>> >> > > >>> >> > > On Tue, Dec 9, 2014 at 5:00 PM, Gabe Black <[email protected]> >>> >> wrote: >>> >> > > >>> >> > >> It was attached in my sent mail. Maybe it's being blocked by >>> >> something? >>> >> > >> I'm hunting down another problem so I don't want to move my tree >>> >> > >> around too much, but once that's done I'll post it as a review. >>> >> > >> >>> >> > >> Gabe >>> >> > >> >>> >> > >> On Tue, Dec 9, 2014 at 4:51 PM, Dutu, Alexandru via gem5-dev < >>> >> > >> [email protected]> wrote: >>> >> > >> >>> >> > >>> I haven't received any attachment to your email. So I don't have >>> >> > >>> your patch. >>> >> > >>> >>> >> > >>> Alex >>> >> > >>> >>> >> > >>> -----Original Message----- >>> >> > >>> From: gem5-dev [mailto:[email protected]] On Behalf Of >>> >> > >>> Gabe Black via gem5-dev >>> >> > >>> Sent: Tuesday, December 09, 2014 6:42 PM >>> >> > >>> To: gem5 Developer List >>> >> > >>> Subject: Re: [gem5-dev] x86 SE kvm functionality (AMD vs Intel) >>> >> > >>> >>> >> > >>> And... it turns out the KVM change wasn't necessary. If you're >>> >> > >>> working from my patch, get rid of where the segment limit is >>> >> > >>> divided >>> >> > by PageBytes. >>> >> > >>> That was only necessary because I wasn't adding 0xFFF to the >>> >> > >>> limit when the granularity bit was set. >>> >> > >>> >>> >> > >>> Gabe >>> >> > >>> >>> >> > >>> On Tue, Dec 9, 2014 at 4:31 PM, Gabe Black >>> >> > >>> <[email protected]> >>> >> > wrote: >>> >> > >>> >>> >> > >>> > Oh, also segment limits weren't being computed correctly in >>> >> > >>> > the installSegDesc function, although I don't think that was >>> >> > >>> > from the KVM stuff. Once it was fixed it required adjusting >>> >> > >>> > the KVM stuff a little, though. >>> >> > >>> > >>> >> > >>> > Gabe >>> >> > >>> > >>> >> > >>> > On Tue, Dec 9, 2014 at 4:29 PM, Gabe Black >>> >> > >>> > <[email protected]> >>> >> > >>> wrote: >>> >> > >>> > >>> >> > >>> >> Here is my patch so far. There were a few things wrong, >>> >> > >>> >> although I didn't really keep notes. The limits were mixed >>> >> > >>> >> up, the long mode bit was set on all descriptors when it's >>> >> > >>> >> only valid for the code segment, privilege level >>> >> > >>> >> 0 is the OS and 3 is for applications and not the other way >>> >> > >>> >> around, and I think the type was being set wrong for one of >>> >> > >>> >> the >>> >> > segments. >>> >> > >>> >> Also, the syscall and sysenter registers (star and friends) >>> >> > >>> >> require the segments in the GDT to be in a particular order >>> >> > >>> >> which I don't >>> >> > >>> think they were. >>> >> > >>> >> >>> >> > >>> >> Gabe >>> >> > >>> >> >>> >> > >>> >> On Tue, Dec 9, 2014 at 4:22 PM, Dutu, Alexandru via gem5-dev >>> >> > >>> >> < [email protected]> wrote: >>> >> > >>> >> >>> >> > >>> >>> So, I am doing this on an AMD system and I have SE working >>> >> > >>> >>> and am able to get FS entering into virtualized mode. >>> >> > >>> >>> However, in FS I get an early exception while the kernel is >>> >> > >>> >>> booting. This seems a bit different from what Nilay and >>> >>Adrian