search for: irqbypass

...om> wrote: > We used to detect assigned device via VFIO manipulated device > conters. This is less flexible consider VFIO is not the only > interface for assigned device. vDPA devices has dedicated > backed hardware as well. So this patch tries to detect > the assigned device via irqbypass manager. > > We will increase/decrease the assigned device counter in kvm/x86. > Both vDPA and VFIO would go through this code path. > > This code path only affect x86 for now. No it doesn't, it only adds VFIO support to x86, but it removes it from architecture neutral code....

...0 19:23:45 +0800 Zhu Lingshan <lingshan.zhu at intel.com> wrote: > vDPA devices has dedicated backed hardware like > passthrough-ed devices. Then it is possible to setup irq > offloading to vCPU for vDPA devices. Thus this patch tries to > manipulated assigned device counters via irqbypass manager. > > We will increase/decrease the assigned device counter in kvm/x86. > Both vDPA and VFIO would go through this code path. > > This code path only affect x86 for now. > > Signed-off-by: Zhu Lingshan <lingshan.zhu at intel.com> > Suggested-by: Jason Wang &l...

On 2020/7/16 ??7:23, Zhu Lingshan wrote: > vDPA devices has dedicated backed hardware like > passthrough-ed devices. Then it is possible to setup irq > offloading to vCPU for vDPA devices. Thus this patch tries to > manipulated assigned device counters via irqbypass manager. This part needs some tweak, e.g why assigned device could be detected through this way. > > We will increase/decrease the assigned device counter in kvm/x86. And you need explain why we don't need similar thing in other arch. Thanks > Both vDPA and VFIO would go thro...

...gt; We used to detect assigned device via VFIO manipulated device >> conters. This is less flexible consider VFIO is not the only >> interface for assigned device. vDPA devices has dedicated >> backed hardware as well. So this patch tries to detect >> the assigned device via irqbypass manager. >> >> We will increase/decrease the assigned device counter in kvm/x86. >> Both vDPA and VFIO would go through this code path. >> >> This code path only affect x86 for now. >> >> Signed-off-by: Zhu Lingshan <lingshan.zhu at intel.com> > &g...

...anipulated device > conters. This is less flexible consider VFIO is not the only > interface for assigned device. vDPA devices has dedicated > backed hardware as well. So this patch tries to detect > the assigned device via irqbypass manager. > > We will increase/decrease the assigned device counter in kvm/x86. > Both vDPA and VFIO would go through this code path. > > This code path only affect x86 for now. > > Signed-off-by: Zhu Lingshan &l...

...ingshan wrote: > We used to detect assigned device via VFIO manipulated device > conters. This is less flexible consider VFIO is not the only > interface for assigned device. vDPA devices has dedicated > backed hardware as well. So this patch tries to detect > the assigned device via irqbypass manager. > > We will increase/decrease the assigned device counter in kvm/x86. > Both vDPA and VFIO would go through this code path. > > This code path only affect x86 for now. > > Signed-off-by: Zhu Lingshan <lingshan.zhu at intel.com> I think it's best to leave...

...ingshan wrote: > We used to detect assigned device via VFIO manipulated device > conters. This is less flexible consider VFIO is not the only > interface for assigned device. vDPA devices has dedicated > backed hardware as well. So this patch tries to detect > the assigned device via irqbypass manager. > > We will increase/decrease the assigned device counter in kvm/x86. > Both vDPA and VFIO would go through this code path. > > This code path only affect x86 for now. > > Signed-off-by: Zhu Lingshan <lingshan.zhu at intel.com> I think it's best to leave...

...er and we fallback to eventfd based irq. For 2) it looks to me guest should deal with the irq synchronization when mask or unmask MSIX vectors. What's your thought? Thanks > > > Zhu Lingshan (7): > vhost: introduce vhost_call_ctx > kvm/vfio: detect assigned device via irqbypass manager > vhost_vdpa: implement IRQ offloading functions in vhost_vdpa > vDPA: implement IRQ offloading helpers in vDPA core > virtio_vdpa: init IRQ offloading function pointers to NULL. > ifcvf: replace irq_request/free with helpers in vDPA core. > irqbypass: do not s...

