Date: Tue, 14 Nov 2017 14:10:41 +0200 From: Andriy Gapon <avg@FreeBSD.org> To: Anish <akgupt3@gmail.com> Cc: "freebsd-virtualization@freebsd.org" <freebsd-virtualization@freebsd.org> Subject: Re: problem with pass-through on amd Message-ID: <a56f42f4-3868-04d9-3d77-6cfecd29909c@FreeBSD.org> In-Reply-To: <CALnRwMTq7pD0SBj3D0MRp7mxQ9nK5d1vk_XLA8uCnaYchCf18A@mail.gmail.com> References: <cee09b94-3a1d-ac36-c99a-99196faa75a9@FreeBSD.org> <CALnRwMShTha5aKfY6EbB=n2JiiK1z_Y--39WoWGgbUUufafnmw@mail.gmail.com> <e26820b8-048b-9684-f810-2cba364d0474@FreeBSD.org> <CALnRwMTq7pD0SBj3D0MRp7mxQ9nK5d1vk_XLA8uCnaYchCf18A@mail.gmail.com>
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On 14/11/2017 06:22, Anish wrote: > Hi Andriy, > Newer AMD IOMMU has EFR capability which is missing here, something like: > ivhd0: PCI cap 0x190b640f@0x40 feature:19<IOTLB,EFR> > > Is this an old chipset? Yes, this is an old 900 series chipset (990X). > Also ivhd has fault interrupt enabled which is very > helpful in debugging: > > [root@ryzen /home/anish/FreeBSD/head]# vmstat -ia |grep ivh > irq256: ivhd0:fault 0 0 > irq257: ivhd1:fault 0 0 irq256: ivhd0:fault 0 0 > Another thing to worth checking is PCI config space of ivhd/IOMMU if you have not already done so. For what should I look there? -- Andriy Gapon
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