Re: [Xen-users] VGA PASSTHROUGH not working :(

[Jason Long <hack3rcon@xxxxxxxxx>]

I enabled "iommu=1" as you see but problem not solved :(

menuentry 'Fedora, with Xen hypervisor' --class fedora --class gnu-linux --class gnu --class os --class xen $menuentry_id_option 'xen-gnulinux-simple-5a537009-00b1-4f8c-a547-26d$

        insmod part_msdos

        insmod lvm

        insmod ext2

        set root='lvmid/3p7jxo-Dwtm-NABs-2s0k-pL7d-8j86-Lo3aFr/YUlEaE-gsRR-1slu-Z70H-QWiX-saVL-s7gWsZ'

        if [ x$feature_platform_search_hint = xy ]; then

          search --no-floppy --fs-uuid --set=root --hint='lvmid/3p7jxo-Dwtm-NABs-2s0k-pL7d-8j86-Lo3aFr/YUlEaE-gsRR-1slu-Z70H-QWiX-saVL-s7gWsZ'  5a537009-00b1-4f8c-a547-26dd00707$

        else

          search --no-floppy --fs-uuid --set=root 5a537009-00b1-4f8c-a547-26dd00707ee9

        fi

        echo    'Loading Xen 4.5.3 ...'

        if [ "$grub_platform" = "pc" -o "$grub_platform" = "" ]; then

            xen_rm_opts=

        else

            xen_rm_opts="no-real-mode edd=off"

        fi

        multiboot       /boot/xen-4.5.3.gz placeholder iommu=1   ${xen_rm_opts}

        echo    'Loading Linux 4.4.7-300.fc23.x86_64 ...'

        module  /boot/vmlinuz-4.4.7-300.fc23.x86_64 placeholder root=/dev/mapper/fedora-root00 ro rd.lvm.lv=fedora/root00 rd.lvm.lv=fedora/swap rhgb quiet

        echo    'Loading initial ramdisk ...'

        module  --nounzip   /boot/initramfs-4.4.7-300.fc23.x86_64.img

On Monday, May 16, 2016 9:53 AM, Jason Long <hack3rcon@xxxxxxxxx> wrote:

Why VGA Passthrough is hard in Xen? My VGA is Nvidia GT 210 and my CPU is Core i7 and I guess not it is a regular PC.

On Sunday, May 15, 2016 5:43 PM, Ray <ray@xxxxxxxxx> wrote:

> Message: 6
> Date: Sun, 15 May 2016 06:10:47 +0000 (UTC)
> From: Jason Long <hack3rcon@xxxxxxxxx>
> To: "sm8ax1@xxxxxxxxxxx" <sm8ax1@xxxxxxxxxxx>,
> "xen-users@xxxxxxxxxxxxx" <xen-users@xxxxxxxxxxxxx>
> Subject: Re: [Xen-users] VGA PASSTHROUGH not working :(
> Message-ID:
> <189714217.2269584.1463292648007.JavaMail.yahoo@xxxxxxxxxxxxxx>
> Content-Type: text/plain; charset="utf-8"
>
> It is so odd. My CPU is "http://ark.intel.com/products/52214/Intel-Core-i7-2600K-Processor-8M-Cache-up-to-3_80-GHz" and information are :
> # cat /proc/cpuinfo processor : 0vendor_id : GenuineIntelcpu family : 6model : 42model name : Intel(R) Core(TM) i7-2600K CPU @ 3.40GHzstepping : 7microcode : 0x17cpu MHz : 3392.390cache size : 8192 KBphysical id : 0siblings : 8core id : 0cpu cores : 4apicid : 0initial apicid : 0fpu : yesfpu_exception : yescpuid level : 13wp : yesflags : fpu de tsc msr pae mce cx8 apic sep mca cmov pat clflush acpi mmx fxsr sse sse2 ss ht syscall nx lm constant_tsc rep_good nopl nonstop_tsc eagerfpu pni pclmulqdq monitor est ssse3 cx16 sse4_1 sse4_2 popcnt tsc_deadline_timer aes xsave avx hypervisor lahf_lm ida arat epb pln pts dtherm xsaveoptbugs :bogomips : 6784.78clflush size : 64cache_alignment : 64address sizes : 36 bits physical, 48 bits virtualpower management:
> 
On my Toshiba laptop, cat cpuinfo shows vmx (the Intel VT-d flag) when I boot to Debian.  When I boot to Xen, it does not show-up.  This is a new install and I have not built a VM yet so I cannot say if there is a problem.
 
Ray

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