...q or eventfd - and not lost. > Thanks, > BR > Zhu Lingshan > > > What's your thought? > > Thanks > > > > > > Zhu Lingshan (7): > ?? vhost: introduce vhost_call_ctx > ?? kvm/vfio: detect assigned device via irqbypass manager > ?? vhost_vdpa: implement IRQ offloading functions in vhost_vdpa > ?? vDPA: implement IRQ offloading helpers in vDPA core > ?? virtio_vdpa: init IRQ offloading function pointers to NULL. > ?? ifcvf: replace irq_request/free with helpers in vDPA c...

.... Thanks > > Thanks, > BR > Zhu Lingshan >> >> What's your thought? >> >> Thanks >> >> >>> >>> >>> Zhu Lingshan (7): >>> ?? vhost: introduce vhost_call_ctx >>> ?? kvm/vfio: detect assigned device via irqbypass manager >>> ?? vhost_vdpa: implement IRQ offloading functions in vhost_vdpa >>> ?? vDPA: implement IRQ offloading helpers in vDPA core >>> ?? virtio_vdpa: init IRQ offloading function pointers to NULL. >>> ?? ifcvf: replace irq_request/free with helpers in vDPA c...

...VT-d are present and enabled in the firmware. Some relevant command outputs below: -bash-4.2$ dmesg | grep Virtualization [ 1.299295] DMAR: Intel(R) Virtualization Technology for Directed I/O -bash-4.2$ lsmod | grep kvm kvm_intel 174841 0 kvm 578518 1 kvm_intel irqbypass 13503 1 kvm sudo virt-install --virt-type kvm --name <my name> --memory 8192 --cdrom <my path>/CentOS-7-x86_64-Everything-1708.iso --disk size=4 --os-variant rhel7 ERROR Host does not support any virtualization options I don't see any options to increase the verbo...

...ideodev videobuf2_common ecdh_generic rtsx_usb snd_hda_codec_hdmi usbhid snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio nouveau arc4 nls_iso8859_1 nls_cp437 i915 vfat fat intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel ath10k_pci msr kvm ath10k_core snd_hda_intel irqbypass ath mxm_wmi snd_hda_codec ttm joydev mac80211 snd_hda_core drm_kms_helper crct10dif_pclmul snd_hwdep crc32_pclmul snd_pcm crc32c_intel drm hid_multitouch ghash_clmulni_intel snd_timer hid_generic iTCO_wdt aesni_intel mei_hdcp iTCO_vendor_support snd aes_x86_64 fb_sys_fops cfg80211 crypto_simd a...

...2): net/mlx5: Avoid RDMA file inclusion in core driver net/mlx5: Avoid eswitch header inclusion in fs core layer Tariq Toukan (1): net/mlx5: kTLS, Improve TLS params layout structures Zhu Lingshan (7): vhost: introduce vhost_vring_call kvm: detect assigned device via irqbypass manager vDPA: add get_vq_irq() in vdpa_config_ops vhost_vdpa: implement IRQ offloading in vhost_vdpa ifcvf: implement vdpa_config_ops.get_vq_irq() irqbypass: do not start cons/prod when failed connect vDPA: dont change vq irq after DRIVER_OK arch/um/drivers/virtio_um...

...arc4 mousedev joydev nouveau iTCO_wdt iTCO_vendor_support snd_hda_codec_realtek snd_hda_codec_generic acer_wmi sparse_keymap mxm_wmi hid_logitech_hidpp uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_v4l2 videobuf2_core videodev media intel_powerclamp coretemp kvm_intel kvm ath9k ath9k_common irqbypass ath9k_hw crc32c_intel ath intel_cstate mac80211 ttm evdev input_leds led_class mac_hid psmouse pcspkr drm_kms_helper broadcom bcm_phy_lib snd_hda_intel i2c_i801 cfg80211 i2c_smbus snd_hda_codec drm tg3 snd_hda_core snd_hwdep rfkill snd_pcm syscopyarea snd_timer ptp sysfillrect snd sysimgblt pps_cor...

...4359420 R14: 0000000000000000 R15: 0000000000000000 [ 71.303361] Modules linked in: rfkill sunrpc snd_hda_codec_realtek snd_hda_codec_generic ledtrig_audio snd_hda_intel snd_intel_dspcfg snd_hda_codec snd_hda_core edac_mce_amd snd_hwdep kvm_amd snd_seq ccp snd_seq_device snd_pcm kvm snd_timer snd irqbypass soundcore sp5100_tco pcspkr crct10dif_pclmul crc32_pclmul ghash_clmulni_intel wmi_bmof joydev i2c_piix4 fam15h_power k10temp acpi_cpufreq ip_tables xfs libcrc32c sd_mod t10_pi sg nouveau video mxm_wmi i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops ttm broadcom bcm_phy_lib...

