Re: [PATCH 00/13] mmu_notifier kill invalidate_page callback v2
On Thu, Aug 31, 2017 at 05:17:25PM -0400, Jerome Glisse wrote: > Jérôme Glisse (13): > dax: update to new mmu_notifier semantic > mm/rmap: update to new mmu_notifier semantic > powerpc/powernv: update to new mmu_notifier semantic > drm/amdgpu: update to new mmu_notifier semantic > IB/umem: update to new mmu_notifier semantic > IB/hfi1: update to new mmu_notifier semantic > iommu/amd: update to new mmu_notifier semantic > iommu/intel: update to new mmu_notifier semantic > misc/mic/scif: update to new mmu_notifier semantic > sgi-gru: update to new mmu_notifier semantic > xen/gntdev: update to new mmu_notifier semantic > KVM: update to new mmu_notifier semantic > mm/mmu_notifier: kill invalidate_page Reviewed-by: Andrea Arcangeli ___ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
Re: [PATCH 00/13] mmu_notifier kill invalidate_page callback
On Wed, Aug 30, 2017, at 10:57 AM, Adam Borowski wrote: > On Tue, Aug 29, 2017 at 08:56:15PM -0400, Jerome Glisse wrote: > > I will wait for people to test and for result of my own test before > > reposting if need be, otherwise i will post as separate patch. > > > > > But from a _very_ quick read-through this looks fine. But it obviously > > > needs testing. > > > > > > People - *especially* the people who saw issues under KVM - can you > > > try out Jérôme's patch-series? I aded some people to the cc, the full > > > series is on lkml. Jérôme - do you have a git branch for people to > > > test that they could easily pull and try out? > > > > https://cgit.freedesktop.org/~glisse/linux mmu-notifier branch > > git://people.freedesktop.org/~glisse/linux > > Tested your branch as of 10f07641, on a long list of guest VMs. > No earth-shattering kaboom. I've been using the mmu_notifier branch @ a3d944233bcf8c for the last 36 hours or so, also without incident. Unlike most other reporters, I experienced a similar splat on 4.12: Aug 03 15:02:47 kvm_master kernel: [ cut here ] Aug 03 15:02:47 kvm_master kernel: WARNING: CPU: 13 PID: 1653 at arch/x86/kvm/mmu.c:682 mmu_spte_clear_track_bits+0xfb/0x100 [kvm] Aug 03 15:02:47 kvm_master kernel: Modules linked in: vhost_net vhost tap xt_conntrack xt_CHECKSUM iptable_mangle ipt_REJECT nf_reject_ipv4 xt_tcpudp tun ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter msr nls_iso8859_1 nls_cp437 intel_rapl ipt_ MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack sb_edac x86_pkg_temp_thermal intel_powerclamp coretemp crct10dif_pclmul crc32_pclmul ghash_clmulni_intel input_leds pcbc aesni_intel led_class aes_x86_6 4 mxm_wmi crypto_simd glue_helper uvcvideo cryptd videobuf2_vmalloc videobuf2_memops igb videobuf2_v4l2 videobuf2_core snd_usb_audio videodev media joydev ptp evdev mousedev intel_cstate pps_core mac_hid intel_rapl_perf snd_hda_intel snd_virtuoso snd_usbmidi_lib snd_hda_codec snd_oxygen_lib snd_hda_core Aug 03 15:02:47 kvm_master kernel: snd_mpu401_uart snd_rawmidi snd_hwdep snd_seq_device snd_pcm snd_timer snd soundcore i2c_algo_bit pcspkr i2c_i801 lpc_ich ioatdma shpchp dca wmi acpi_power_meter tpm_tis tpm_tis_core tpm button bridge stp llc sch_fq_codel virtio_pci virtio_blk virtio_balloon virtio_net virtio_ring virtio kvm_intel kvm sg ip_tables x_tables hid_logitech_hidpp hid_logitech_dj hid_generic hid_microsoft usbhid hid sr_mod cdrom sd_mod xhci_pci ahci libahci xhci_hcd libata usbcore scsi_mod usb_common zfs(PO) zunicode(PO) zavl(PO) icp(PO) zcommon(PO) znvpair(PO) spl(O) drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm vfio_pci irqbypass vfio_virqfd vfio_iommu_type1 vfio vfat fat ext4 crc16 jbd2 fscrypto mbcache dm_thin_pool dm_cache dm_persistent_data dm_bio_prison dm_bufio dm_raid raid456 