API tools faq
paste
teknoraver

hyperv boot

teknoraver
Jul 16th, 2021 (edited)
231
0
Never
Add comment
Not a member of Pastebin yet? Sign Up, it unlocks many cool features!
text 17.13 KB | None | 0 0
raw download clone embed print report
  1. [ 0.000000] Linux version 5.14.0-rc1-matteo (root@hyperv) (gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2) #33 SMP Fri Jul 16 16:45:05 CEST 2021
  2. [ 0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-5.14.0-rc1-matteo root=/dev/sda3 ro quiet
  3. [ 0.000000] KERNEL supported cpus:
  4. [ 0.000000] Intel GenuineIntel
  5. [ 0.000000] x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point registers'
  6. [ 0.000000] x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers'
  7. [ 0.000000] x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers'
  8. [ 0.000000] x86/fpu: xstate_offset[2]: 576, xstate_sizes[2]: 256
  9. [ 0.000000] x86/fpu: Enabled xstate features 0x7, context size is 832 bytes, using 'compacted' format.
  10. [ 0.000000] signal: max sigframe size: 1360
  11. [ 0.000000] BIOS-provided physical RAM map:
  12. [ 0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009ffff] usable
  13. [ 0.000000] BIOS-e820: [mem 0x00000000000c0000-0x00000000000fffff] reserved
  14. [ 0.000000] BIOS-e820: [mem 0x0000000000100000-0x000000003ed93fff] usable
  15. [ 0.000000] BIOS-e820: [mem 0x000000003ed94000-0x000000003ed94fff] ACPI data
  16. [ 0.000000] BIOS-e820: [mem 0x000000003ed95000-0x000000003eecbfff] usable
  17. [ 0.000000] BIOS-e820: [mem 0x000000003eecc000-0x000000003eeeafff] ACPI data
  18. [ 0.000000] BIOS-e820: [mem 0x000000003eeeb000-0x000000003eef1fff] type 20
  19. [ 0.000000] BIOS-e820: [mem 0x000000003eef2000-0x000000003ef1afff] reserved
  20. [ 0.000000] BIOS-e820: [mem 0x000000003ef1b000-0x000000003ff9afff] usable
  21. [ 0.000000] BIOS-e820: [mem 0x000000003ff9b000-0x000000003ffcafff] type 20
  22. [ 0.000000] BIOS-e820: [mem 0x000000003ffcb000-0x000000003fff2fff] reserved
  23. [ 0.000000] BIOS-e820: [mem 0x000000003fff3000-0x000000003fffafff] ACPI data
  24. [ 0.000000] BIOS-e820: [mem 0x000000003fffb000-0x000000003fffefff] ACPI NVS
  25. [ 0.000000] BIOS-e820: [mem 0x000000003ffff000-0x000000007fffffff] usable
  26. [ 0.000000] NX (Execute Disable) protection: active
  27. [ 0.000000] efi: EFI v2.70 by Microsoft
  28. [ 0.000000] efi: ACPI=0x3fffa000 ACPI 2.0=0x3fffa014 SMBIOS=0x3ffd8000 SMBIOS 3.0=0x3ffd6000 MEMATTR=0x3fa2aa98
  29. [ 0.000000] SMBIOS 3.1.0 present.
