From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sander Eikelenboom Subject: Re: IOMMU and AMD 890fx Date: Thu, 3 Jun 2010 10:19:30 +0200 Message-ID: <571239012.20100603101930@eikelenboom.it> References: <3399D2269986104B959D31B7E919313C06E2BD8E@SAUSEXMBP01.amd.com> <4410545273.20100510083852@eikelenboom.it> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: quoted-printable Return-path: In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Sender: xen-devel-bounces@lists.xensource.com Errors-To: xen-devel-bounces@lists.xensource.com To: Leonardo Prosperi Cc: "Huang2, Wei" , "xen-devel@lists.xensource.com" List-Id: xen-devel@lists.xenproject.org Thx for the forum threads, i have changed the wiki about vt-d/iommu to refl= ect these new experiences. I was hoping AMD would be able to do a better job than Intel, and have lear= ned from the BIOS missery Intel has with there VT-d, and instruct/help the = manafacturers getting their bioses right. It's a pity that a nice feature isn't supported. No sense in upgrading my s= etup 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 X= en. > On Sun, May 9, 2010 at 11:38 PM, Sander Eikelenboom wrote: >> Hello Wei, >> >> I hope motherboard manufacturers do a better job with supporting this io= mmu >> in the bios than they did with intel's. Especially Asus made a mess of i= t, >> 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@lists.xensource.com [mailto: >> xen-devel-bounces@lists.xensource.com] On Behalf Of Leonardo Prosperi >> > Sent: Sunday, May 09, 2010 1:02 PM >> > To: xen-devel@lists.xensource.com >> > Subject: [Xen-devel] IOMMU and AMD 890fx >> >> >> > Hi, >> > All the reviews for the AMD 890fx chipset reported that it supports IO= MMU >> 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@eikelenboom.it >> >> --=20 Best regards, Sander mailto:linux@eikelenboom.it