<html> <head> <meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> </head> <body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-family: Calibri, sans-serif;"> <div>To add, this works perfectly fine (only change from non-working command is memory is changed from 12288 to 4096):</div> <div><br> </div> <div> <p style="margin: 0px; font-size: 11px; font-family: Menlo;">/usr/bin/qemu-system-x86_64 -drive if=ide,file=/home/me/myimage.img --enable-kvm -m 4096 -smp 2,sockets=1,cores=1,threads=2 -device vfio-pci,host=03:10.0,id=hostdev0,bus=pci.0,addr=0x6 -nographic</p> </div> <div><br> </div> <span id="OLK_SRC_BODY_SECTION"> <div style="font-family:Calibri; font-size:11pt; text-align:left; color:black; BORDER-BOTTOM: medium none; BORDER-LEFT: medium none; PADDING-BOTTOM: 0in; PADDING-LEFT: 0in; PADDING-RIGHT: 0in; BORDER-TOP: #b5c4df 1pt solid; BORDER-RIGHT: medium none; PADDING-TOP: 3pt"> <span style="font-weight:bold">From: </span>Anjali Kulkarni <<a href="mailto:anjali@juniper.net">anjali@juniper.net</a>><br> <span style="font-weight:bold">Date: </span>Tuesday, December 13, 2016 at 2:58 PM<br> <span style="font-weight:bold">To: </span>"<a href="mailto:vfio-users@redhat.com">vfio-users@redhat.com</a>" <<a href="mailto:vfio-users@redhat.com">vfio-users@redhat.com</a>><br> <span style="font-weight:bold">Subject: </span>Problem with vfio-pci device type and memory > 10G (or 8G)<br> </div> <div><br> </div> <div> <div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; color: rgb(0, 0, 0); font-size: 14px; font-family: Calibri, sans-serif;"> <div>Hi,</div> <div><br> </div> <div>I am observing that with memory of 10G or 12G, with a vfio-pci device type, qemu hangs and system becomes slow and sluggish, and eventually you need to kill the hung qemu process which never returns.</div> <div>For eg.:</div> <div> <p style="margin: 0px; font-size: 11px; font-family: Menlo;">/usr/bin/qemu-system-x86_64 -drive if=ide,file=/home/me/myimage.img --enable-kvm -m 12288 -smp 2,sockets=1,cores=1,threads=2 -device vfio-pci,host=03:10.0,id=hostdev0,bus=pci.0,addr=0x6 –nographic</p> <p style="margin: 0px; font-size: 11px; font-family: Menlo;"><br> </p> <p style="margin: 0px; font-size: 11px; font-family: Menlo;">Whereas with 8G or less of memory, it works fine.</p> <p style="margin: 0px; font-size: 11px; font-family: Menlo;"><br> </p> <p style="margin: 0px; font-size: 11px; font-family: Menlo;">If I remove –device vfio-pci…, everything works fine.</p> <p style="margin: 0px; font-size: 11px; font-family: Menlo;">Any idea if someone has seen this issue or how to debug or what the problem could be? Looks like there is a memory limitation somewhere.</p> <p style="margin: 0px; font-size: 11px; font-family: Menlo;"><br> </p> <p style="margin: 0px; font-size: 11px; font-family: Menlo;">Anjali</p> <p style="margin: 0px; font-size: 11px; font-family: Menlo;"><br> </p> <p style="margin: 0px; font-size: 11px; font-family: Menlo;"><br> </p> </div> </div> </div> </span> </body> </html>