observed for FS. >>> >> > >>> >>> Could you please share the diffs that got FS working? >>> >> > >>> >>> >>> >> > >>> >>> Thanks, >>> >> > >>> >>> Alex >>> >> > >>> >>> >>> >> > >>> >>> -----Original Message----- >>> >> > >>> >>> From: gem5-dev [mailto:[email protected]] On Behalf >>> >> > >>> >>> Of Gabe Black via gem5-dev >>> >> > >>> >>> Sent: Tuesday, December 09, 2014 6:07 PM >>> >> > >>> >>> To: gem5 Developer List >>> >> > >>> >>> Subject: Re: [gem5-dev] x86 SE kvm functionality (AMD vs >>> >> > >>> >>> Intel) >>> >> > >>> >>> >>> >> > >>> >>> Oh, I see you have FS working again and not SE. NM, I'll >>> >> > >>> >>> keep >>> >> > >>> looking. >>> >> > >>> >>> >>> >> > >>> >>> Gabe >>> >> > >>> >>> >>> >> > >>> >>> On Tue, Dec 9, 2014 at 4:04 PM, Gabe Black >>> >> > >>> >>> <[email protected]> >>> >> > >>> wrote: >>> >> > >>> >>> >>> >> > >>> >>> > I have FS working again which is good, but I'm still >>> >> > >>> >>> > having problems with SE. If you could let me know what you >>> >> > >>> >>> > did to get things going that would be very helpful. >>> >> > >>> >>> > >>> >> > >>> >>> > Gabe >>> >> > >>> >>> > >>> >> > >>> >>> > On Tue, Dec 9, 2014 at 10:06 AM, Dutu, Alexandru via >>> >> > >>> >>> > gem5-dev < [email protected]> wrote: >>> >> > >>> >>> > >>> >> > >>> >>> >> Hi Adrian, >>> >> > >>> >>> >> >>> >> > >>> >>> >> Sorry for missing your first email. I do see the >>> >> > >>> >>> >> interchanged segment limits for full system mode, though >>> >> > >>> >>> >> I get a different behaviour on my system. The simulation >>> >> > >>> >>> >> seems to hang in the >>> >> > >>> following manner: >>> >> > >>> >>> >> >>> >> > >>> >>> >> Processor #0 (Bootup-CPU) I/O APIC #1 at 0xFEC00000. >>> >> > >>> >>> >> Setting APIC routing to flat >>> >> > >>> >>> >> Processors: 1 >>> >> > >>> >>> >> PANIC: early exception rip ffffffff807909a9 error 9 cr2 >>> >> > >>> >>> >> ffffffffff5fd020 >>> >> > >>> >>> >> >>> >> > >>> >>> >> Can please provide a patch with all the modifications >>> >> > >>> >>> >> that fixed the issue on your system? >>> >> > >>> >>> >> >>> >> > >>> >>> >> Thank you, >>> >> > >>> >>> >> Alex >>> >> > >>> >>> >> ________________________________________ >>> >> > >>> >>> >> From: gem5-dev [[email protected]] on behalf of >>> >> > >>> >>> >> Adrián Colaso Diego via gem5-dev [[email protected]] >>> >> > >>> >>> >> Sent: Tuesday, December 09, 2014 2:09 AM >>> >> > >>> >>> >> To: gem5 Developer List >>> >> > >>> >>> >> Subject: Re: [gem5-dev] x86 SE kvm functionality (AMD vs >>> >> > >>> >>> >> Intel) >>> >> > >>> >>> >> >>> >> > >>> >>> >> You are right Nilay. I sent an email last week but nobody >>> >> > >>> >>> >> has >>> >> > >>> replied. >>> >> > >>> >>> >> >>> >> > >>> >>> >> It seems that descriptors (cdDesc, dsDesc and tssDesc) >>> >> > >>> >>> >> located in src/arch/x86/system.cc file are not >>> >> > >>> >>> >> well-initialized and as a consequence kvm does not work >>> >> > >>> >>> >> when >>> >> > running in full-system mode. >>> >> > >>> >>> >> >>> >> > >>> >>> >> Segment limits values (limitHigh and limitLow) are >>> >> > >>> >>> >> interchanged