libcrc32c Aug 03 15:02:47 kvm_master kernel: crc32c_generic crc32c_intel async_raid6_recov async_memcpy async_pq async_xor xor async_tx raid6_pq dm_mod dax raid1 md_mod Aug 03 15:02:47 kvm_master kernel: CPU: 13 PID: 1653 Comm: kworker/13:2 Tainted: PB D W O4.12.3-1-ARCH #1 Aug 03 15:02:47 kvm_master kernel: Hardware name: Supermicro SYS-7038A-I/X10DAI, BIOS 2.0a 11/09/2016 Aug 03 15:02:47 kvm_master kernel: Workqueue: events mmput_async_fn Aug 03 15:02:47 kvm_master kernel: task: 9fa89751b900 task.stack: c179880d8000 Aug 03 15:02:47 kvm_master kernel: RIP: 0010:mmu_spte_clear_track_bits+0xfb/0x100 [kvm] Aug 03 15:02:47 kvm_master kernel: RSP: 0018:c179880dbc20 EFLAGS: 00010246 Aug 03 15:02:47 kvm_master kernel: RAX: RBX: 0009c07cce77 RCX: dead00ff Aug 03 15:02:47 kvm_master kernel: RDX: RSI: 9fa82d6d6f08 RDI: f6e76701f300 Aug 03 15:02:47 kvm_master kernel: RBP: c179880dbc38 R08: 0010 R09: 000d Aug 03 15:02:47 kvm_master kernel: R10: 9fa0a56b0008 R11: 9fa0a56b R12: 009c07cc Aug 03 15:02:47 kvm_master kernel: R13: 9fa88b99 R14: 9f9e19dbb1b8 R15: Aug 03 15:02:47 kvm_master kernel: FS: () GS:9fac5f34() knlGS: Aug 03 15:02:47 kvm_master kernel: CS: 0010 DS: ES: CR0: 80050033 Aug 03 15:02:47 kvm_master kernel: CR2: d1b542d71000 CR3: 000570a09000 CR4: 003426e0 Aug 03 15:02:47 kvm_master kernel: DR0: DR1
Re: [PATCH 00/13] mmu_notifier kill invalidate_page callback
taskboxtes...@gmail.com liked your message with Boxer for Android. On Sep 1, 2017 10:48 AM, Jeff Cook wrote: On Wed, Aug 30, 2017, at 10:57 AM, Adam Borowski wrote: > On Tue, Aug 29, 2017 at 08:56:15PM -0400, Jerome Glisse wrote: > > I will wait for people to test and for result of my own test before > > reposting if need be, otherwise i will post as separate patch. > > > > > But from a _very_ quick read-through this looks fine. But it obviously > > > needs testing. > > > > > > People - *especially* the people who saw issues under KVM - can you > > > try out Jérôme's patch-series? I aded some people to the cc, the full > > > series is on lkml. Jérôme - do you have a git branch for people to > > > test that they could easily pull and try out? > > > > https://cgit.freedesktop.org/~glisse/linux mmu-notifier branch > > git://people.freedesktop.org/~glisse/linux > > Tested your branch as of 10f07641, on a long list of guest VMs. > No earth-shattering kaboom. I've been using the mmu_notifier branch @ a3d944233bcf8c for the last 36 hours or so, also without incident. Unlike most other reporters, I experienced a similar splat on 4.12: Aug 03 15:02:47 kvm_master kernel: [ cut here ] Aug 03 15:02:47 kvm_master kernel: WARNING: CPU: 13 PID: 1653 at arch/x86/kvm/mmu.c:682 mmu_spte_clear_track_bits+0xfb/0x100 [kvm] Aug 03 15:02:47 kvm_master kernel: Modules linked in: vhost_net vhost tap xt_conntrack xt_CHECKSUM iptable_mangle ipt_REJECT nf_reject_ipv4 xt_tcpudp tun ebtable_filter ebtables ip6table_filter ip6_tables iptable_filter msr nls_iso8859_1 nls_cp437 intel_rapl ipt_ MASQUERADE nf_nat_masquerade_ipv4 iptable_nat nf_conntrack_ipv4 nf_defrag_ipv4 nf_nat_ipv4 nf_nat nf_conntrack sb_edac x86_pkg_temp_thermal intel_powerclamp coretemp crct10dif_pclmul crc32_pclmul ghash_clmulni_intel input_leds pcbc aesni_intel led_class aes_x86_6 4 mxm_wmi crypto_simd glue_helper uvcvideo cryptd videobuf2_vmalloc videobuf2_memops igb videobuf2_v4l2 videobuf2_core snd_usb_audio videodev media joydev ptp evdev mousedev intel_cstate pps_core mac_hid intel_rapl_perf snd_hda_intel snd_virtuoso snd_usbmidi_lib snd_hda_codec snd_oxygen_lib snd_hda_core Aug 03 15:02:47 kvm_master kernel: snd_mpu401_uart snd_rawmidi snd_hwdep snd_seq_device snd_pcm snd_timer snd soundcore i2c_algo_bit pcspkr i2c_i801 lpc_ich ioatdma shpchp dca wmi