A question that I think I probably know the answer to, but I want to verify. Do PCI Passthrough to HVM domUs require VTd or IOMMU? From what I''ve read in various places around the Internet, the answer is yes, but it''s never been explicitly stated. I have a multi-port PCI serial card on a non-VTd-capable machine that I want to passthrough to a Windows domU. PCI passthrough would be the easiest option, except for the lack of VTd. I tried doing something with the IRQ and IOPORTS to pass it through, but I ended up with a device type "Xen Ioports" in my Windows domU and couldn''t really get the correct driver installed. Any hints would be appreciated - even if it''s to say, "Sorry, you''re out of luck - go buy a machine with VTd." Thanks! -Nick -------- This e-mail may contain confidential and privileged material for the sole use of the intended recipient. If this email is not intended for you, or you are not responsible for the delivery of this message to the intended recipient, please note that this message may contain SEAKR Engineering (SEAKR) Privileged/Proprietary Information. In such a case, you are strictly prohibited from downloading, photocopying, distributing or otherwise using this message, its contents or attachments in any way. If you have received this message in error, please notify us immediately by replying to this e-mail and delete the message from your mailbox. Information contained in this message that does not relate to the business of SEAKR is neither endorsed by nor attributable to SEAKR. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
You''re likely to get the "sorry, you''re out of luck" response, but IIRC, PCI Passthrough can be used with one type of domU without VT-d/iommu. This may require custom compilation or something, though, as it poses a security risk. The answer should be hidden deep within the archives of this mailing list. Dustin From: xen-users-bounces@lists.xensource.com [mailto:xen-users-bounces@lists.xensource.com] On Behalf Of Nick Couchman Sent: Wednesday, September 30, 2009 11:01 To: XEN Mailing List Subject: [Xen-users] PCI Passthrough A question that I think I probably know the answer to, but I want to verify. Do PCI Passthrough to HVM domUs require VTd or IOMMU? From what I''ve read in various places around the Internet, the answer is yes, but it''s never been explicitly stated. I have a multi-port PCI serial card on a non-VTd-capable machine that I want to passthrough to a Windows domU. PCI passthrough would be the easiest option, except for the lack of VTd. I tried doing something with the IRQ and IOPORTS to pass it through, but I ended up with a device type "Xen Ioports" in my Windows domU and couldn''t really get the correct driver installed. Any hints would be appreciated - even if it''s to say, "Sorry, you''re out of luck - go buy a machine with VTd." Thanks! -Nick ________________________________________ <br><hr> This e-mail may contain confidential and privileged material for the sole use of the intended recipient. If this email is not intended for you, or you are not responsible for the delivery of this message to the intended recipient, please note that this message may contain SEAKR Engineering (SEAKR) Privileged/Proprietary Information. In such a case, you are strictly prohibited from downloading, photocopying, distributing or otherwise using this message, its contents or attachments in any way. If you have received this message in error, please notify us immediately by replying to this e-mail and delete the message from your mailbox. Information contained in this message that does not relate to the business of SEAKR is neither endorsed by nor attributable to SEAKR. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
>>> On 2009/09/30 at 09:07, "Dustin Henning" <Dustin.Henning@prd-inc.com> wrote:You''re likely to get the "sorry, you''re out of luck" response, but IIRC, PCI Passthrough can be used with one type of domU without VT-d/iommu. This may require custom compilation or something, though, as it poses a security risk. The answer should be hidden deep within the archives of this mailing list. Dustin From: xen-users-bounces@lists.xensource.com [mailto:xen-users-bounces@lists.xensource.com] On Behalf Of Nick Couchman Sent: Wednesday, September 30, 2009 11:01 To: XEN Mailing List Subject: [Xen-users] PCI Passthrough A question that I think I probably know the answer to, but I want to verify. Do PCI Passthrough to HVM domUs require VTd or IOMMU? From what I''ve read in various places around the Internet, the answer is yes, but it''s never been explicitly stated. I have a multi-port PCI serial card on a non-VTd-capable machine that I want to passthrough to a Windows domU. PCI passthrough would be the easiest option, except for the lack of VTd. I tried doing something with the IRQ and