W dniu 21.09.2015 o 04:51, Xiao Guangrong pisze: > > Thanks for your report and analysis, Janusz! > > On 09/19/2015 01:48 AM, Janusz wrote: >> W dniu 18.09.2015 o 12:07, Laszlo Ersek pisze: >>> On 09/18/15 11:37, Janusz wrote: >>>> Hello, >>>> >>>> I am writting about this patch that was posted by Xiao: >>>> http://www.spinics.net/lists/kvm/msg119044.html and this: >>>> http://www.spinics.net/lists/kvm/msg119045.html >>>> I've tested both kernel 4.2 and 4.3 and problem still exists when I >>>> use >>>> OVMF - 100% cpu usage, VM resetting, while it works properly on >>>> kernel 4.1 >>> My last (still current) request remains "please quirk it". See the end >>> of <http://thread.gmane.org/gmane.linux.kernel/1952205/focus=1996025>, >>> and other messages in that subthread. >> when I saw message from Xiao that he posted patch for it and have seen >> this code in kernel sources (landed in 4.2-rc3) I though that the status >> is not "please quirk it" anymore >>> >>> I haven't been following kernel development, so maybe the quirk has not >>> happened. No clue. >>> >>> ... "VM resetting" looks something different though; I've been under >>> the >>> impression that the pedantic (=unquirked) MTRR configuration didn't >>> impact other things than speed. Janusz, maybe you could contribute with >>> a host kernel bisection for the VM reset symptom. >> To be more exact - VM is mostly not starting or its starting after long >> time and then resetting it self at random time (but before system boots) >> or gets very high cpu usage or sometimes boots without problem (the >> least possible case scenario). When I start VM with -vga std, not with >> my gpu passthrough - in most of the time I get this: >> http://pastebin.com/raw.php?i=CKrNsueS > > It seems the behaviour is different with previous (previously, it can > boot > but slowly), right? > > The URL cat not be accessed, i do not know it's your web server issue or > our networking issue. > >> >> Result of bisect: >> >> git bisect start >> # bad: [d770e558e21961ad6cfdf0ff7df0eb5d7d4f0754] Linux 4.2-rc1 >> git bisect bad d770e558e21961ad6cfdf0ff7df0eb5d7d4f0754 >> # good: [b953c0d234bc72e8489d3bf51a276c5c4ec85345] Linux 4.1 >> git bisect good b953c0d234bc72e8489d3bf51a276c5c4ec85345 >> # good: [4570a37169d4b44d316f40b2ccc681dc93fedc7b] Merge tag >> 'sound-4.2-rc1' of >> git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound >> git bisect good 4570a37169d4b44d316f40b2ccc681dc93fedc7b >> # good: [8d7804a2f03dbd34940fcb426450c730adf29dae] Merge tag >> 'driver-core-4.2-rc1' of >> git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core >> git bisect good 8d7804a2f03dbd34940fcb426450c730adf29dae >> # bad: [78c10e556ed904d5bfbd71e9cadd8ce8f25d6982] Merge branch >> 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus >> git bisect bad 78c10e556ed904d5bfbd71e9cadd8ce8f25d6982 >> # good: [623f0e137c0fedb81bbf3d88be4ed300eee163da] Staging: lustre: fix >> space before and after comma in dt_object.c >> git bisect good 623f0e137c0fedb81bbf3d88be4ed300eee163da >> # bad: [8c7febe83915332276cab49e89f6580bb963fb9a] Merge tag >> 'tty-4.2-rc1' of >> git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/tty >> git bisect bad 8c7febe83915332276cab49e89f6580bb963fb9a >> # good: [bcf5b92d9bbf0b7683199615f0f184e89fa486bc] staging: rtl8192e: >> Remove rt_hi_throughput::ChnkOp >> git bisect good bcf5b92d9bbf0b7683199615f0f184e89fa486bc >> # good: [71eec4836b834b992e0cefeefc8b85efe4cb185b] drivers: PL011: allow >> avoiding UART enabling/disabling >> git bisect good 71eec4836b834b992e0cefeefc8b85efe4cb185b >> # good: [49ef9c850154756cf2fbc50fd3804c44675d4633] staging: comedi: >> me4000: rename 'thisboard' variables >> git bisect good 49ef9c850154756cf2fbc50fd3804c44675d4633 >> # good: [2a4462418af771ef9f1f1d1532bcbb8799df842d] tty/serial: kill off >> set_irq_flags usage >> git bisect good 2a4462418af771ef9f1f1d1532bcbb8799df842d >> # good: [6d43b0f482561ab421a91ebf59a51192d66cf8a7] Staging: sm750fb: >> ddk750_swi2c.c: Insert spaces around operators >> git bisect good 6d43b0f482561ab421a91ebf59a51192d66cf8a7 >> # good: [84e1eb83d0b9e0969a59b6848d718eaf71e98fcb] MAINTAINERS: tty: add >> serial docs directory >> git bisect good 84e1eb83d0b9e0969a59b6848d718eaf71e98fcb >> # good: [53a20e9e378ecd52f0afa4b60f8f8c81b6f97c27] staging: wilc1000: >> disable driver due to build warnings >> git bisect good 53a20e9e378ecd52f0afa4b60f8f8c81b6f97c27 >> # good: [71206b9f8120eb513c621d4f31906577bb658df3] Doc: >> serial-rs485.txt: update RS485 driver interface >> git bisect good 71206b9f8120eb513c621d4f31906577bb658df3 >> # bad: [23908db413eccd77084b09c9b0a4451dfb0524c0] Merge tag >> 'staging-4.2-rc1' of >> git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging >> git bisect bad 23908db413eccd77084b09c9b0a4451dfb0524c0 >> # first bad commit: [23908db413eccd77084b09c9b0a4451dfb0524c0] Merge tag >> 'staging-4.2-rc1' of >> git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging >> > > The bad commit is: > commit 23908db413eccd77084b09c9b0a4451dfb0524c0 > Merge: 8d7804a 53a20e9 > Author: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> > Date: Fri Jun 26 15:46:08 2015 -0700 > > Hard to find which one causes the real issue... but i will try to > reproduce > it, could you please share your command line? OPTS="-vga none" OPTS="$OPTS -drive if=pflash,format=raw,readonly,file=/home/janusz/uefi/OVMF_CODE.fd" OPTS="$OPTS -drive if=pflash,format=raw,file=/home/janusz/uefi/OVMF_VARS.fd" OPTS="$OPTS -enable-kvm -m 10000 -cpu host -smp 8,cores=4,threads=2,sockets=1" OPTS="$OPTS -device vfio-pci,host=01:00.0,romfile=/home/janusz/uefi/uefi-vga.bin" OPTS="$OPTS -device vfio-pci,host=01:00.1" OPTS="$OPTS -net nic,macaddr=50:E5:49:57:74:E3 -net bridge,vlan=0" OPTS="$OPTS -soundhw hda" OPTS="$OPTS -boot d" OPTS="$OPTS -usb -usbdevice host:09da:000a -usbdevice host:1a2c:0c21" OPTS="$OPTS -hda /mnt/storage2/win10.img" QEMU_AUDIO_DRV=pa qemu-system-x86_64 $OPTS my cpu is i7 6700k commands for kernel: intel_iommu=on vfio_iommu_type1.allow_unsafe_interrupts=0 on 4.1 I had to use: i915.preliminary_hw_support=1 intel_iommu=on vfio_iommu_type1.allow_unsafe_interrupts=0 intel_iommu=igfx_off because otherwise I got kernel panic, but on versions of kernel that doesn't work, with igfx_off my iommu groups were empty and it didn't panic anymore without it -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