acpi_power_meter tpm_tis tpm_tis_core tpm button bridge stp llc sch_fq_codel virtio_pci virtio_blk virtio_balloon virtio_net virtio_ring virtio kvm_intel kvm sg ip_tables x_tables hid_logitech_hidpp hid_logitech_dj hid_generic hid_microsoft usbhid hid sr_mod cdrom sd_mod xhci_pci ahci libahci xhci_hcd libata usbcore scsi_mod usb_common zfs(PO) zunicode(PO) zavl(PO) icp(PO) zcommon(PO) znvpair(PO) spl(O) drm_kms_helper syscopyarea sysfillrect sysimgblt fb_sys_fops drm vfio_pci irqbypass vfio_virqfd vfio_iommu_type1 vfio vfat fat ext4 crc16 jbd2 fscrypto mbcache dm_thin_pool dm_cache dm_persistent_data dm_bio_prison dm_bufio dm_raid raid456 libcrc32c Aug 03 15:02:47 kvm_master kernel: crc32c_generic crc32c_intel async_raid6_recov async_memcpy async_pq async_xor xor async_tx raid6_pq dm_mod dax raid1 md_mod Aug 03 15:02:47 kvm_master kernel: CPU: 13 PID: 1653 Comm: kworker/13:2 Tainted: PB D W O4.12.3-1-ARCH #1 Aug 03 15:02:47 kvm_master kernel: Hardware name: Supermicro SYS-7038A-I/X10DAI, BIOS 2.0a 11/09/2016 Aug 03 15:02:47 kvm_master kernel: Workqueue: events mmput_async_fn Aug 03 15:02:47 kvm_master kernel: task: 9fa89751b900 task.stack: c179880d8000 Aug 03 15:02:47 kvm_master kernel: RIP: 0010:mmu_spte_clear_track_bits+0xfb/0x100 [kvm] Aug 03 15:02:47 kvm_master kernel: RSP: 0018:c179880dbc20 EFLAGS: 00010246 Aug 03 15:02:47 kvm_master kernel: RAX: RBX: 0009c07cce77 RCX: dead00ff Aug 03 15:02:47 kvm_master kernel: RDX: RSI: 9fa82d6d6f08 RDI: f6e76701f300 Aug 03 15:02:47 kvm_master kernel: RBP: c179880dbc38 R08: 0010 R09: 000d Aug 03 15:02:47 kvm_master kernel: R10: 9fa0a56b0008 R11: 9fa0a56b R12: 009c07cc Aug 03 15:02:47 kvm_master kernel: R13: 9fa88b99 R14: 9f9e19dbb1b8 R15: Aug 03 15:02:47 kvm_master kernel: FS: () GS:9fac5f34() knlGS: Aug 03 15:02:47 kvm_master kernel: CS: 0010 DS: ES: CR0: 80050033 Aug 03 15:02:47 kvm_master kernel: CR2: d1b542d71000 CR3: 000570a09000
Re: [PATCH 00/13] mmu_notifier kill invalidate_page callback
On Tue, Aug 29, 2017 at 08:56:15PM -0400, Jerome Glisse wrote: > I will wait for people to test and for result of my own test before > reposting if need be, otherwise i will post as separate patch. > > > But from a _very_ quick read-through this looks fine. But it obviously > > needs testing. > > > > People - *especially* the people who saw issues under KVM - can you > > try out Jérôme's patch-series? I aded some people to the cc, the full > > series is on lkml. Jérôme - do you have a git branch for people to > > test that they could easily pull and try out? > > https://cgit.freedesktop.org/~glisse/linux mmu-notifier branch > git://people.freedesktop.org/~glisse/linux Tested your branch as of 10f07641, on a long list of guest VMs. No earth-shattering kaboom. Meow! -- ⢀⣴⠾⠻⢶⣦⠀ ⣾⠁⢰⠒⠀⣿⡁ Vat kind uf sufficiently advanced technology iz dis!? ⢿⡄⠘⠷⠚⠋⠀ -- Genghis Ht'rok'din ⠈⠳⣄ ___ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
Re: [PATCH 00/13] mmu_notifier kill invalidate_page callback
On Tue, 2017-08-29 at 20:56 -0400, Jerome Glisse wrote: > On Tue, Aug 29, 2017 at 05:11:24PM -0700, Linus Torvalds wrote: > > > People - *especially* the people who saw issues under KVM - can you > > try out Jérôme's patch-series? I aded some people to the cc, the full > > series is on lkml. Jérôme - do you have a git branch for people to > > test that they could easily pull and try out? > > https://cgit.freedesktop.org/~glisse/linux mmu-notifier branch > git://people.freedesktop.org/~glisse/linux Looks good here. I reproduced fairly quickly with RT host and 1 RT guest by just having the guest do a parallel kbuild over NFS (the guest had to be restored afterward, was corrupted). I'm currently flogging 2 guests as well as the host, whimper free. I'll let the lot broil for while longer, but at this point, smoke/flame appearance seems comfortingly unlikely. -Mike ___ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