and several segment descriptor values are >>> >> > >>> >>> >> wrong too. If these values are corrected kvm works again >>> >>as before. >>> >> > >>> >>> >> >>> >> > >>> >>> >> Adrian >>> >> > >>> >>> >> >>> >> > >>> >>> >> El lun, 08-12-2014 a las 22:50 -0600, Nilay Vaish via >>> >> > >>> >>> >> gem5-dev >>> >> > >>> >>> escribió: >>> >> > >>> >>> >> > I also faced problem in getting KVM CPU to run in FS >>> >>mode. >>> >> > >>> >>> >> > I figured >>> >> > >>> >>> >> that >>> >> > >>> >>> >> > the following changeset causes problems: >>> >> > >>> >>> >> > >>> >> > >>> >>> >> > author Alexandru Dutu <[email protected]> >>> >> > >>> >>> >> > Sun Nov 23 18:01:08 2014 -0800 (2 weeks ago) >>> >> > >>> >>> >> > changeset 10554 fe2e2f06a7c8 >>> >> > >>> >>> >> > >>> >> > >>> >>> >> > I saw the hardware reason 0x80000021, but did not try >>> >> > >>> >>> >> > to figure what was going on wrong. >>> >> > >>> >>> >> > >>> >> > >>> >>> >> > -- >>> >> > >>> >>> >> > Nilay >>> >> > >>> >>> >> > >>> >> > >>> >>> >> > On Mon, 8 Dec 2014, Gabe Black via gem5-dev wrote: >>> >> > >>> >>> >> > >>> >> > >>> >>> >> > > I'm pretty sure entering 64 bit mode is the same >>> >> > >>> >>> >> > > between AMD and Intel CPUs. I vaguely remember there >>> >> > >>> >>> >> > > being some subtle page table difference though, and >>> >> > >>> >>> >> > > gem5 is building the page tables in SE mode instead >>> of >>> >>the kernel. >>> >> > >>> >>> >> > > >>> >> > >>> >>> >> > > Gabe >>> >> > >>> >>> >> > > >>> >> > >>> >>> >> > > On Mon, Dec 8, 2014 at 7:44 PM, Dutu, Alexandru via >>> >> > >>> >>> >> > > gem5-dev < [email protected]> wrote: >>> >> > >>> >>> >> > > >>> >> > >>> >>> >> > >> Hi Mike, >>> >> > >>> >>> >> > >> >>> >> > >>> >>> >> > >> trace-cmd is a very handy tool to get an overview of >>> >> > >>> >>> >> > >> what the kvm >>> >> > >>> >>> >> kernel >>> >> > >>> >>> >> > >> module is doing before going into gdb. In extreme >>> >> > >>> >>> >> > >> cases ftrace can be useful as well. >>> >> > >>> >>> >> > >> What is the error that you are seeing? Is it still >>> >> > >>> >>> >> > >> failing to enter virtualized mode? >>> >> > >>> >>> >> > >> >>> >> > >>> >>> >> > >> If that is the case and the hardware reason is >>> >> > >>> >>> >> > >> 0x80000021, that >>> >> > >>> >>> >> seems to >>> >> > >>> >>> >> > >> be an unrecoverable exception >>> >> > >>> >>> >> > >> (drivers/hv/hyperv_vmbus.h in linux >>> >> > >>> >>> >> kernel >>> >> > >>> >>> >> > >> source code). When running in SE mode, we are trying >>> >> > >>> >>> >> > >> to bring the >>> >> > >>> >>> >> machine >>> >> > >>> >>> >> > >> state to full 64bit mode without going through >>> >> > >>> >>> >> > >> legacy >>> >> > modes. >>> >> > >>> >>> >> > >> It >>> >> > >>> >>> >> might be >>> >> > >>> >>> >> > >> that Intel machines have a different way of going to >>> >> > >>> >>> >> > >> 64bit mode than >>> >> > >>> >>> >> AMD >>> >> > >>> >>> >> > >> machines (different CR4, different way of enabling >>> >> > >>> >>> >> > >> 64bit mode page >>> >> > >>> >>> >> tables >>> >> > >>> >>> >> > >> etc.). I remember dealing with these issue