Date: Mon, 2 Apr 2018 14:35:39 +0100 From: Roger Pau =?utf-8?B?TW9ubsOp?= <roger.pau@citrix.com> To: "Rodney W. Grimes" <freebsd-rwg@pdx.rh.CN85.dnsmgr.net> Cc: Chris <syseng@gfsys.co.uk>, <freebsd-xen@freebsd.org> Subject: Re: [Bug 224003] xen kernel panics Message-ID: <20180402133539.4x2wvuz4tia3nukp@MacBook-Pro-de-Roger.local> In-Reply-To: <201804010238.w312cSHg075773@pdx.rh.CN85.dnsmgr.net> References: <5ABFD26B.8030601@gfsys.co.uk> <201804010238.w312cSHg075773@pdx.rh.CN85.dnsmgr.net>
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On Sat, Mar 31, 2018 at 07:38:28PM -0700, Rodney W. Grimes wrote: > > On 03/31/18 18:11, Chris wrote: > > > On 03/30/18 18:05, Rodney W. Grimes wrote: > > > > > >> I can affirm that a E56xx cpu should be very capable of supporting Xen. > > >> CPU: Intel(R) Xeon(R) CPU X5675 @ 3.07GHz (3059.07-MHz K8-class CPU) > > >> Origin="GenuineIntel" Id=0x206c2 Family=0x6 Model=0x2c Stepping=2 > > >> Features=0xbfebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,HTT,TM,PBE> > > >> > > >> Features2=0x29ee3ff<SSE3,PCLMULQDQ,DTES64,MON,DS_CPL,VMX,SMX,EST,TM2,SSSE3,CX16,xTPR,PDCM,PCID,DCA,SSE4.1,SSE4.2,POPCNT,AESNI> > > >> > > >> AMD Features=0x2c100800<SYSCALL,NX,Page1GB,RDTSCP,LM> > > >> AMD Features2=0x1<LAHF> > > >> VT-x: PAT,HLT,MTF,PAUSE,EPT,UG,VPID > > >> TSC: P-state invariant, performance statistics > > >> > > > > Looks like this might be the problem:- > > > > > (XEN) [VT-D]Disabling IOMMU due to Intel 5500/5520/X58 Chipset errata > > > #47, #53 > > > > Been in a rush today, but should have looked at that a bit more closely > > before posting, as istr, saw that mentioned as a bug eleswhere back > > from 2015 or so.... > > https://support.citrix.com/article/CTX136517 > > That has some info on how to work around this issue. You can turn > of the interrupt remapping and still have an iommu, though it is > not going be very effective for passthrough of devices. Just add iommu=no-intremap to your xen_cmdline in loader.conf. Roger.
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