  30. [ 0.000000] DMI: Microsoft Corporation Virtual Machine/Virtual Machine, BIOS Hyper-V UEFI Release v4.0 11/01/2019
  31. [ 0.000000] Hypervisor detected: Microsoft Hyper-V
  32. [ 0.000000] Hyper-V: privilege flags low 0x2e7f, high 0x3b8030, hints 0x20c2c, misc 0xbed7b2
  33. [ 0.000000] Hyper-V Host Build:19041-10.0-1-0.1110
  34. [ 0.000000] Hyper-V: LAPIC Timer Frequency: 0xc3500
  35. [ 0.000000] tsc: Marking TSC unstable due to running on Hyper-V
  36. [ 0.000000] Hyper-V: Using hypercall for remote TLB flush
  37. [ 0.000000] clocksource: hyperv_clocksource_tsc_page: mask: 0xffffffffffffffff max_cycles: 0x24e6a1710, max_idle_ns: 440795202120 ns
  38. [ 0.000002] tsc: Detected 2112.005 MHz processor
  39. [ 0.000008] e820: update [mem 0x00000000-0x00000fff] usable ==> reserved
  40. [ 0.000010] e820: remove [mem 0x000a0000-0x000fffff] usable
  41. [ 0.000014] last_pfn = 0x80000 max_arch_pfn = 0x400000000
  42. [ 0.000030] x86/PAT: Configuration [0-7]: WB WC UC- UC WB WP UC- WT
  43. [ 0.008551] Using GB pages for direct mapping
  44. [ 0.008831] Secure boot could not be determined
  45. [ 0.008832] ACPI: Early table checksum verification disabled
  46. [ 0.008833] ACPI: RSDP 0x000000003FFFA014 000024 (v02 VRTUAL)
  47. [ 0.008837] ACPI: XSDT 0x000000003FFF90E8 00005C (v01 VRTUAL MICROSFT 00000001 MSFT 00000001)
  48. [ 0.008840] ACPI: FACP 0x000000003FFF8000 000114 (v06 VRTUAL MICROSFT 00000001 MSFT 00000001)
  49. [ 0.008844] ACPI: DSDT 0x000000003EECC000 01E184 (v02 MSFTVM DSDT01 00000001 MSFT 05000000)
  50. [ 0.008846] ACPI: FACS 0x000000003FFFE000 000040
  51. [ 0.008848] ACPI: OEM0 0x000000003FFF7000 000064 (v01 VRTUAL MICROSFT 00000001 MSFT 00000001)
  52. [ 0.008850] ACPI: WAET 0x000000003FFF6000 000028 (v01 VRTUAL MICROSFT 00000001 MSFT 00000001)
  53. [ 0.008852] ACPI: APIC 0x000000003FFF5000 000068 (v04 VRTUAL MICROSFT 00000001 MSFT 00000001)
  54. [ 0.008854] ACPI: SRAT 0x000000003FFF4000 0001D8 (v02 VRTUAL MICROSFT 00000001 MSFT 00000001)
  55. [ 0.008856] ACPI: BGRT 0x000000003FFF3000 000038 (v01 VRTUAL MICROSFT 00000001 MSFT 00000001)
  56. [ 0.008858] ACPI: FPDT 0x000000003ED94000 000034 (v01 VRTUAL MICROSFT 00000001 MSFT 00000001)
  57. [ 0.008860] ACPI: Reserving FACP table memory at [mem 0x3fff8000-0x3fff8113]
  58. [ 0.008861] ACPI: Reserving DSDT table memory at [mem 0x3eecc000-0x3eeea183]
  59. [ 0.008862] ACPI: Reserving FACS table memory at [mem 0x3fffe000-0x3fffe03f]
  60. [ 0.008862] ACPI: Reserving OEM0 table memory at [mem 0x3fff7000-0x3fff7063]
  61. [ 0.008863] ACPI: Reserving WAET table memory at [mem 0x3fff6000-0x3fff6027]
  62. [ 0.008864] ACPI: Reserving APIC table memory at [mem 0x3fff5000-0x3fff5067]
  63. [ 0.008864] ACPI: Reserving SRAT table memory at [mem 0x3fff4000-0x3fff41d7]
  64. [ 0.008865] ACPI: Reserving BGRT table memory at [mem 0x3fff3000-0x3fff3037]
  65. [ 0.008865] ACPI: Reserving FPDT table memory at [mem 0x3ed94000-0x3ed94033]
  66. [ 0.008886] Zone ranges:
  67. [ 0.008886] DMA [mem 0x0000000000001000-0x0000000000ffffff]
  68. [ 0.008888] DMA32 [mem 0x0000000001000000-0x000000007fffffff]
  69. [ 0.008889] Normal empty
  70. [ 0.008889] Movable zone start for each node
  71. [ 0.008890] Early memory node ranges
  72. [ 0.008890] node 0: [mem 0x0000000000001000-0x000000000009ffff]
  73. [ 0.008891] node 0: [mem 0x0000000000100000-0x000000003ed93fff]
  74. [ 0.008892] node 0: [mem 0x000000003ed95000-0x000000003eecbfff]
  75. [ 0.008892] node 0: [mem 0x000000003ef1b000-0x000000003ff9afff]
  76. [ 0.008893] node 0: [mem 0x000000003ffff000-0x000000007fffffff]
  77. [ 0.008894] Initmem setup node 0 [mem 0x0000000000001000-0x000000007fffffff]
  78. [ 0.008896] On node 0, zone DMA: 1 pages in unavailable ranges
  79. [ 0.008914] On node 0, zone DMA: 96 pages in unavailable ranges
  80. [ 0.010085] On node 0, zone DMA32: 1 pages in unavailable ranges
  81. [ 0.010105] On node 0, zone DMA32: 79 pages in unavailable ranges
  82. [ 0.011283] On node 0, zone DMA32: 100 pages in unavailable ranges
  83. [ 0.011307] ACPI: PM-Timer IO Port: 0x408
  84. [ 0.011311] ACPI: LAPIC_NMI (acpi_id[0x01] dfl dfl lint[0x1])
  85. [ 0.011560] IOAPIC[0]: apic_id 4, version 17, address 0xfec00000, GSI 0-23
  86. [ 0.011564] ACPI: INT_SRC_OVR (bus 0 bus_irq 9 global_irq 9 high level)
  87. [ 0.011567] ACPI: Using ACPI (MADT) for SMP configuration information
  88. [ 0.011570] e820: update [mem 0x3f36e000-0x3f374fff] usable ==> reserved
  89. [ 0.011579] smpboot: Allowing 4 CPUs, 0 hotplug CPUs
  90. [ 0.011587] [mem 0x80000000-0xffffffff] available for PCI devices
  91. [ 0.011588] Booting paravirtualized kernel on Hyper-V
  92. [ 0.011589] clocksource: refined-jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645519600211568 ns
  93. [ 0.013613] setup_percpu: NR_CPUS:8 nr_cpumask_bits:8 nr_cpu_ids:4 nr_node_ids:1
  94. [ 0.013694] percpu: Embedded 53 pages/cpu s177048 r8192 d31848 u524288
  95. [ 0.013698] pcpu-alloc: s177048 r8192 d31848 u524288 alloc=1*2097152
  96. [ 0.013700] pcpu-alloc: [0] 0 1 2 3
  97. [ 0.013711] Built 1 zonelists, mobility grouping on. Total pages: 514338
  98. [ 0.013712] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-5.14.0-rc1-matteo root=/dev/sda3 ro quiet
  99. [ 0.013731] Unknown command line parameters: BOOT_IMAGE=/boot/vmlinuz-5.14.0-rc1-matteo
  100. [ 0.013788] Dentry cache hash table entries: 262144 (order: 9, 2097152 bytes, linear)
  101. [ 0.013818] Inode-cache hash table entries: 131072 (order: 8, 1048576 bytes, linear)
  102. [ 0.013852] mem auto-init: stack:off, heap alloc:on, heap free:off
  103. [ 0.016733] Memory: 2025248K/2096044K available (10247K kernel code, 1463K rwdata, 2848K rodata, 1180K init, 908K bss, 70540K reserved, 0K cma-reserved)
  104. [ 0.016737] random: get_random_u64 called from __kmem_cache_create+0x1e/0x620 with crng_init=0
  105. [ 0.016821] SLUB: HWalign=64, Order=0-3, MinObjects=0, CPUs=4, Nodes=1
  106. [ 0.016826] ftrace: allocating 24250 entries in 95 pages
  107. [ 0.022394] ftrace: allocated 95 pages with 6 groups
  108. [ 0.022454] rcu: Hierarchical RCU implementation.
  109. [ 0.022455] rcu: RCU restricting CPUs from NR_CPUS=8 to nr_cpu_ids=4.
  110. [ 0.022456] Rude variant of Tasks RCU enabled.
  111. [ 0.022456] Tracing variant of Tasks RCU enabled.
  112. [ 0.022457] rcu: RCU calculated value of scheduler-enlistment delay is 25 jiffies.
