|
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] IOMMU and AMD 890fx
So in principle they would like to support it , but they can't / don't know how. Very interested at AMD's answer then, unfortunately Wei Huang seems to be on vacation until June 7th. For what i understood in the past was that AMD's solution would not depend on cpu support (as intel's vt-d does). And with vga passthrough, iommu on the desktop looks like a good use of an iommu in my opinion. -- Sander Thursday, June 3, 2010, 12:51:23 PM, you wrote: > I got this answer from asrock support: > <answer> > So, I get more/final answer from Taiwan department: > For H/W part: > From chipset spec, RD890(890FX) did support IOMMU. > But IOMMU also need CPU to support. Till now, AMD has no plan to support > IOMMU on desktop CPU (AM3 socket). > It only support with server CPU. > For BIOS part: > AMD has removed IOMMU related registers. > So there is no chance to let IOMMU work on our 890FX board unless AMD can > provide such a process, and registers. > Best regards, > ASRock Support > </answer> > So they say it is AMD's fault. :-( > Regards, > Jens > On Thu, 3 Jun 2010 11:23:10 +0200, Sander Eikelenboom > <linux@xxxxxxxxxxxxxx> wrote: >> Thursday, June 3, 2010, 10:53:29 AM, you wrote: >> >>> The ASRock 890FX Deluxe3 doesn't support the IOMMU technology too. >>> http://forums.amd.com/forum/messageview.cfm?catid=383&threadid=134410 >> >>> I'm very disappointed that main board manufacturers don't enable all >>> features for the processor and main board. >> >> >>> On Thu, June 3, 2010 10:19 am, Sander Eikelenboom wrote: >>>> Thx for the forum threads, i have changed the wiki about vt-d/iommu to >>>> reflect these new experiences. >>>> >>>> I was hoping AMD would be able to do a better job than Intel, and have >>>> learned from the BIOS missery Intel has with there VT-d, and >>>> instruct/help >>>> the manafacturers getting their bioses right. >> >>> I have a feeling that it's not AMD but the main board manufacturers who >>> don't enable IOMMU in the BIOS. (It might be a hidden feature, for > people >>> who want to hack the BIOS at your own risk). >>> http://www.rebelshavenforum.com/sis-bin/ultimatebb.cgi >> >> Ofcourse you are right, but as chipset manufacturer I would be pretty >> pissed and contact them. >> Also I don't know how hard AMD and Intel make it to implement the > feature >> in the bios. Since most of the time it's or disabled or broken. >> On the other hand, they only support "microsoft windows" and that > doesn't >> do a lot with an IOMMU. So in essence it's an unsupported feature. >> >> It's too bad though, it seemed to be a very nice virtualization > platform, >> 6 cores, iommu, affordable ... >> >> Hmm guess i'm going to write every manufacturer if they supported, > and/or >> if there are plans to support it. >> Hopefully one will do it in the end ... >> >> -- >> Sander >> >>>> It's a pity that a nice feature isn't supported. No sense in upgrading >>>> my >>>> setup then to a six core and mobo with IOMMU. :( >>>> >>>> >>>> -- >>>> Sander >>>> >>>> >>>> >>>>> Gigabyte motherboards don't support IOMMU: >>>>> > http://forums.tweaktown.com/f69/ga-890fxa-ud5-iommu-bios-switch-39801/ >>>> >>>>> MSI boards have the same problems: >>>>> http://comments.gmane.org/gmane.comp.emulators.xen.user/58630 >>>> >>>>> ASUS Crosshair IV Formula has IOMMU, but I cannot find if it works > with >>>>> Xen. >>>> >>>> >>>> >>>> >>>>> On Sun, May 9, 2010 at 11:38 PM, Sander Eikelenboom >>>>> <linux@xxxxxxxxxxxxxx>wrote: >>>> >>>>>> Hello Wei, >>>>>> >>>>>> I hope motherboard manufacturers do a better job with supporting > this >>>>>> iommu >>>>>> in the bios than they did with intel's. Especially Asus made a mess > of >>>>>> it, >>>>>> and hasn't fixed it in newer bioses for multiple motherboards. >>>>>> And since all motherboard reviews don't mention nor test the iommu >>>>>> it's >>>>>> hard to know upfront if it's supported :-( >>>>>> >>>>>> -- >>>>>> >>>>>> Sander >>>>>> >>>>>> > Leonardo, >>>>>> >>>>>> > I can confirm that AMD 890FX supports IOMMU v1.22. It was briefly >>>>>> mentioned by external sites, such as >>>>>> http://techreport.com/articles.x/18825. It looks like Asus, Gigabyte >>>>>> and >>>>>> MSI will ship motherboards with 890FX chipset. Xen 4.0 fully > supports >>>>>> AMD >>>>>> IOMMU v1.2. Note that IOMMU needs support from BIOS (ACPI IVRS > table). >>>>>> Please pay a bit attention to this area. >>>>>> >>>>>> > -Wei >>>>>> >>>>>> > From: xen-devel-bounces@xxxxxxxxxxxxxxxxxxx [mailto: >>>>>> xen-devel-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Leonardo > Prosperi >>>>>> > Sent: Sunday, May 09, 2010 1:02 PM >>>>>> > To: xen-devel@xxxxxxxxxxxxxxxxxxx >>>>>> > Subject: [Xen-devel] IOMMU and AMD 890fx >>>>>> >>>>>> >>>>>> > Hi, >>>>>> > All the reviews for the AMD 890fx chipset reported that it > supports >>>>>> IOMMU >>>>>> v1.2. >>>>>> > But I cannot find any mention of that on AMD site. >>>>>> >>>>>> > Does 890fx support IOMMU? >>>>>> > Do 890fx motherboards with IOMMU exist? >>>>>> > Does Xen support 890fx? >>>>>> >>>>>> > Regards, >>>>>> > Leonardo >>>>>> >>>>>> >>>>>> >>>>>> >>>>>> -- >>>>>> Best regards, >>>>>> Sander mailto:linux@xxxxxxxxxxxxxx >>>>>> >>>>>> >>>> >>>> >>>> >>>> -- >>>> Best regards, >>>> Sander mailto:linux@xxxxxxxxxxxxxx >>>> >>>> >>>> _______________________________________________ >>>> Xen-devel mailing list >>>> Xen-devel@xxxxxxxxxxxxxxxxxxx >>>> http://lists.xensource.com/xen-devel >>>> -- Best regards, Sander mailto:linux@xxxxxxxxxxxxxx _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
|
 |
Lists.xenproject.org is hosted with RackSpace, monitoring our |