IOPORTS to pass it through, but I ended up with a device type "Xen Ioports" in my Windows domU and couldn''t really get the correct driver installed. Any hints would be appreciated - even if it''s to say, "Sorry, you''re out of luck - go buy a machine with VTd." Thanks! -Nick Thanks, Dustin...I''ll do some more searching and see what I can come up with. -Nick -------- This e-mail may contain confidential and privileged material for the sole use of the intended recipient. If this email is not intended for you, or you are not responsible for the delivery of this message to the intended recipient, please note that this message may contain SEAKR Engineering (SEAKR) Privileged/Proprietary Information. In such a case, you are strictly prohibited from downloading, photocopying, distributing or otherwise using this message, its contents or attachments in any way. If you have received this message in error, please notify us immediately by replying to this e-mail and delete the message from your mailbox. Information contained in this message that does not relate to the business of SEAKR is neither endorsed by nor attributable to SEAKR. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Hi Nick, I can recommend using a serial server (for instance from http://www.sena.com) as a much easier and more flexible approach... best, Jan Nick Couchman wrote:> > >>> On 2009/09/30 at 09:07, "Dustin Henning" > <Dustin.Henning@prd-inc.com> wrote: > > You''re likely to get the "sorry, you''re out of luck" response, but > IIRC, PCI Passthrough can be used with one type of domU without > VT-d/iommu. > This may require custom compilation or something, though, as it poses a > security risk. The answer should be hidden deep within the archives > of this > mailing list. > Dustin > > From: xen-users-bounces@lists.xensource.com > [mailto:xen-users-bounces@lists.xensource.com] On Behalf Of Nick Couchman > Sent: Wednesday, September 30, 2009 11:01 > To: XEN Mailing List > Subject: [Xen-users] PCI Passthrough > > A question that I think I probably know the answer to, but I want to > verify. > Do PCI Passthrough to HVM domUs require VTd or IOMMU? From what I''ve read > in various places around the Internet, the answer is yes, but it''s never > been explicitly stated. I have a multi-port PCI serial card on a > non-VTd-capable machine that I want to passthrough to a Windows domU. PCI > passthrough would be the easiest option, except for the lack of VTd. I > tried doing something with the IRQ and IOPORTS to pass it through, but I > ended up with a device type "Xen Ioports" in my Windows domU and couldn''t > really get the correct driver installed. Any hints would be appreciated - > even if it''s to say, "Sorry, you''re out of luck - go buy a machine with > VTd." > > Thanks! > -Nick > > > > Thanks, Dustin...I''ll do some more searching and see what I can come > up with. > > > -Nick > > ------------------------------------------------------------------------ > <br><hr> > This e-mail may contain confidential and privileged material for the > sole use of the intended recipient. If this email is not intended for > you, or you are not responsible for the delivery of this message to > the intended recipient, please note that this message may contain > SEAKR Engineering (SEAKR) Privileged/Proprietary Information. In such > a case, you are strictly prohibited from downloading, photocopying, > distributing or otherwise using this message, its contents or > attachments in any way. If you have received this message in error, > please notify us immediately by replying to this e-mail and delete the > message from your mailbox. Information contained in this message that > does not relate to the business of SEAKR is neither endorsed by nor > attributable to SEAKR. > ------------------------------------------------------------------------ > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-users_______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
>>> On 2009/09/30 at 14:56, Jan Bakuwel <jan.bakuwel@gmail.com> wrote:Hi Nick, I can recommend using a serial server (for instance from http://www.sena.com) as a much easier and more flexible approach... best, Jan Nick Couchman wrote:> > >>> On 2009/09/30 at 09:07, "Dustin Henning" > <Dustin.Henning@prd-inc.com> wrote: > > You''re likely to get the "sorry, you''re out of luck" response, but > IIRC, PCI Passthrough can be used with one type of domU without > VT-d/iommu. > This may require custom compilation or something, though, as it poses a > security risk. The answer should be hidden deep within the archives > of this > mailing list. > Dustin > > From: xen-users-bounces@lists.xensource.com > [mailto:xen-users-bounces@lists.xensource.com] On Behalf Of Nick Couchman > Sent: Wednesday, September 30, 2009 11:01 > To: XEN Mailing List > Subject: [Xen-users] PCI Passthrough > > A question that I think I probably know the answer to, but I want to > verify. > Do PCI Passthrough to HVM domUs require VTd or IOMMU? From what I''ve read > in various places around the Internet, the answer is yes, but it''s never > been explicitly stated. I have a multi-port PCI serial card on a > non-VTd-capable machine that I want to passthrough to a Windows domU. PCI > passthrough would be the easiest option, except for the lack of VTd. I > tried doing something with the IRQ and IOPORTS to pass it through, but I > ended up with a device type "Xen Ioports" in my Windows domU and couldn''t > really get the correct driver installed. Any hints would be appreciated - > even if it''s to say, "Sorry, you''re out of luck - go buy a machine with > VTd." > > Thanks! > -Nick > > > > Thanks, Dustin...I''ll do some more searching and see what I can come > up with. > > > -Nick > > ------------------------------------------------------------------------ > <br><hr> > This e-mail may contain confidential and privileged material for the > sole use of the intended recipient. If this email is not intended for > you, or you are not responsible for the delivery of this message to > the intended recipient, please note that this message may contain > SEAKR Engineering (SEAKR) Privileged/Proprietary Information. In such > a case, you are strictly prohibited from downloading, photocopying, > distributing or otherwise using this message, its contents or > attachments in any way. If you have received this message in error, > please notify us immediately by replying to this e-mail and delete the > message from your mailbox. Information contained in this message that > does not relate to the business of SEAKR is neither endorsed by nor > attributable to SEAKR. > ------------------------------------------------------------------------ > > _______________________________________________ > Xen-users mailing list > Xen-users@lists.xensource.com > http://lists.xensource.com/xen-usersThanks, Jan Unfortunately the end user wants the "direct-connected" serial ports available as a backup in case the network fails - using a network-based serial server to protect against network failure isn''t probably going to work for me. We already use quite a few of Digi''s serial port servers around here, so we''re familiar with the concept, just have to use something else in this case. -Nick -------- This e-mail may contain confidential and privileged material for the sole use of the intended recipient. If this email is not intended for you, or you are not responsible for the delivery of this message to the intended recipient, please note that this message may contain SEAKR Engineering (SEAKR) Privileged/Proprietary Information. In such a case, you are strictly prohibited from downloading, photocopying, distributing or otherwise using this message, its contents or attachments in any way. If you have received this message in error, please notify us immediately by replying to this e-mail and delete the message from your mailbox. Information contained in this message that does not relate to the business of SEAKR is neither endorsed by nor attributable to SEAKR. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
Nick Couchman wrote:> A question that I think I probably know the answer to, but I want to > verify. Do PCI Passthrough to HVM domUs require VTd or IOMMU? From > what I''ve read in various places around the Internet, the answer is yes, > but it''s never been explicitly stated. I have a multi-port PCI serial > card on a non-VTd-capable machine that I want to passthrough to a > Windows domU. PCI passthrough would be the easiest option, except for > the lack of VTd. I tried doing something with the IRQ and IOPORTS to > pass it through, but I ended up with a device type "Xen Ioports" in my > Windows domU and couldn''t really get the correct driver installed. Any > hints would be appreciated - even if it''s to say, "Sorry, you''re out of > luck - go buy a machine with VTd." > > > Thanks! > > -NickPCI passthrough to HVM domU requires VT-d. BUT there are experimental patches to passthrough devices to the FIRST HVM domU, i.e. here: http://permalink.gmane.org/gmane.comp.emulators.xen.devel/70672 However this is completely untested and will not just apply and work out of the box. Due to its nature its very unlikely that passthrough to HVM without VT-d will ever make it into Xen at all. So if you''re looking for a real solution rather than a quick hack, then I can only tell you "Sorry, you''re out of luck - go buy a machine with VTd." ;-) I just updated the Wiki today with some boards and chipsets known to work (or having problems), have a look here: http://wiki.xensource.com/xenwiki/VTdHowTo Best regards, Christian _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users