  113. [ 0.022457] rcu: Adjusting geometry for rcu_fanout_leaf=16, nr_cpu_ids=4
  114. [ 0.024761] Using NULL legacy PIC
  115. [ 0.024762] NR_IRQS: 4352, nr_irqs: 72, preallocated irqs: 0
  116. [ 0.025153] random: crng done (trusting CPU's manufacturer)
  117. [ 0.025171] Console: colour dummy device 80x25
  118. [ 0.025178] printk: console [tty0] enabled
  119. [ 0.025181] ACPI: Core revision 20210604
  120. [ 0.025276] Failed to register legacy timer interrupt
  121. [ 0.025276] APIC: Switch to symmetric I/O mode setup
  122. [ 0.025287] Hyper-V: Using IPI hypercalls
  123. [ 0.025288] Hyper-V: Using enlightened APIC (xapic mode)
  124. [ 0.025367] Calibrating delay loop (skipped), value calculated using timer frequency.. 4224.01 BogoMIPS (lpj=8448020)
  125. [ 0.025369] pid_max: default: 32768 minimum: 301
  126. [ 0.025720] Mount-cache hash table entries: 4096 (order: 3, 32768 bytes, linear)
  127. [ 0.025724] Mountpoint-cache hash table entries: 4096 (order: 3, 32768 bytes, linear)
  128. [ 0.026053] Last level iTLB entries: 4KB 64, 2MB 8, 4MB 8
  129. [ 0.026055] Last level dTLB entries: 4KB 64, 2MB 0, 4MB 0, 1GB 4
  130. [ 0.026060] Spectre V1 : Mitigation: usercopy/swapgs barriers and __user pointer sanitization
  131. [ 0.026061] Spectre V2 : Mitigation: Enhanced IBRS
  132. [ 0.026062] Spectre V2 : Spectre v2 / SpectreRSB mitigation: Filling RSB on context switch
  133. [ 0.026063] Spectre V2 : mitigation: Enabling conditional Indirect Branch Prediction Barrier
  134. [ 0.026064] Speculative Store Bypass: Mitigation: Speculative Store Bypass disabled via prctl and seccomp
  135. [ 0.026065] TAA: Mitigation: TSX disabled
  136. [ 0.026073] SRBDS: Mitigation: TSX disabled
  137. [ 0.026179] Freeing SMP alternatives memory: 24K
  138. [ 0.026216] smpboot: CPU0: Intel(R) Core(TM) i7-8665U CPU @ 1.90GHz (family: 0x6, model: 0x8e, stepping: 0xc)
  139. [ 0.026265] Performance Events: unsupported p6 CPU model 142 no PMU driver, software events only.
  140. [ 0.026277] rcu: Hierarchical SRCU implementation.
  141. [ 0.026384] NMI watchdog: Perf NMI watchdog permanently disabled
  142. [ 0.026412] smp: Bringing up secondary CPUs ...
  143. [ 0.026448] x86: Booting SMP configuration:
  144. [ 0.026448] .... node #0, CPUs: #1 #2 #3
  145. [ 0.026810] smp: Brought up 1 node, 4 CPUs
  146. [ 0.026810] smpboot: Max logical packages: 1
  147. [ 0.026810] smpboot: Total of 4 processors activated (16896.04 BogoMIPS)
  148. [ 0.026810] devtmpfs: initialized
  149. [ 0.026810] clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns
  150. [ 0.026810] futex hash table entries: 1024 (order: 4, 65536 bytes, linear)
  151. [ 0.026810] NET: Registered PF_NETLINK/PF_ROUTE protocol family
  152. [ 0.026810] thermal_sys: Registered thermal governor 'fair_share'
  153. [ 0.026810] thermal_sys: Registered thermal governor 'bang_bang'
  154. [ 0.026810] thermal_sys: Registered thermal governor 'step_wise'
  155. [ 0.026810] thermal_sys: Registered thermal governor 'user_space'
  156. [ 0.026810] cpuidle: using governor ladder
  157. [ 0.026810] cpuidle: using governor menu
  158. [ 0.026810] ACPI: bus type PCI registered
  159. [ 0.026810] Kprobes globally optimized
  160. [ 0.029633] cryptd: max_cpu_qlen set to 1000
  161. [ 0.033535] ACPI: PRMT not present
  162. [ 0.033535] PRM: found 4294967277 modules
  163. [ 0.033535] ACPI: Added _OSI(Module Device)
  164. [ 0.033535] ACPI: Added _OSI(Processor Device)
  165. [ 0.033535] ACPI: Added _OSI(3.0 _SCP Extensions)
  166. [ 0.033535] ACPI: Added _OSI(Processor Aggregator Device)
  167. [ 0.033535] ACPI: Added _OSI(Linux-Dell-Video)
  168. [ 0.033535] ACPI: Added _OSI(Linux-Lenovo-NV-HDMI-Audio)
  169. [ 0.033535] ACPI: Added _OSI(Linux-HPI-Hybrid-Graphics)
  170. [ 0.039051] ACPI: 1 ACPI AML tables successfully acquired and loaded
  171. [ 0.039789] ACPI: Interpreter enabled
  172. [ 0.039792] ACPI: PM: (supports S0 S5)
  173. [ 0.039792] ACPI: Using IOAPIC for interrupt routing
  174. [ 0.039800] PCI: Using host bridge windows from ACPI; if necessary, use "pci=nocrs" and report a bug
  175. [ 0.039871] ACPI: Enabled 2 GPEs in block 00 to 0F
  176. [ 0.040714] SCSI subsystem initialized
  177. [ 0.040729] Registered efivars operations
  178. [ 0.041397] hv_vmbus: Vmbus version:5.2
  179. [ 0.041460] PCI: Using ACPI for IRQ routing
  180. [ 0.041461] PCI: System does not support PCI
  181. [ 0.041558] clocksource: Switched to clocksource hyperv_clocksource_tsc_page
  182. [ 0.044772] pnp: PnP ACPI init
  183. [ 0.045010] pnp: PnP ACPI: found 1 devices
  184. [ 0.055281] clocksource: acpi_pm: mask: 0xffffff max_cycles: 0xffffff, max_idle_ns: 2085701024 ns
  185. [ 0.055302] NET: Registered PF_INET protocol family
  186. [ 0.055327] IP idents hash table entries: 32768 (order: 6, 262144 bytes, linear)
  187. [ 0.055506] tcp_listen_portaddr_hash hash table entries: 1024 (order: 2, 16384 bytes, linear)
  188. [ 0.055515] TCP established hash table entries: 16384 (order: 5, 131072 bytes, linear)
  189. [ 0.055536] TCP bind hash table entries: 16384 (order: 6, 262144 bytes, linear)
  190. [ 0.055548] TCP: Hash tables configured (established 16384 bind 16384)
  191. [ 0.055564] UDP hash table entries: 1024 (order: 3, 32768 bytes, linear)
  192. [ 0.055568] UDP-Lite hash table entries: 1024 (order: 3, 32768 bytes, linear)
  193. [ 0.055586] NET: Registered PF_UNIX/PF_LOCAL protocol family
  194. [ 0.055589] NET: Registered PF_XDP protocol family
  195. [ 0.061308] workingset: timestamp_bits=46 max_order=19 bucket_order=0
  196. [ 0.067627] Block layer SCSI generic (bsg) driver version 0.4 loaded (major 252)
  197. [ 0.067628] io scheduler mq-deadline registered
  198. [ 0.067973] hv_vmbus: registering driver hyperv_fb
  199. [ 0.068936] hv_vmbus: registering driver hv_storvsc
  200. [ 0.068975] i8042: PNP: No PS/2 controller found.
  201. [ 0.068976] hv_vmbus: registering driver hyperv_keyboard
  202. [ 0.069104] hyperv_fb: Synthvid Version major 3, minor 5
  203. [ 0.069112] rtc_cmos 00:00: RTC can wake from S4
  204. [ 0.069281] hyperv_fb: Screen resolution: 1024x768, Color depth: 32
  205. [ 0.069984] Console: switching to colour frame buffer device 128x48
  206. [ 0.070424] rtc_cmos 00:00: registered as rtc0
  207. [ 0.070495] input: AT Translated Set 2 keyboard as /devices/LNXSYSTM:00/LNXSYBUS:00/ACPI0004:00/VMBUS:00/d34b2567-b9b6-42b9-8778-0a4ec0b955bf/serio0/input/input0
  208. [ 0.070714] rtc_cmos 00:00: setting system clock to 2021-07-16T15:13:31 UTC (1626448411)
  209. [ 0.070731] rtc_cmos 00:00: alarms up to one month, 114 bytes nvram
  210. [ 0.070741] intel_pstate: CPU model not supported
  211. [ 0.070846] NET: Registered PF_PACKET protocol family
  212. [ 0.071328] IPI shorthand broadcast: enabled
  213. [ 0.071333] AVX2 version of gcm_enc/dec engaged.
  214. [ 0.071507] scsi host0: storvsc_host_t
  215. [ 0.071786] AES CTR mode by8 optimization enabled
  216. [ 0.071978] scsi 0:0:0:0: Direct-Access Msft Virtual Disk 1.0 PQ: 0 ANSI: 5
  217. [ 0.073532] sd 0:0:0:0: [sda] 83886080 512-byte logical blocks: (42.9 GB/40.0 GiB)
  218. [ 0.073536] sd 0:0:0:0: [sda] 4096-byte physical blocks
  219. [ 0.073584] sd 0:0:0:0: [sda] Write Protect is off
  220. [ 0.073587] sd 0:0:0:0: [sda] Mode Sense: 0f 00 00 00
  221. [ 0.073689] sd 0:0:0:0: [sda] Write cache: enabled, read cache: enabled, doesn't support DPO or FUA
  222. [ 0.080418] Unstable clock detected, switching default tracing clock to "global"
  223. If you want to keep using the local clock, then add:
  224. "trace_clock=local"
  225. on the kernel command line
  226. [ 0.085612] sda: sda1 sda2 sda3
  227. [ 0.202138] sd 0:0:0:0: [sda] Attached SCSI disk
  228. [ 0.484723] EXT4-fs (sda3): mounted filesystem with ordered data mode. Opts: (null). Quota mode: disabled.
  229. [ 0.484760] VFS: Mounted root (ext4 filesystem) readonly on device 8:3.
  230. [ 0.486727] Freeing unused kernel image (initmem) memory: 1180K
  231. [ 0.502081] Write protecting the kernel read-only data: 16384k
  232. [ 0.504036] Freeing unused kernel image (text/rodata gap) memory: 2040K
  233. [ 0.505046] Freeing unused kernel image (rodata/data gap) memory: 1248K
  234. [ 0.506629] x86/mm: Checked W+X mappings: passed, no W+X pages found.
  235. [ 0.506642] Run /sbin/init as init process
  236. [ 0.506645] with arguments:
  237. [ 0.506647] /sbin/init
  238. [ 0.506649] with environment:
  239. [ 0.506650] HOME=/
  240. [ 0.506652] TERM=linux
  241. [ 0.506653] BOOT_IMAGE=/boot/vmlinuz-5.14.0-rc1-matteo
  242. [ 0.851460] fuse: init (API version 7.34)
  243. [ 0.880466] EXT4-fs (sda3): re-mounted. Opts: discard,errors=remount-ro. Quota mode: disabled.
  244. [ 0.964839] hv_vmbus: registering driver hv_netvsc
  245. [ 0.967531] hv_vmbus: registering driver hv_balloon
  246. [ 0.971171] pstore: Using crash dump compression: deflate
  247. [ 0.971178] pstore: Registered efi as persistent store backend
  248. [ 0.977775] hv_balloon: Using Dynamic Memory protocol version 2.0
  249. [ 1.003427] Adding 1952764k swap on /dev/sda2. Priority:-2 extents:1 across:1952764k Ds
  250. [ 1.009404] FAT-fs (sda1): Volume was not properly unmounted. Some data may be corrupt. Please run fsck.
  251. matteo@hyperv:~# systemd-analyze
  252. Startup finished in 598ms (kernel) + 504ms (userspace) = 1.102s
  253. graphical.target reached after 498ms in userspace
Add Comment
Please, Sign In to add comment
Public Pastes
We use cookies for various purposes including analytics. By continuing to use Pastebin, you agree to our use of cookies as described in the Cookies Policy.  OK, I Understand
Not a member of Pastebin yet?
Sign Up, it unlocks many cool features!