...ip6table_filter ip6_tables iptable_mangle iptable_security iptable_raw iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack snd_hda_codec_generic vboxdrv(OE) iosf_mbi kvm_intel snd_hda_intel kvm snd_hda_codec snd_hda_core snd_hwdep snd_seq snd_seq_device joydev snd_pcm ppdev irqbypass crct10dif_pclmul crc32_pclmul snd_timer snd acpi_cpufreq virtio_balloon parport_pc tpm_tis soundcore tpm i2c_piix4 parport nfsd auth_rpcgss nfs_acl lockd grace sunrpc xfs libcrc32c virtio_console virtio_net virtio_blk qxl drm_kms_helper ttm drm crc32c_intel serio_raw virtio_pci virtio_ring virtio a...

..._vmalloc memstick videobuf2_memops videobuf2_v4l2 videobuf2_core rtsx_usb videodev btusb btrtl arc4 snd_hda_codec_realtek snd_hda_codec_generic joydev nls_iso8859_1 hid_multitouch nls_cp437 intel_rapl x86_pkg_temp_thermal intel_powerclamp vfat coretemp fat kvm_intel iTCO_wdt iTCO_vendor_support kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel pcbc aesni_intel ath10k_pci snd_hda_intel ath10k_core aes_x86_64 snd_hda_codec crypto_simd ath glue_helper cryptd snd_hda_core mac80211 snd_hwdep snd_pcm pcspkr r8169 cfg80211 mii snd_timer acer_wmi snd sparse_keymap wmi_bmof idma64 hci...

...kernel: Device: nouveau timeout Aug 02 14:19:42 localhost.localdomain kernel: Modules linked in: tcp_lp ext4 mbcache jbd2 fuse xt_CHECKSUM ipt_MASQUERADE nf_nat_masquerade_ipv4 tun devlink ip6t_rpfilter ip Aug 02 14:19:42 localhost.localdomain kernel: irqbypass crc32_pclmul ghash_clmulni_intel aesni_intel lrw gf128mul snd_hda_intel glue_helper ablk_helper cryptd snd_hda_codec Aug 02 14:19:42 localhost.localdomain kernel: e1000e drm crct10dif_pclmul crct10dif_common libata crc32c_intel nvme serio_raw ptp rtsx_pci nvme_core pps_core drm_panel_orie Aug 02 1...

..._vmalloc memstick videobuf2_memops videobuf2_v4l2 videobuf2_core rtsx_usb videodev btusb btrtl arc4 snd_hda_codec_realtek snd_hda_codec_generic joydev nls_iso8859_1 hid_multitouch nls_cp437 intel_rapl x86_pkg_temp_thermal intel_powerclamp vfat coretemp fat kvm_intel iTCO_wdt iTCO_vendor_support kvm irqbypass crct10dif_pclmul crc32_pclmul crc32c_intel ghash_clmulni_intel pcbc aesni_intel ath10k_pci snd_hda_intel ath10k_core aes_x86_64 snd_hda_codec crypto_simd ath glue_helper cryptd snd_hda_core mac80211 snd_hwdep snd_pcm pcspkr r8169 cfg80211 mii snd_timer acer_wmi snd sparse_keymap wmi_bmof idma64 hci...

...R14: 0000000000004000 R15: 0000000000004000 [ 27.391677] </TASK> [ 27.392115] Modules linked in: ocfs2_stack_user gfs2 ocfs2 ocfs2_nodemanager ocfs2_stackglue quota_tree dlm sctp ip6_udp_tunnel udp_tunnel libcrc32c binfmt_misc intel_rapl_msr intel_rapl_common intel_pmc_core kvm_intel kvm irqbypass ghash_clmulni_intel sha512_ssse3 sha512_generic snd_hda_codec_generic ledtrig_audio snd_hda_intel snd_intel_dspcfg snd_intel_sdw_acpi aesni_intel crypto_simd cryptd snd_hda_codec rapl snd_hda_core snd_hwdep snd_pcm qxl snd_timer drm_ttm_helper pcspkr iTCO_wdt snd ttm intel_pmc_bxt iTCO_vendor_suppo...