for AMD >>> >> > >>> >>> >> > >> platforms by going through System Programming manual >>> >> > >>> >>> >> > >> and making sure >>> >> > >>> >>> >> > >> gem5 gets all the >>> >> > >>> >>> >> bits >>> >> > >>> >>> >> > >> right as there is not much the KVM kernel model will >>> >> > >>> >>> >> > >> tell about the >>> >> > >>> >>> >> cause >>> >> > >>> >>> >> > >> of failure. >>> >> > >>> >>> >> > >> >>> >> > >>> >>> >> > >> Best regards, >>> >> > >>> >>> >> > >> Alex >>> >> > >>> >>> >> > >> ________________________________________ >>> >> > >>> >>> >> > >> From: gem5-dev [[email protected]] on >>> behalf >>> >> > >>> >>> >> > >> of Gabe Black >>> >> > >>> >>> >> via >>> >> > >>> >>> >> > >> gem5-dev [[email protected]] >>> >> > >>> >>> >> > >> Sent: Monday, December 08, 2014 7:08 PM >>> >> > >>> >>> >> > >> To: gem5 Developer List >>> >> > >>> >>> >> > >> Subject: Re: [gem5-dev] x86 SE kvm functionality >>> >> > >>> >>> >> > >> (AMD vs >>> >> > >>> >>> >> > >> Intel) >>> >> > >>> >>> >> > >> >>> >> > >>> >>> >> > >> I'm not an expert either, but I did have problems >>> >> > >>> >>> >> > >> running KVM in SE >>> >> > >>> >>> >> mode on >>> >> > >>> >>> >> > >> an Intel CPU. I didn't look into it that much, but I >>> >> > >>> >>> >> > >> think things >>> >> > >>> >>> >> failed in >>> >> > >>> >>> >> > >> the kernel somewhere. What might be happening is >>> >> > >>> >>> >> > >> that the different >>> >> > >>> >>> >> vendors >>> >> > >>> >>> >> > >> hardware virtualization mechanisms are more or less >>> >> > >>> >>> >> > >> picky about >>> >> > >>> >>> >> various >>> >> > >>> >>> >> > >> things. Something might be set up incorrectly, and >>> >> > >>> >>> >> > >> one >>> >> > >>> >>> >> implementation gets >>> >> > >>> >>> >> > >> more upset about it than the other. I believe there >>> >> > >>> >>> >> > >> are tools which >>> >> > >>> >>> >> will >>> >> > >>> >>> >> > >> help you determine whether your VM state is legal. >>> >> > >>> >>> >> > >> Perhaps Andreas >>> >> > >>> >>> >> can tell >>> >> > >>> >>> >> > >> you more about those? >>> >> > >>> >>> >> > >> >>> >> > >>> >>> >> > >> Gabe >>> >> > >>> >>> >> > >> >>> >> > >>> >>> >> > >> On Mon, Dec 8, 2014 at 4:29 PM, mike upton via >>> >> > >>> >>> >> > >> gem5-dev < >>> >> > >>> >>> >> [email protected] >>> >> > >>> >>> >> > >>> >>> >> > >>> >>> >> > >> wrote: >>> >> > >>> >>> >> > >> >>> >> > >>> >>> >> > >>> I have verified that x86 kvm works fine on AMD >>> >> > >>> >>> >> > >>> platforms, but fails >>> >> > >>> >>> >> on >>> >> > >>> >>> >> > >>> Intel platforms. >>> >> > >>> >>> >> > >>> >>> >> > >>> >>> >> > >>> Any hints about how to narrow down the cause (other >>> >> > >>> >>> >> > >>> than diving >>> >> > >>> >>> >> into gdb, >>> >> > >>> >>> >> > >>> which I will do). >>> >> > >>> >>> >> > >>> >>> >> > >>> >>> >> > >>> I am not an expert in KVM or how gem5 hooks up to >>> >> libkvm. >>> >> > >>> >>> >> > >>> _______________________________________________ >>> >> > >>> >>> >> > >>> gem5-dev mailing list [email protected] >>> >> > >>> >>> >> > >>> http://m5sim.org/mailman/listinfo/gem5-dev >>> >> > >>> >>> >> > >>> >>> >> > >>> >>> >> > >> _______________________________________________ >>> >> > >>> >>> >> > >> gem5-dev mailing list [email protected] >>> >> > >>> >>> >> > >> http://m5sim.org/mailman/listinfo/gem5-dev >>> >> > >>> >>> >> > >> _______________________________________________ >>> >> > >>> >>> >> > >> gem5-dev mailing list [email protected] >>> >> > >>> >>> >> > >> http://m5sim.org/mailman/listinfo/gem5-dev >>> >> > >>> >>> >> > >> >>> >> > >>> >>> >> > > _______________________________________________ >>> >> > >>> >>> >> > > gem5-dev mailing list [email protected] >>> >> > >>> >>> >> > > http://m5sim.org/mailman/listinfo/gem5-dev >>> >> > >>> >>> >> > > >>> >> > >>> >>> >> > _______________________________________________ >>> >> > >>> >>> >> > gem5-dev mailing list >>> >> > >>> >>> >> > [email protected] >>> >> > >>> >>> >> > http://m5sim.org/mailman/listinfo/gem5-dev >>> >> > >>> >>> >> >>> >> > >>> >>> >> >>> >> > >>> >>> >> _______________________________________________ >>> >> > >>> >>> >> gem5-dev mailing list >>> >> > >>> >>> >> [email protected] >>> >> > >>> >>> >> http://m5sim.org/mailman/listinfo/gem5-dev >>> >> > >>> >>> >> _______________________________________________ >>> >> > >>> >>> >> gem5-dev mailing list >>> >> > >>> >>> >> [email protected] >>> >> > >>> >>> >> http://m5sim.org/mailman/listinfo/gem5-dev >>> >> > >>> >>> >> >>> >> > >>> >>> > >>> >> > >>> >>> > >>> >> > >>> >>> _______________________________________________ >>> >> > >>> >>> gem5-dev mailing list >>> >> > >>> >>> [email protected] >>> >> > >>> >>> http://m5sim.org/mailman/listinfo/gem5-dev >>> >> > >>> >>> _______________________________________________ >>> >> > >>> >>> gem5-dev mailing list >>> >> > >>> >>> [email protected] >>> >> > >>> >>> http://m5sim.org/mailman/listinfo/gem5-dev >>> >> > >>> >>> >>> >> > >>> >> >>> >> > >>> >> >>> >> > >>> > >>> >> > >>> _______________________________________________ >>> >> > >>> gem5-dev mailing list >>> >> > >>> [email protected] >>> >> > >>> http://m5sim.org/mailman/listinfo/gem5-dev >>> >> > >>> _______________________________________________ >>> >> > >>> gem5-dev mailing list >>> >> > >>> [email protected] >>> >> > >>> http://m5sim.org/mailman/listinfo/gem5-dev >>> >> > >>> >>> >> > >> >>> >> > >> >>> >> > > >>> >> > _______________________________________________ >>> >> > gem5-dev mailing list >>> >> > [email protected] >>> >> > http://m5sim.org/mailman/listinfo/gem5-dev >>> >> > _______________________________________________ >>> >> > gem5-dev mailing list >>> >> > [email protected] >>> >> > http://m5sim.org/mailman/listinfo/gem5-dev >>> >> > >>> >> _______________________________________________ >>> >> gem5-dev mailing list >>> >> [email protected] >>> >> http://m5sim.org/mailman/listinfo/gem5-dev >>> >> >>> >_______________________________________________ >>> >gem5-dev mailing list >>> >[email protected] >>> >http://m5sim.org/mailman/listinfo/gem5-dev >>> >_______________________________________________ >>> >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. 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