Re: [PATCH 00/13] mmu_notifier kill invalidate_page callback
On Tue, Aug 29, 2017 at 05:11:24PM -0700, Linus Torvalds wrote: > On Tue, Aug 29, 2017 at 4:54 PM, Jérôme Glisse wrote: > > > > Note this is barely tested. I intend to do more testing of next few days > > but i do not have access to all hardware that make use of the mmu_notifier > > API. > > Thanks for doing this. > > > First 2 patches convert existing call of mmu_notifier_invalidate_page() > > to mmu_notifier_invalidate_range() and bracket those call with call to > > mmu_notifier_invalidate_range_start()/end(). > > Ok, those two patches are a bit more complex than I was hoping for, > but not *too* bad. > > And the final end result certainly looks nice: > > > 16 files changed, 74 insertions(+), 214 deletions(-) > > Yeah, removing all those invalidate_page() notifiers certainly makes > for a nice patch. > > And I actually think you missed some more lines that can now be > removed: kvm_arch_mmu_notifier_invalidate_page() should no longer be > needed either, so you can remove all of those too (most of them are > empty inline functions, but x86 has one that actually does something. > > So there's an added 30 or so dead lines that should be removed in the > kvm patch, I think. Yes i missed that. I will wait for people to test and for result of my own test before reposting if need be, otherwise i will post as separate patch. > > But from a _very_ quick read-through this looks fine. But it obviously > needs testing. > > People - *especially* the people who saw issues under KVM - can you > try out Jérôme's patch-series? I aded some people to the cc, the full > series is on lkml. Jérôme - do you have a git branch for people to > test that they could easily pull and try out? https://cgit.freedesktop.org/~glisse/linux mmu-notifier branch git://people.freedesktop.org/~glisse/linux (Sorry if that tree is bit big it has a lot of dead thing i need to push a clean and slim one) Jérôme ___ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
Re: [PATCH 00/13] mmu_notifier kill invalidate_page callback
On Tue, Aug 29, 2017 at 4:54 PM, Jérôme Glisse wrote: > > Note this is barely tested. I intend to do more testing of next few days > but i do not have access to all hardware that make use of the mmu_notifier > API. Thanks for doing this. > First 2 patches convert existing call of mmu_notifier_invalidate_page() > to mmu_notifier_invalidate_range() and bracket those call with call to > mmu_notifier_invalidate_range_start()/end(). Ok, those two patches are a bit more complex than I was hoping for, but not *too* bad. And the final end result certainly looks nice: > 16 files changed, 74 insertions(+), 214 deletions(-) Yeah, removing all those invalidate_page() notifiers certainly makes for a nice patch. And I actually think you missed some more lines that can now be removed: kvm_arch_mmu_notifier_invalidate_page() should no longer be needed either, so you can remove all of those too (most of them are empty inline functions, but x86 has one that actually does something. So there's an added 30 or so dead lines that should be removed in the kvm patch, I think. But from a _very_ quick read-through this looks fine. But it obviously needs testing. People - *especially* the people who saw issues under KVM - can you try out Jérôme's patch-series? I aded some people to the cc, the full series is on lkml. Jérôme - do you have a git branch for people to test that they could easily pull and try out? Linus ___ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu
