* kernel boot fail with efi earlyprintk (bisected)
@ 2014-08-19 8:16 ` Dave Young
0 siblings, 0 replies; 16+ messages in thread
From: Dave Young @ 2014-08-19 8:16 UTC (permalink / raw)
To: lv.zheng-ral2JQCrhuEAvxtiuMwx3w
Cc: matt.fleming-ral2JQCrhuEAvxtiuMwx3w,
linux-efi-u79uwXL29TY76Z2rM5mHXA,
linux-acpi-u79uwXL29TY76Z2rM5mHXA,
linux-kernel-u79uwXL29TY76Z2rM5mHXA,
devel-E0kO6a4B6psdnm+yROfE0A, lenb-DgEjT+Ai2ygdnm+yROfE0A,
rafael.j.wysocki-ral2JQCrhuEAvxtiuMwx3w,
robert.moore-ral2JQCrhuEAvxtiuMwx3w
Hi,
3.16 kernel boot fail with earlyprintk=efi on my laptop.
It keeps scrolling at the bottom line of screen.
Bisected, the first bad commit is below:
commit 86dfc6f339886559d80ee0d4bd20fe5ee90450f0
Author: Lv Zheng <lv.zheng-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Date: Fri Apr 4 12:38:57 2014 +0800
ACPICA: Tables: Fix table checksums verification before installation.
I did some debugging by enabling both serial and efi earlyprintk, below is
some debug dmesg, seems early_ioremap fails in scroll up function due to
no free slot, but I'm still not sure if the debug info is right or not.
[ 256.174623] sd 0:0:0:0: [sda] Synchronizing SCSI cache
[ 256.183352] reboot: Restarting system
[ 256.188450] reboot: machine restart
[ 0.000000] Linux version 3.17.0-rc1+ (dyoung-je1gSBvt1Tc/CGXRbJeUwh/sF2h8X+2i0E9HWUfgJXw@public.gmane.org) (gcc version 4.8.1 20130603 (Red Hat 4.8.1-1) (GC4
[ 0.000000] Command line: BOOT_IMAGE=/bzImage selinux=0 root=UUID=29296957-5ac6-40c2-a20d-b43d38a1d29d ro crashkernel=256M i
[ 0.000000] KERNEL supported cpus:
[ 0.000000] Intel GenuineIntel
[ 0.000000] e820: BIOS-provided physical RAM map:
[ 0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009ffff] usable
[ 0.000000] BIOS-e820: [mem 0x0000000000100000-0x00000000db41dfff] usable
[ 0.000000] BIOS-e820: [mem 0x00000000db41e000-0x00000000db71afff] reserved
[ 0.000000] BIOS-e820: [mem 0x00000000db71b000-0x00000000db82ffff] ACPI data
[ 0.000000] BIOS-e820: [mem 0x00000000db830000-0x00000000db9e0fff] ACPI NVS
[ 0.000000] BIOS-e820: [mem 0x00000000db9e1000-0x00000000dbaf4fff] reserved
[ 0.000000] BIOS-e820: [mem 0x00000000dbaf5000-0x00000000dbaf5fff] usable
[ 0.000000] BIOS-e820: [mem 0x00000000dbaf6000-0x00000000dbb7bfff] ACPI NVS
[ 0.000000] BIOS-e820: [mem 0x00000000dbb7c000-0x00000000dbffffff] usable
[ 0.000000] BIOS-e820: [mem 0x00000000f0000000-0x00000000f7ffffff] reserved
[ 0.000000] BIOS-e820: [mem 0x00000000fed1c000-0x00000000fed1ffff] reserved
[ 0.000000] BIOS-e820: [mem 0x00000000ff000000-0x00000000ffffffff] reserved
[ 0.000000] BIOS-e820: [mem 0x0000000100000000-0x000000041fffffff] usable
[ 0.000000] bootconsole [earlyser0] enabled
[ 0.000000] bootconsole [earlyefi0] enabled
[ 0.000000] NX (Execute Disable) protection: active
[ 0.000000] extended physical RAM map:
[ 0.000000] reserve setup_data: [mem 0x0000000000000000-0x000000000009ffff] usable
[ 0.000000] reserve setup_data: [mem 0x0000000000100000-0x00000000d5552017] usable
[ 0.000000] reserve setup_data: [mem 0x00000000d5552018-0x00000000d5561057] usable
[ 0.000000] reserve setup_data: [mem 0x00000000d5561058-0x00000000d5562017] usable
[ 0.000000] reserve setup_data: [mem 0x00000000d5562018-0x00000000d5578c57] usable
[ 0.000000] reserve setup_data: [mem 0x00000000d5578c58-0x00000000d5579017] usable
[ 0.000000] reserve setup_data: [mem 0x00000000d5579018-0x00000000d5593457] usable
[ 0.000000] reserve setup_data: [mem 0x00000000d5593458-0x00000000d5594017] usable
[ 0.000000] reserve setup_data: [mem 0x00000000d5594018-0x00000000d559d057] usable
[ 0.000000] reserve setup_data: [mem 0x00000000d559d058-0x00000000db41dfff] usable
[ 0.000000] reserve setup_data: [mem 0x00000000db41e000-0x00000000db71afff] reserved
[ 0.000000] reserve setup_data: [mem 0x00000000db71b000-0x00000000db82ffff] ACPI data
[ 0.000000] reserve setup_data: [mem 0x00000000db830000-0x00000000db9e0fff] ACPI NVS
[ 0.000000] reserve setup_data: [mem 0x00000000db9e1000-0x00000000dbaf4fff] reserved
[ 0.000000] reserve setup_data: [mem 0x00000000dbaf5000-0x00000000dbaf5fff] usable
[ 0.000000] reserve setup_data: [mem 0x00000000dbaf6000-0x00000000dbb7bfff] ACPI NVS
[ 0.000000] reserve setup_data: [mem 0x00000000dbb7c000-0x00000000dbffffff] usable
[ 0.000000] reserve setup_data: [mem 0x00000000f0000000-0x00000000f7ffffff] reserved
[ 0.000000] reserve setup_data: [mem 0x00000000fed1c000-0x00000000fed1ffff] reserved
[ 0.000000] reserve setup_data: [mem 0x00000000ff000000-0x00000000ffffffff] reserved
[ 0.000000] reserve setup_data: [mem 0x0000000100000000-0x000000041fffffff] usable
[ 0.000000] efi: EFI v2.31 by American Megatrends
[ 0.000000] efi: ACPI 2.0=0xdb752000 SMBIOS=0xdbab4b98 ACPI=0xdb752000 MPS=0xf4bd0
[ 0.000000] efi: mem00: type=3, attr=0xf, range=[0x0000000000000000-0x0000000000008000) (0MB)
[ 0.000000] efi: mem01: type=2, attr=0xf, range=[0x0000000000008000-0x0000000000009000) (0MB)
[ 0.000000] efi: mem02: type=7, attr=0xf, range=[0x0000000000009000-0x000000000003f000) (0MB)
[ 0.000000] efi: mem03: type=4, attr=0xf, range=[0x000000000003f000-0x0000000000050000) (0MB)
[ 0.000000] efi: mem04: type=3, attr=0xf, range=[0x0000000000050000-0x00000000000a0000) (0MB)
[ 0.000000] efi: mem05: type=3, attr=0xf, range=[0x0000000000100000-0x0000000000110000) (0MB)
[ 0.000000] efi: mem06: type=7, attr=0xf, range=[0x0000000000110000-0x0000000001000000) (14MB)
[ 0.000000] efi: mem07: type=2, attr=0xf, range=[0x0000000001000000-0x0000000001100000) (1MB)
[ 0.000000] efi: mem08: type=7, attr=0xf, range=[0x0000000001100000-0x0000000002000000) (15MB)
[ 0.000000] efi: mem09: type=2, attr=0xf, range=[0x0000000002000000-0x0000000003678000) (22MB)
[ 0.000000] efi: mem10: type=7, attr=0xf, range=[0x0000000003678000-0x000000003e1b0000) (939MB)
[ 0.000000] efi: mem11: type=2, attr=0xf, range=[0x000000003e1b0000-0x0000000040000000) (30MB)
[ 0.000000] efi: mem12: type=7, attr=0xf, range=[0x0000000040000000-0x0000000096b1e000) (1387MB)
[ 0.000000] efi: mem13: type=2, attr=0xf, range=[0x0000000096b1e000-0x00000000cc5d3000) (858MB)
[ 0.000000] efi: mem14: type=4, attr=0xf, range=[0x00000000cc5d3000-0x00000000cc78c000) (1MB)
[ 0.000000] efi: mem15: type=7, attr=0xf, range=[0x00000000cc78c000-0x00000000cc81f000) (0MB)
[ 0.000000] efi: mem16: type=4, attr=0xf, range=[0x00000000cc81f000-0x00000000cd0f1000) (8MB)
[ 0.000000] efi: mem17: type=7, attr=0xf, range=[0x00000000cd0f1000-0x00000000cd0f2000) (0MB)
[ 0.000000] efi: mem18: type=4, attr=0xf, range=[0x00000000cd0f2000-0x00000000cd0f3000) (0MB)
[ 0.000000] efi: mem19: type=7, attr=0xf, range=[0x00000000cd0f3000-0x00000000cd0f9000) (0MB)
[ 0.000000] efi: mem20: type=4, attr=0xf, range=[0x00000000cd0f9000-0x00000000cd0fa000) (0MB)
[ 0.000000] efi: mem21: type=7, attr=0xf, range=[0x00000000cd0fa000-0x00000000cd112000) (0MB)
[ 0.000000] efi: mem22: type=4, attr=0xf, range=[0x00000000cd112000-0x00000000cd113000) (0MB)
[ 0.000000] efi: mem23: type=7, attr=0xf, range=[0x00000000cd113000-0x00000000cd117000) (0MB)
[ 0.000000] efi: mem24: type=4, attr=0xf, range=[0x00000000cd117000-0x00000000cd118000) (0MB)
[ 0.000000] efi: mem25: type=7, attr=0xf, range=[0x00000000cd118000-0x00000000cd1e1000) (0MB)
[ 0.000000] efi: mem26: type=4, attr=0xf, range=[0x00000000cd1e1000-0x00000000cd1f6000) (0MB)
[ 0.000000] efi: mem27: type=7, attr=0xf, range=[0x00000000cd1f6000-0x00000000cd242000) (0MB)
[ 0.000000] efi: mem28: type=4, attr=0xf, range=[0x00000000cd242000-0x00000000cd243000) (0MB)
[ 0.000000] efi: mem29: type=7, attr=0xf, range=[0x00000000cd243000-0x00000000cd28f000) (0MB)
[ 0.000000] efi: mem30: type=4, attr=0xf, range=[0x00000000cd28f000-0x00000000cd31e000) (0MB)
[ 0.000000] efi: mem31: type=7, attr=0xf, range=[0x00000000cd31e000-0x00000000cd321000) (0MB)
[ 0.000000] efi: mem32: type=4, attr=0xf, range=[0x00000000cd321000-0x00000000cd322000) (0MB)
[ 0.000000] efi: mem33: type=7, attr=0xf, range=[0x00000000cd322000-0x00000000cd323000) (0MB)
[ 0.000000] efi: mem34: type=4, attr=0xf, range=[0x00000000cd323000-0x00000000cd324000) (0MB)
[ 0.000000] efi: mem35: type=7, attr=0xf, range=[0x00000000cd324000-0x00000000cd40f000) (0MB)
[ 0.000000] efi: mem36: type=4, attr=0xf, range=[0x00000000cd40f000-0x00000000cd424000) (0MB)
[ 0.000000] efi: mem37: type=7, attr=0xf, range=[0x00000000cd424000-0x00000000cd527000) (1MB)
[ 0.000000] efi: mem38: type=4, attr=0xf, range=[0x00000000cd527000-0x00000000cd528000) (0MB)
[ 0.000000] efi: mem39: type=7, attr=0xf, range=[0x00000000cd528000-0x00000000cd548000) (0MB)
[ 0.000000] efi: mem40: type=4, attr=0xf, range=[0x00000000cd548000-0x00000000cd549000) (0MB)
[ 0.000000] efi: mem41: type=7, attr=0xf, range=[0x00000000cd549000-0x00000000cd54e000) (0MB)
[ 0.000000] efi: mem42: type=4, attr=0xf, range=[0x00000000cd54e000-0x00000000cd550000) (0MB)
[ 0.000000] efi: mem43: type=7, attr=0xf, range=[0x00000000cd550000-0x00000000cd63d000) (0MB)
[ 0.000000] efi: mem44: type=4, attr=0xf, range=[0x00000000cd63d000-0x00000000cd652000) (0MB)
[ 0.000000] efi: mem45: type=7, attr=0xf, range=[0x00000000cd652000-0x00000000cd777000) (1MB)
[ 0.000000] efi: mem46: type=4, attr=0xf, range=[0x00000000cd777000-0x00000000cd778000) (0MB)
[ 0.000000] efi: mem47: type=7, attr=0xf, range=[0x00000000cd778000-0x00000000cd77d000) (0MB)
[ 0.000000] efi: mem48: type=4, attr=0xf, range=[0x00000000cd77d000-0x00000000cd77f000) (0MB)
[ 0.000000] efi: mem49: type=7, attr=0xf, range=[0x00000000cd77f000-0x00000000cd86c000) (0MB)
[ 0.000000] efi: mem50: type=4, attr=0xf, range=[0x00000000cd86c000-0x00000000cd881000) (0MB)
[ 0.000000] efi: mem51: type=7, attr=0xf, range=[0x00000000cd881000-0x00000000cd9bb000) (1MB)
[ 0.000000] efi: mem52: type=4, attr=0xf, range=[0x00000000cd9bb000-0x00000000cd9bc000) (0MB)
[ 0.000000] efi: mem53: type=7, attr=0xf, range=[0x00000000cd9bc000-0x00000000cd9bf000) (0MB)
[ 0.000000] efi: mem54: type=4, attr=0xf, range=[0x00000000cd9bf000-0x00000000cd9c0000) (0MB)
[ 0.000000] efi: mem55: type=7, attr=0xf, range=[0x00000000cd9c0000-0x00000000cd9cb000) (0MB)
[ 0.000000] efi: mem56: type=4, attr=0xf, range=[0x00000000cd9cb000-0x00000000cd9cc000) (0MB)
[ 0.000000] efi: mem57: type=7, attr=0xf, range=[0x00000000cd9cc000-0x00000000cdb0c000) (1MB)
[ 0.000000] efi: mem58: type=4, attr=0xf, range=[0x00000000cdb0c000-0x00000000cdb0d000) (0MB)
[ 0.000000] efi: mem59: type=7, attr=0xf, range=[0x00000000cdb0d000-0x00000000cdbd7000) (0MB)
[ 0.000000] efi: mem60: type=4, attr=0xf, range=[0x00000000cdbd7000-0x00000000cdc02000) (0MB)
[ 0.000000] efi: mem61: type=7, attr=0xf, range=[0x00000000cdc02000-0x00000000cdc0a000) (0MB)
[ 0.000000] efi: mem62: type=4, attr=0xf, range=[0x00000000cdc0a000-0x00000000cdc0b000) (0MB)
[ 0.000000] efi: mem63: type=7, attr=0xf, range=[0x00000000cdc0b000-0x00000000cdc0e000) (0MB)
[ 0.000000] efi: mem64: type=4, attr=0xf, range=[0x00000000cdc0e000-0x00000000cdc0f000) (0MB)
[ 0.000000] efi: mem65: type=7, attr=0xf, range=[0x00000000cdc0f000-0x00000000cde37000) (2MB)
[ 0.000000] efi: mem66: type=4, attr=0xf, range=[0x00000000cde37000-0x00000000cde38000) (0MB)
[ 0.000000] efi: mem67: type=7, attr=0xf, range=[0x00000000cde38000-0x00000000cde39000) (0MB)
[ 0.000000] efi: mem68: type=4, attr=0xf, range=[0x00000000cde39000-0x00000000cde62000) (0MB)
[ 0.000000] efi: mem69: type=7, attr=0xf, range=[0x00000000cde62000-0x00000000cdf0c000) (0MB)
[ 0.000000] efi: mem70: type=4, attr=0xf, range=[0x00000000cdf0c000-0x00000000ce13f000) (2MB)
[ 0.000000] efi: mem71: type=7, attr=0xf, range=[0x00000000ce13f000-0x00000000ce163000) (0MB)
[ 0.000000] efi: mem72: type=4, attr=0xf, range=[0x00000000ce163000-0x00000000ce1e3000) (0MB)
[ 0.000000] efi: mem73: type=7, attr=0xf, range=[0x00000000ce1e3000-0x00000000ce200000) (0MB)
[ 0.000000] efi: mem74: type=4, attr=0xf, range=[0x00000000ce200000-0x00000000ce201000) (0MB)
[ 0.000000] efi: mem75: type=7, attr=0xf, range=[0x00000000ce201000-0x00000000ce220000) (0MB)
[ 0.000000] efi: mem76: type=4, attr=0xf, range=[0x00000000ce220000-0x00000000cf095000) (14MB)
[ 0.000000] efi: mem77: type=7, attr=0xf, range=[0x00000000cf095000-0x00000000cf099000) (0MB)
[ 0.000000] efi: mem78: type=4, attr=0xf, range=[0x00000000cf099000-0x00000000cf611000) (5MB)
[ 0.000000] efi: mem79: type=7, attr=0xf, range=[0x00000000cf611000-0x00000000d5550000) (95MB)
[ 0.000000] efi: mem80: type=2, attr=0xf, range=[0x00000000d5550000-0x00000000d559e000) (0MB)
[ 0.000000] efi: mem81: type=7, attr=0xf, range=[0x00000000d559e000-0x00000000d559f000) (0MB)
[ 0.000000] efi: mem82: type=2, attr=0xf, range=[0x00000000d559f000-0x00000000d5768000) (1MB)
[ 0.000000] efi: mem83: type=1, attr=0xf, range=[0x00000000d5768000-0x00000000d589d000) (1MB)
[ 0.000000] efi: mem84: type=7, attr=0xf, range=[0x00000000d589d000-0x00000000d8af4000) (50MB)
[ 0.000000] efi: mem85: type=4, attr=0xf, range=[0x00000000d8af4000-0x00000000d8b21000) (0MB)
[ 0.000000] efi: mem86: type=7, attr=0xf, range=[0x00000000d8b21000-0x00000000d8b32000) (0MB)
[ 0.000000] efi: mem87: type=4, attr=0xf, range=[0x00000000d8b32000-0x00000000d9f01000) (19MB)
[ 0.000000] efi: mem88: type=7, attr=0xf, range=[0x00000000d9f01000-0x00000000da65c000) (7MB)
[ 0.000000] efi: mem89: type=3, attr=0xf, range=[0x00000000da65c000-0x00000000db41e000) (13MB)
[ 0.000000] efi: mem90: type=0, attr=0xf, range=[0x00000000db41e000-0x00000000db4b7000) (0MB)
[ 0.000000] efi: mem91: type=0, attr=0xf, range=[0x00000000db4b7000-0x00000000db71b000) (2MB)
[ 0.000000] efi: mem92: type=9, attr=0xf, range=[0x00000000db71b000-0x00000000db752000) (0MB)
[ 0.000000] efi: mem93: type=9, attr=0xf, range=[0x00000000db752000-0x00000000db830000) (0MB)
[ 0.000000] efi: mem94: type=10, attr=0xf, range=[0x00000000db830000-0x00000000db90c000) (0MB)
[ 0.000000] efi: mem95: type=10, attr=0xf, range=[0x00000000db90c000-0x00000000db9e1000) (0MB)
[ 0.000000] efi: mem96: type=6, attr=0x800000000000000f, range=[0x00000000db9e1000-0x00000000dba08000) (0MB)
[ 0.000000] efi: mem97: type=6, attr=0x800000000000000f, range=[0x00000000dba08000-0x00000000dbaa7000) (0MB)
[ 0.000000] efi: mem98: type=6, attr=0x800000000000000f, range=[0x00000000dbaa7000-0x00000000dbaaa000) (0MB)
[ 0.000000] efi: mem99: type=6, attr=0x800000000000000f, range=[0x00000000dbaaa000-0x00000000dbab6000) (0MB)
[ 0.000000] efi: mem100: type=5, attr=0x800000000000000f, range=[0x00000000dbab6000-0x00000000dbac2000) (0MB)
[ 0.000000] efi: mem101: type=5, attr=0x800000000000000f, range=[0x00000000dbac2000-0x00000000dbaf5000) (0MB)
[ 0.000000] efi: mem102: type=4, attr=0xf, range=[0x00000000dbaf5000-0x00000000dbaf6000) (0MB)
[ 0.000000] efi: mem103: type=10, attr=0xf, range=[0x00000000dbaf6000-0x00000000dbb7c000) (0MB)
[ 0.000000] efi: mem104: type=4, attr=0xf, range=[0x00000000dbb7c000-0x00000000dbcce000) (1MB)
[ 0.000000] efi: mem105: type=3, attr=0xf, range=[0x00000000dbcce000-0x00000000dbf72000) (2MB)
[ 0.000000] efi: mem106: type=4, attr=0xf, range=[0x00000000dbf72000-0x00000000dbf76000) (0MB)
[ 0.000000] efi: mem107: type=3, attr=0xf, range=[0x00000000dbf76000-0x00000000dbf7a000) (0MB)
[ 0.000000] efi: mem108: type=4, attr=0xf, range=[0x00000000dbf7a000-0x00000000dbf87000) (0MB)
[ 0.000000] efi: mem109: type=3, attr=0xf, range=[0x00000000dbf87000-0x00000000dbf99000) (0MB)
[ 0.000000] efi: mem110: type=4, attr=0xf, range=[0x00000000dbf99000-0x00000000dc000000) (0MB)
[ 0.000000] efi: mem111: type=7, attr=0xf, range=[0x0000000100000000-0x0000000420000000) (12800MB)
[ 0.000000] efi: mem112: type=11, attr=0x8000000000000001, range=[0x00000000f0000000-0x00000000f8000000) (128MB)
[ 0.000000] efi: mem113: type=11, attr=0x8000000000000001, range=[0x00000000fed1c000-0x00000000fed20000) (0MB)
[ 0.000000] efi: mem114: type=11, attr=0x8000000000000001, range=[0x00000000ff000000-0x0000000100000000) (16MB)
[ 0.000000] SMBIOS 2.7 present.
[ 0.000000] e820: last_pfn = 0x420000 max_arch_pfn = 0x400000000
[ 0.000000] x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106
[ 0.000000] e820: last_pfn = 0xdc000 max_arch_pfn = 0x400000000
[ 0.000000] found SMP MP-table at [mem 0x000f4bc0-0x000f4bcf] mapped at [ffff8800000f4bc0]
[ 0.000000] Using GB pages for direct mapping
[ 0.000000] init_memory_mapping: [mem 0x00000000-0x000fffff]
[ 0.000000] init_memory_mapping: [mem 0x41fe00000-0x41fffffff]
[ 0.000000] init_memory_mapping: [mem 0x41c000000-0x41fdfffff]
[ 0.000000] init_memory_mapping: [mem 0x400000000-0x41bffffff]
[ 0.000000] init_memory_mapping: [mem 0x00100000-0xdb41dfff]
[ 0.000000] init_memory_mapping: [mem 0xdbaf5000-0xdbaf5fff]
[ 0.000000] init_memory_mapping: [mem 0xdbb7c000-0xdbffffff]
[ 0.000000] init_memory_mapping: [mem 0x100000000-0x3ffffffff]
[ 0.000000] RAMDISK: [mem 0x3e1b0000-0x3e982fff]
[ 0.000000] ACPI: Early table checksum verification disabled
[ 0.000000] ACPI: RSDP 0x00000000DB752000 000024 (v02 HPQOEM)
[ 0.000000] ACPI: XSDT 0x00000000DB752088 00008C (v01 HPQOEM SLIC-WKS 01072009 AMI 00010013)
[ 0.000000] ACPI: FACP 0x00000000DB759590 00010C (v05 HPQOEM SLIC-WKS 01072009 AMI 00010013)
[ 0.000000] ------------[ cut here ]------------
[ 0.000000] WARNING: CPU: 0 PID: 0 at mm/early_ioremap.c:116 __early_ioremap+0x90/0x1c4()
[ 0.000000] __early_ioremap(ed00c800, 00000c80) not found slot
[ 0.000000] Modules linked in:
[ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 3.17.0-rc1+ #204
[ 0.000000] Hardware name: Hewlett-Packard HP Z420 Workstation/1589, BIOS J61 v03.15 05/09/2013
[ 0.000000] 0000000000000000 ffffffff8173b970 ffffffff814bb919 ffffffff8173b9b8
[ 0.000000] ffffffff8173b9a8 ffffffff810638c9 ffffffff8184ee81 ffffffffff538000
[ 0.000000] 0000000000000c80 0000000000000003 0000000000000c80 ffffffff8173ba08
[ 0.000000] Call Trace:
[ 0.000000] [<ffffffff814bb919>] dump_stack+0x4e/0x7a
[ 0.000000] [<ffffffff810638c9>] warn_slowpath_common+0x75/0x8e
[ 0.000000] [<ffffffff8184ee81>] ? __early_ioremap+0x90/0x1c4
[ 0.000000] [<ffffffff81063929>] warn_slowpath_fmt+0x47/0x49
[ 0.000000] [<ffffffff8184ee81>] __early_ioremap+0x90/0x1c4
[ 0.000000] [<ffffffff8124cf4d>] ? sprintf+0x46/0x48
[ 0.000000] [<ffffffff8184f169>] early_ioremap+0x13/0x15
[ 0.000000] [<ffffffff814ae4f0>] early_efi_map+0x24/0x26
[ 0.000000] [<ffffffff81060985>] early_efi_scroll_up+0x6d/0xc0
[ 0.000000] [<ffffffff81060b88>] early_efi_write+0x1b0/0x214
[ 0.000000] [<ffffffff8109ec3a>] call_console_drivers.constprop.21+0x73/0x7e
[ 0.000000] [<ffffffff8109fab4>] console_unlock+0x151/0x3b2
[ 0.000000] [<ffffffff810a01b4>] ? vprintk_emit+0x49f/0x532
[ 0.000000] [<ffffffff810a0236>] vprintk_emit+0x521/0x532
[ 0.000000] [<ffffffff8109fce6>] ? console_unlock+0x383/0x3b2
[ 0.000000] [<ffffffff814b6f01>] printk+0x4f/0x51
[ 0.000000] [<ffffffff81292f9c>] acpi_os_vprintf+0x2b/0x2d
[ 0.000000] [<ffffffff81292fe1>] acpi_os_printf+0x43/0x45
[ 0.000000] [<ffffffff812bc44c>] acpi_info+0x5c/0x63
[ 0.000000] [<ffffffff8183cdfa>] ? __acpi_map_table+0x13/0x18
[ 0.000000] [<ffffffff814afc88>] ? acpi_os_map_iomem+0x21/0x147
[ 0.000000] [<ffffffff812b7e59>] acpi_tb_print_table_header+0x177/0x186
[ 0.000000] [<ffffffff812b79da>] acpi_tb_install_table_with_override+0x4b/0x62
[ 0.000000] [<ffffffff812b7b80>] acpi_tb_install_standard_table+0xd9/0x215
[ 0.000000] [<ffffffff8184f169>] ? early_ioremap+0x13/0x15
[ 0.000000] [<ffffffff8183cdfa>] ? __acpi_map_table+0x13/0x18
[ 0.000000] [<ffffffff81857545>] acpi_tb_parse_root_table+0x16e/0x1b4
[ 0.000000] [<ffffffff818575e2>] acpi_initialize_tables+0x57/0x59
[ 0.000000] [<ffffffff8185591d>] acpi_table_init+0x50/0xce
[ 0.000000] [<ffffffff8183cea2>] acpi_boot_table_init+0x1e/0x85
[ 0.000000] [<ffffffff81834638>] setup_arch+0x9b7/0xcc4
[ 0.000000] [<ffffffff81830b3e>] start_kernel+0x94/0x42d
[ 0.000000] [<ffffffff81830120>] ? early_idt_handlers+0x120/0x120
[ 0.000000] [<ffffffff818304a2>] x86_64_start_reservations+0x2a/0x2c
[ 0.000000] [<ffffffff81830597>] x86_64_start_kernel+0xf3/0x100
[ 0.000000] ---[ end trace 48732c7db414b8fe ]---
[ 0.000000] ------------[ cut here ]------------
[ 0.000000] WARNING: CPU: 0 PID: 0 at mm/early_ioremap.c:116 __early_ioremap+0x90/0x1c4()
[ 0.000000] __early_ioremap(ed00c800, 00000c80) not found slot
[ 0.000000] Modules linked in:
[ 0.000000] CPU: 0 PID: 0 Comm: swapper Tainted: G W 3.17.0-rc1+ #204
[ 0.000000] Hardware name: Hewlett-Packard HP Z420 Workstation/1589, BIOS J61 v03.15 05/09/2013
[ 0.000000] 0000000000000000 ffffffff8173b970 ffffffff814bb919 ffffffff8173b9b8
[ 0.000000] ffffffff8173b9a8 ffffffff810638c9 ffffffff8184ee81 ffffffffff538000
[ 0.000000] 0000000000000c80 0000000000000003 0000000000000c80 ffffffff8173ba08
[ 0.000000] Call Trace:
[ 0.000000] [<ffffffff814bb919>] dump_stack+0x4e/0x7a
[ 0.000000] [<ffffffff810638c9>] warn_slowpath_common+0x75/0x8e
[ 0.000000] [<ffffffff8184ee81>] ? __early_ioremap+0x90/0x1c4
[ 0.000000] [<ffffffff81063929>] warn_slowpath_fmt+0x47/0x49
[ 0.000000] [<ffffffff8184ee81>] __early_ioremap+0x90/0x1c4
[ 0.000000] [<ffffffff8184f169>] early_ioremap+0x13/0x15
[ 0.000000] [<ffffffff814ae4f0>] early_efi_map+0x24/0x26
[ 0.000000] [<ffffffff81060985>] early_efi_scroll_up+0x6d/0xc0
[ 0.000000] [<ffffffff81060b88>] early_efi_write+0x1b0/0x214
[ 0.000000] [<ffffffff8109ec3a>] call_console_drivers.constprop.21+0x73/0x7e
[ 0.000000] [<ffffffff8109fb5d>] console_unlock+0x1fa/0x3b2
[ 0.000000] [<ffffffff810a0236>] vprintk_emit+0x521/0x532
[ 0.000000] [<ffffffff8109fce6>] ? console_unlock+0x383/0x3b2
[ 0.000000] [<ffffffff814b6f01>] printk+0x4f/0x51
[ 0.000000] [<ffffffff81292f9c>] acpi_os_vprintf+0x2b/0x2d
[ 0.000000] [<ffffffff81292fe1>] acpi_os_printf+0x43/0x45
[ 0.000000] [<ffffffff812bc44c>] acpi_info+0x5c/0x63
[ 0.000000] [<ffffffff8183cdfa>] ? __acpi_map_table+0x13/0x18
[ 0.000000] [<ffffffff814afc88>] ? acpi_os_map_iomem+0x21/0x147
[ 0.000000] [<ffffffff812b7e59>] acpi_tb_print_table_header+0x177/0x186
[ 0.000000] [<ffffffff812b79da>] acpi_tb_install_table_with_override+0x4b/0x62
[ 0.000000] [<ffffffff812b7b80>] acpi_tb_install_standard_table+0xd9/0x215
[ 0.000000] [<ffffffff8184f169>] ? early_ioremap+0x13/0x15
[ 0.000000] [<ffffffff8183cdfa>] ? __acpi_map_table+0x13/0x18
[ 0.000000] [<ffffffff81857545>] acpi_tb_parse_root_table+0x16e/0x1b4
[ 0.000000] [<ffffffff818575e2>] acpi_initialize_tables+0x57/0x59
[ 0.000000] [<ffffffff8185591d>] acpi_table_init+0x50/0xce
[ 0.000000] [<ffffffff8183cea2>] acpi_boot_table_init+0x1e/0x85
[ 0.000000] [<ffffffff81834638>] setup_arch+0x9b7/0xcc4
[ 0.000000] [<ffffffff81830b3e>] start_kernel+0x94/0x42d
[ 0.000000] [<ffffffff81830120>] ? early_idt_handlers+0x120/0x120
[ 0.000000] [<ffffffff818304a2>] x86_64_start_reservations+0x2a/0x2c
** 7 printk messages dropped ** [ 0.000000] Hardware name: Hewlett-Packard HP Z420 Workstation/1589, BIOS J61 v03.15 05/09/3
** 87 printk messages dropped ** [ 0.000000] Hardware name: Hewlett-Packard HP Z420 Workstation/1589, BIOS J61 v03.15 05/093
Thanks
Dave
^ permalink raw reply [flat|nested] 16+ messages in thread
* kernel boot fail with efi earlyprintk (bisected)
@ 2014-08-19 8:16 ` Dave Young
0 siblings, 0 replies; 16+ messages in thread
From: Dave Young @ 2014-08-19 8:16 UTC (permalink / raw)
To: lv.zheng
Cc: matt.fleming, linux-efi, linux-acpi, linux-kernel, devel, lenb,
rafael.j.wysocki, robert.moore
Hi,
3.16 kernel boot fail with earlyprintk=efi on my laptop.
It keeps scrolling at the bottom line of screen.
Bisected, the first bad commit is below:
commit 86dfc6f339886559d80ee0d4bd20fe5ee90450f0
Author: Lv Zheng <lv.zheng@intel.com>
Date: Fri Apr 4 12:38:57 2014 +0800
ACPICA: Tables: Fix table checksums verification before installation.
I did some debugging by enabling both serial and efi earlyprintk, below is
some debug dmesg, seems early_ioremap fails in scroll up function due to
no free slot, but I'm still not sure if the debug info is right or not.
[ 256.174623] sd 0:0:0:0: [sda] Synchronizing SCSI cache
[ 256.183352] reboot: Restarting system
[ 256.188450] reboot: machine restart
[ 0.000000] Linux version 3.17.0-rc1+ (dyoung@dhcp-16-198.nay.redhat.com) (gcc version 4.8.1 20130603 (Red Hat 4.8.1-1) (GC4
[ 0.000000] Command line: BOOT_IMAGE=/bzImage selinux=0 root=UUID=29296957-5ac6-40c2-a20d-b43d38a1d29d ro crashkernel=256M i
[ 0.000000] KERNEL supported cpus:
[ 0.000000] Intel GenuineIntel
[ 0.000000] e820: BIOS-provided physical RAM map:
[ 0.000000] BIOS-e820: [mem 0x0000000000000000-0x000000000009ffff] usable
[ 0.000000] BIOS-e820: [mem 0x0000000000100000-0x00000000db41dfff] usable
[ 0.000000] BIOS-e820: [mem 0x00000000db41e000-0x00000000db71afff] reserved
[ 0.000000] BIOS-e820: [mem 0x00000000db71b000-0x00000000db82ffff] ACPI data
[ 0.000000] BIOS-e820: [mem 0x00000000db830000-0x00000000db9e0fff] ACPI NVS
[ 0.000000] BIOS-e820: [mem 0x00000000db9e1000-0x00000000dbaf4fff] reserved
[ 0.000000] BIOS-e820: [mem 0x00000000dbaf5000-0x00000000dbaf5fff] usable
[ 0.000000] BIOS-e820: [mem 0x00000000dbaf6000-0x00000000dbb7bfff] ACPI NVS
[ 0.000000] BIOS-e820: [mem 0x00000000dbb7c000-0x00000000dbffffff] usable
[ 0.000000] BIOS-e820: [mem 0x00000000f0000000-0x00000000f7ffffff] reserved
[ 0.000000] BIOS-e820: [mem 0x00000000fed1c000-0x00000000fed1ffff] reserved
[ 0.000000] BIOS-e820: [mem 0x00000000ff000000-0x00000000ffffffff] reserved
[ 0.000000] BIOS-e820: [mem 0x0000000100000000-0x000000041fffffff] usable
[ 0.000000] bootconsole [earlyser0] enabled
[ 0.000000] bootconsole [earlyefi0] enabled
[ 0.000000] NX (Execute Disable) protection: active
[ 0.000000] extended physical RAM map:
[ 0.000000] reserve setup_data: [mem 0x0000000000000000-0x000000000009ffff] usable
[ 0.000000] reserve setup_data: [mem 0x0000000000100000-0x00000000d5552017] usable
[ 0.000000] reserve setup_data: [mem 0x00000000d5552018-0x00000000d5561057] usable
[ 0.000000] reserve setup_data: [mem 0x00000000d5561058-0x00000000d5562017] usable
[ 0.000000] reserve setup_data: [mem 0x00000000d5562018-0x00000000d5578c57] usable
[ 0.000000] reserve setup_data: [mem 0x00000000d5578c58-0x00000000d5579017] usable
[ 0.000000] reserve setup_data: [mem 0x00000000d5579018-0x00000000d5593457] usable
[ 0.000000] reserve setup_data: [mem 0x00000000d5593458-0x00000000d5594017] usable
[ 0.000000] reserve setup_data: [mem 0x00000000d5594018-0x00000000d559d057] usable
[ 0.000000] reserve setup_data: [mem 0x00000000d559d058-0x00000000db41dfff] usable
[ 0.000000] reserve setup_data: [mem 0x00000000db41e000-0x00000000db71afff] reserved
[ 0.000000] reserve setup_data: [mem 0x00000000db71b000-0x00000000db82ffff] ACPI data
[ 0.000000] reserve setup_data: [mem 0x00000000db830000-0x00000000db9e0fff] ACPI NVS
[ 0.000000] reserve setup_data: [mem 0x00000000db9e1000-0x00000000dbaf4fff] reserved
[ 0.000000] reserve setup_data: [mem 0x00000000dbaf5000-0x00000000dbaf5fff] usable
[ 0.000000] reserve setup_data: [mem 0x00000000dbaf6000-0x00000000dbb7bfff] ACPI NVS
[ 0.000000] reserve setup_data: [mem 0x00000000dbb7c000-0x00000000dbffffff] usable
[ 0.000000] reserve setup_data: [mem 0x00000000f0000000-0x00000000f7ffffff] reserved
[ 0.000000] reserve setup_data: [mem 0x00000000fed1c000-0x00000000fed1ffff] reserved
[ 0.000000] reserve setup_data: [mem 0x00000000ff000000-0x00000000ffffffff] reserved
[ 0.000000] reserve setup_data: [mem 0x0000000100000000-0x000000041fffffff] usable
[ 0.000000] efi: EFI v2.31 by American Megatrends
[ 0.000000] efi: ACPI 2.0=0xdb752000 SMBIOS=0xdbab4b98 ACPI=0xdb752000 MPS=0xf4bd0
[ 0.000000] efi: mem00: type=3, attr=0xf, range=[0x0000000000000000-0x0000000000008000) (0MB)
[ 0.000000] efi: mem01: type=2, attr=0xf, range=[0x0000000000008000-0x0000000000009000) (0MB)
[ 0.000000] efi: mem02: type=7, attr=0xf, range=[0x0000000000009000-0x000000000003f000) (0MB)
[ 0.000000] efi: mem03: type=4, attr=0xf, range=[0x000000000003f000-0x0000000000050000) (0MB)
[ 0.000000] efi: mem04: type=3, attr=0xf, range=[0x0000000000050000-0x00000000000a0000) (0MB)
[ 0.000000] efi: mem05: type=3, attr=0xf, range=[0x0000000000100000-0x0000000000110000) (0MB)
[ 0.000000] efi: mem06: type=7, attr=0xf, range=[0x0000000000110000-0x0000000001000000) (14MB)
[ 0.000000] efi: mem07: type=2, attr=0xf, range=[0x0000000001000000-0x0000000001100000) (1MB)
[ 0.000000] efi: mem08: type=7, attr=0xf, range=[0x0000000001100000-0x0000000002000000) (15MB)
[ 0.000000] efi: mem09: type=2, attr=0xf, range=[0x0000000002000000-0x0000000003678000) (22MB)
[ 0.000000] efi: mem10: type=7, attr=0xf, range=[0x0000000003678000-0x000000003e1b0000) (939MB)
[ 0.000000] efi: mem11: type=2, attr=0xf, range=[0x000000003e1b0000-0x0000000040000000) (30MB)
[ 0.000000] efi: mem12: type=7, attr=0xf, range=[0x0000000040000000-0x0000000096b1e000) (1387MB)
[ 0.000000] efi: mem13: type=2, attr=0xf, range=[0x0000000096b1e000-0x00000000cc5d3000) (858MB)
[ 0.000000] efi: mem14: type=4, attr=0xf, range=[0x00000000cc5d3000-0x00000000cc78c000) (1MB)
[ 0.000000] efi: mem15: type=7, attr=0xf, range=[0x00000000cc78c000-0x00000000cc81f000) (0MB)
[ 0.000000] efi: mem16: type=4, attr=0xf, range=[0x00000000cc81f000-0x00000000cd0f1000) (8MB)
[ 0.000000] efi: mem17: type=7, attr=0xf, range=[0x00000000cd0f1000-0x00000000cd0f2000) (0MB)
[ 0.000000] efi: mem18: type=4, attr=0xf, range=[0x00000000cd0f2000-0x00000000cd0f3000) (0MB)
[ 0.000000] efi: mem19: type=7, attr=0xf, range=[0x00000000cd0f3000-0x00000000cd0f9000) (0MB)
[ 0.000000] efi: mem20: type=4, attr=0xf, range=[0x00000000cd0f9000-0x00000000cd0fa000) (0MB)
[ 0.000000] efi: mem21: type=7, attr=0xf, range=[0x00000000cd0fa000-0x00000000cd112000) (0MB)
[ 0.000000] efi: mem22: type=4, attr=0xf, range=[0x00000000cd112000-0x00000000cd113000) (0MB)
[ 0.000000] efi: mem23: type=7, attr=0xf, range=[0x00000000cd113000-0x00000000cd117000) (0MB)
[ 0.000000] efi: mem24: type=4, attr=0xf, range=[0x00000000cd117000-0x00000000cd118000) (0MB)
[ 0.000000] efi: mem25: type=7, attr=0xf, range=[0x00000000cd118000-0x00000000cd1e1000) (0MB)
[ 0.000000] efi: mem26: type=4, attr=0xf, range=[0x00000000cd1e1000-0x00000000cd1f6000) (0MB)
[ 0.000000] efi: mem27: type=7, attr=0xf, range=[0x00000000cd1f6000-0x00000000cd242000) (0MB)
[ 0.000000] efi: mem28: type=4, attr=0xf, range=[0x00000000cd242000-0x00000000cd243000) (0MB)
[ 0.000000] efi: mem29: type=7, attr=0xf, range=[0x00000000cd243000-0x00000000cd28f000) (0MB)
[ 0.000000] efi: mem30: type=4, attr=0xf, range=[0x00000000cd28f000-0x00000000cd31e000) (0MB)
[ 0.000000] efi: mem31: type=7, attr=0xf, range=[0x00000000cd31e000-0x00000000cd321000) (0MB)
[ 0.000000] efi: mem32: type=4, attr=0xf, range=[0x00000000cd321000-0x00000000cd322000) (0MB)
[ 0.000000] efi: mem33: type=7, attr=0xf, range=[0x00000000cd322000-0x00000000cd323000) (0MB)
[ 0.000000] efi: mem34: type=4, attr=0xf, range=[0x00000000cd323000-0x00000000cd324000) (0MB)
[ 0.000000] efi: mem35: type=7, attr=0xf, range=[0x00000000cd324000-0x00000000cd40f000) (0MB)
[ 0.000000] efi: mem36: type=4, attr=0xf, range=[0x00000000cd40f000-0x00000000cd424000) (0MB)
[ 0.000000] efi: mem37: type=7, attr=0xf, range=[0x00000000cd424000-0x00000000cd527000) (1MB)
[ 0.000000] efi: mem38: type=4, attr=0xf, range=[0x00000000cd527000-0x00000000cd528000) (0MB)
[ 0.000000] efi: mem39: type=7, attr=0xf, range=[0x00000000cd528000-0x00000000cd548000) (0MB)
[ 0.000000] efi: mem40: type=4, attr=0xf, range=[0x00000000cd548000-0x00000000cd549000) (0MB)
[ 0.000000] efi: mem41: type=7, attr=0xf, range=[0x00000000cd549000-0x00000000cd54e000) (0MB)
[ 0.000000] efi: mem42: type=4, attr=0xf, range=[0x00000000cd54e000-0x00000000cd550000) (0MB)
[ 0.000000] efi: mem43: type=7, attr=0xf, range=[0x00000000cd550000-0x00000000cd63d000) (0MB)
[ 0.000000] efi: mem44: type=4, attr=0xf, range=[0x00000000cd63d000-0x00000000cd652000) (0MB)
[ 0.000000] efi: mem45: type=7, attr=0xf, range=[0x00000000cd652000-0x00000000cd777000) (1MB)
[ 0.000000] efi: mem46: type=4, attr=0xf, range=[0x00000000cd777000-0x00000000cd778000) (0MB)
[ 0.000000] efi: mem47: type=7, attr=0xf, range=[0x00000000cd778000-0x00000000cd77d000) (0MB)
[ 0.000000] efi: mem48: type=4, attr=0xf, range=[0x00000000cd77d000-0x00000000cd77f000) (0MB)
[ 0.000000] efi: mem49: type=7, attr=0xf, range=[0x00000000cd77f000-0x00000000cd86c000) (0MB)
[ 0.000000] efi: mem50: type=4, attr=0xf, range=[0x00000000cd86c000-0x00000000cd881000) (0MB)
[ 0.000000] efi: mem51: type=7, attr=0xf, range=[0x00000000cd881000-0x00000000cd9bb000) (1MB)
[ 0.000000] efi: mem52: type=4, attr=0xf, range=[0x00000000cd9bb000-0x00000000cd9bc000) (0MB)
[ 0.000000] efi: mem53: type=7, attr=0xf, range=[0x00000000cd9bc000-0x00000000cd9bf000) (0MB)
[ 0.000000] efi: mem54: type=4, attr=0xf, range=[0x00000000cd9bf000-0x00000000cd9c0000) (0MB)
[ 0.000000] efi: mem55: type=7, attr=0xf, range=[0x00000000cd9c0000-0x00000000cd9cb000) (0MB)
[ 0.000000] efi: mem56: type=4, attr=0xf, range=[0x00000000cd9cb000-0x00000000cd9cc000) (0MB)
[ 0.000000] efi: mem57: type=7, attr=0xf, range=[0x00000000cd9cc000-0x00000000cdb0c000) (1MB)
[ 0.000000] efi: mem58: type=4, attr=0xf, range=[0x00000000cdb0c000-0x00000000cdb0d000) (0MB)
[ 0.000000] efi: mem59: type=7, attr=0xf, range=[0x00000000cdb0d000-0x00000000cdbd7000) (0MB)
[ 0.000000] efi: mem60: type=4, attr=0xf, range=[0x00000000cdbd7000-0x00000000cdc02000) (0MB)
[ 0.000000] efi: mem61: type=7, attr=0xf, range=[0x00000000cdc02000-0x00000000cdc0a000) (0MB)
[ 0.000000] efi: mem62: type=4, attr=0xf, range=[0x00000000cdc0a000-0x00000000cdc0b000) (0MB)
[ 0.000000] efi: mem63: type=7, attr=0xf, range=[0x00000000cdc0b000-0x00000000cdc0e000) (0MB)
[ 0.000000] efi: mem64: type=4, attr=0xf, range=[0x00000000cdc0e000-0x00000000cdc0f000) (0MB)
[ 0.000000] efi: mem65: type=7, attr=0xf, range=[0x00000000cdc0f000-0x00000000cde37000) (2MB)
[ 0.000000] efi: mem66: type=4, attr=0xf, range=[0x00000000cde37000-0x00000000cde38000) (0MB)
[ 0.000000] efi: mem67: type=7, attr=0xf, range=[0x00000000cde38000-0x00000000cde39000) (0MB)
[ 0.000000] efi: mem68: type=4, attr=0xf, range=[0x00000000cde39000-0x00000000cde62000) (0MB)
[ 0.000000] efi: mem69: type=7, attr=0xf, range=[0x00000000cde62000-0x00000000cdf0c000) (0MB)
[ 0.000000] efi: mem70: type=4, attr=0xf, range=[0x00000000cdf0c000-0x00000000ce13f000) (2MB)
[ 0.000000] efi: mem71: type=7, attr=0xf, range=[0x00000000ce13f000-0x00000000ce163000) (0MB)
[ 0.000000] efi: mem72: type=4, attr=0xf, range=[0x00000000ce163000-0x00000000ce1e3000) (0MB)
[ 0.000000] efi: mem73: type=7, attr=0xf, range=[0x00000000ce1e3000-0x00000000ce200000) (0MB)
[ 0.000000] efi: mem74: type=4, attr=0xf, range=[0x00000000ce200000-0x00000000ce201000) (0MB)
[ 0.000000] efi: mem75: type=7, attr=0xf, range=[0x00000000ce201000-0x00000000ce220000) (0MB)
[ 0.000000] efi: mem76: type=4, attr=0xf, range=[0x00000000ce220000-0x00000000cf095000) (14MB)
[ 0.000000] efi: mem77: type=7, attr=0xf, range=[0x00000000cf095000-0x00000000cf099000) (0MB)
[ 0.000000] efi: mem78: type=4, attr=0xf, range=[0x00000000cf099000-0x00000000cf611000) (5MB)
[ 0.000000] efi: mem79: type=7, attr=0xf, range=[0x00000000cf611000-0x00000000d5550000) (95MB)
[ 0.000000] efi: mem80: type=2, attr=0xf, range=[0x00000000d5550000-0x00000000d559e000) (0MB)
[ 0.000000] efi: mem81: type=7, attr=0xf, range=[0x00000000d559e000-0x00000000d559f000) (0MB)
[ 0.000000] efi: mem82: type=2, attr=0xf, range=[0x00000000d559f000-0x00000000d5768000) (1MB)
[ 0.000000] efi: mem83: type=1, attr=0xf, range=[0x00000000d5768000-0x00000000d589d000) (1MB)
[ 0.000000] efi: mem84: type=7, attr=0xf, range=[0x00000000d589d000-0x00000000d8af4000) (50MB)
[ 0.000000] efi: mem85: type=4, attr=0xf, range=[0x00000000d8af4000-0x00000000d8b21000) (0MB)
[ 0.000000] efi: mem86: type=7, attr=0xf, range=[0x00000000d8b21000-0x00000000d8b32000) (0MB)
[ 0.000000] efi: mem87: type=4, attr=0xf, range=[0x00000000d8b32000-0x00000000d9f01000) (19MB)
[ 0.000000] efi: mem88: type=7, attr=0xf, range=[0x00000000d9f01000-0x00000000da65c000) (7MB)
[ 0.000000] efi: mem89: type=3, attr=0xf, range=[0x00000000da65c000-0x00000000db41e000) (13MB)
[ 0.000000] efi: mem90: type=0, attr=0xf, range=[0x00000000db41e000-0x00000000db4b7000) (0MB)
[ 0.000000] efi: mem91: type=0, attr=0xf, range=[0x00000000db4b7000-0x00000000db71b000) (2MB)
[ 0.000000] efi: mem92: type=9, attr=0xf, range=[0x00000000db71b000-0x00000000db752000) (0MB)
[ 0.000000] efi: mem93: type=9, attr=0xf, range=[0x00000000db752000-0x00000000db830000) (0MB)
[ 0.000000] efi: mem94: type=10, attr=0xf, range=[0x00000000db830000-0x00000000db90c000) (0MB)
[ 0.000000] efi: mem95: type=10, attr=0xf, range=[0x00000000db90c000-0x00000000db9e1000) (0MB)
[ 0.000000] efi: mem96: type=6, attr=0x800000000000000f, range=[0x00000000db9e1000-0x00000000dba08000) (0MB)
[ 0.000000] efi: mem97: type=6, attr=0x800000000000000f, range=[0x00000000dba08000-0x00000000dbaa7000) (0MB)
[ 0.000000] efi: mem98: type=6, attr=0x800000000000000f, range=[0x00000000dbaa7000-0x00000000dbaaa000) (0MB)
[ 0.000000] efi: mem99: type=6, attr=0x800000000000000f, range=[0x00000000dbaaa000-0x00000000dbab6000) (0MB)
[ 0.000000] efi: mem100: type=5, attr=0x800000000000000f, range=[0x00000000dbab6000-0x00000000dbac2000) (0MB)
[ 0.000000] efi: mem101: type=5, attr=0x800000000000000f, range=[0x00000000dbac2000-0x00000000dbaf5000) (0MB)
[ 0.000000] efi: mem102: type=4, attr=0xf, range=[0x00000000dbaf5000-0x00000000dbaf6000) (0MB)
[ 0.000000] efi: mem103: type=10, attr=0xf, range=[0x00000000dbaf6000-0x00000000dbb7c000) (0MB)
[ 0.000000] efi: mem104: type=4, attr=0xf, range=[0x00000000dbb7c000-0x00000000dbcce000) (1MB)
[ 0.000000] efi: mem105: type=3, attr=0xf, range=[0x00000000dbcce000-0x00000000dbf72000) (2MB)
[ 0.000000] efi: mem106: type=4, attr=0xf, range=[0x00000000dbf72000-0x00000000dbf76000) (0MB)
[ 0.000000] efi: mem107: type=3, attr=0xf, range=[0x00000000dbf76000-0x00000000dbf7a000) (0MB)
[ 0.000000] efi: mem108: type=4, attr=0xf, range=[0x00000000dbf7a000-0x00000000dbf87000) (0MB)
[ 0.000000] efi: mem109: type=3, attr=0xf, range=[0x00000000dbf87000-0x00000000dbf99000) (0MB)
[ 0.000000] efi: mem110: type=4, attr=0xf, range=[0x00000000dbf99000-0x00000000dc000000) (0MB)
[ 0.000000] efi: mem111: type=7, attr=0xf, range=[0x0000000100000000-0x0000000420000000) (12800MB)
[ 0.000000] efi: mem112: type=11, attr=0x8000000000000001, range=[0x00000000f0000000-0x00000000f8000000) (128MB)
[ 0.000000] efi: mem113: type=11, attr=0x8000000000000001, range=[0x00000000fed1c000-0x00000000fed20000) (0MB)
[ 0.000000] efi: mem114: type=11, attr=0x8000000000000001, range=[0x00000000ff000000-0x0000000100000000) (16MB)
[ 0.000000] SMBIOS 2.7 present.
[ 0.000000] e820: last_pfn = 0x420000 max_arch_pfn = 0x400000000
[ 0.000000] x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106
[ 0.000000] e820: last_pfn = 0xdc000 max_arch_pfn = 0x400000000
[ 0.000000] found SMP MP-table at [mem 0x000f4bc0-0x000f4bcf] mapped at [ffff8800000f4bc0]
[ 0.000000] Using GB pages for direct mapping
[ 0.000000] init_memory_mapping: [mem 0x00000000-0x000fffff]
[ 0.000000] init_memory_mapping: [mem 0x41fe00000-0x41fffffff]
[ 0.000000] init_memory_mapping: [mem 0x41c000000-0x41fdfffff]
[ 0.000000] init_memory_mapping: [mem 0x400000000-0x41bffffff]
[ 0.000000] init_memory_mapping: [mem 0x00100000-0xdb41dfff]
[ 0.000000] init_memory_mapping: [mem 0xdbaf5000-0xdbaf5fff]
[ 0.000000] init_memory_mapping: [mem 0xdbb7c000-0xdbffffff]
[ 0.000000] init_memory_mapping: [mem 0x100000000-0x3ffffffff]
[ 0.000000] RAMDISK: [mem 0x3e1b0000-0x3e982fff]
[ 0.000000] ACPI: Early table checksum verification disabled
[ 0.000000] ACPI: RSDP 0x00000000DB752000 000024 (v02 HPQOEM)
[ 0.000000] ACPI: XSDT 0x00000000DB752088 00008C (v01 HPQOEM SLIC-WKS 01072009 AMI 00010013)
[ 0.000000] ACPI: FACP 0x00000000DB759590 00010C (v05 HPQOEM SLIC-WKS 01072009 AMI 00010013)
[ 0.000000] ------------[ cut here ]------------
[ 0.000000] WARNING: CPU: 0 PID: 0 at mm/early_ioremap.c:116 __early_ioremap+0x90/0x1c4()
[ 0.000000] __early_ioremap(ed00c800, 00000c80) not found slot
[ 0.000000] Modules linked in:
[ 0.000000] CPU: 0 PID: 0 Comm: swapper Not tainted 3.17.0-rc1+ #204
[ 0.000000] Hardware name: Hewlett-Packard HP Z420 Workstation/1589, BIOS J61 v03.15 05/09/2013
[ 0.000000] 0000000000000000 ffffffff8173b970 ffffffff814bb919 ffffffff8173b9b8
[ 0.000000] ffffffff8173b9a8 ffffffff810638c9 ffffffff8184ee81 ffffffffff538000
[ 0.000000] 0000000000000c80 0000000000000003 0000000000000c80 ffffffff8173ba08
[ 0.000000] Call Trace:
[ 0.000000] [<ffffffff814bb919>] dump_stack+0x4e/0x7a
[ 0.000000] [<ffffffff810638c9>] warn_slowpath_common+0x75/0x8e
[ 0.000000] [<ffffffff8184ee81>] ? __early_ioremap+0x90/0x1c4
[ 0.000000] [<ffffffff81063929>] warn_slowpath_fmt+0x47/0x49
[ 0.000000] [<ffffffff8184ee81>] __early_ioremap+0x90/0x1c4
[ 0.000000] [<ffffffff8124cf4d>] ? sprintf+0x46/0x48
[ 0.000000] [<ffffffff8184f169>] early_ioremap+0x13/0x15
[ 0.000000] [<ffffffff814ae4f0>] early_efi_map+0x24/0x26
[ 0.000000] [<ffffffff81060985>] early_efi_scroll_up+0x6d/0xc0
[ 0.000000] [<ffffffff81060b88>] early_efi_write+0x1b0/0x214
[ 0.000000] [<ffffffff8109ec3a>] call_console_drivers.constprop.21+0x73/0x7e
[ 0.000000] [<ffffffff8109fab4>] console_unlock+0x151/0x3b2
[ 0.000000] [<ffffffff810a01b4>] ? vprintk_emit+0x49f/0x532
[ 0.000000] [<ffffffff810a0236>] vprintk_emit+0x521/0x532
[ 0.000000] [<ffffffff8109fce6>] ? console_unlock+0x383/0x3b2
[ 0.000000] [<ffffffff814b6f01>] printk+0x4f/0x51
[ 0.000000] [<ffffffff81292f9c>] acpi_os_vprintf+0x2b/0x2d
[ 0.000000] [<ffffffff81292fe1>] acpi_os_printf+0x43/0x45
[ 0.000000] [<ffffffff812bc44c>] acpi_info+0x5c/0x63
[ 0.000000] [<ffffffff8183cdfa>] ? __acpi_map_table+0x13/0x18
[ 0.000000] [<ffffffff814afc88>] ? acpi_os_map_iomem+0x21/0x147
[ 0.000000] [<ffffffff812b7e59>] acpi_tb_print_table_header+0x177/0x186
[ 0.000000] [<ffffffff812b79da>] acpi_tb_install_table_with_override+0x4b/0x62
[ 0.000000] [<ffffffff812b7b80>] acpi_tb_install_standard_table+0xd9/0x215
[ 0.000000] [<ffffffff8184f169>] ? early_ioremap+0x13/0x15
[ 0.000000] [<ffffffff8183cdfa>] ? __acpi_map_table+0x13/0x18
[ 0.000000] [<ffffffff81857545>] acpi_tb_parse_root_table+0x16e/0x1b4
[ 0.000000] [<ffffffff818575e2>] acpi_initialize_tables+0x57/0x59
[ 0.000000] [<ffffffff8185591d>] acpi_table_init+0x50/0xce
[ 0.000000] [<ffffffff8183cea2>] acpi_boot_table_init+0x1e/0x85
[ 0.000000] [<ffffffff81834638>] setup_arch+0x9b7/0xcc4
[ 0.000000] [<ffffffff81830b3e>] start_kernel+0x94/0x42d
[ 0.000000] [<ffffffff81830120>] ? early_idt_handlers+0x120/0x120
[ 0.000000] [<ffffffff818304a2>] x86_64_start_reservations+0x2a/0x2c
[ 0.000000] [<ffffffff81830597>] x86_64_start_kernel+0xf3/0x100
[ 0.000000] ---[ end trace 48732c7db414b8fe ]---
[ 0.000000] ------------[ cut here ]------------
[ 0.000000] WARNING: CPU: 0 PID: 0 at mm/early_ioremap.c:116 __early_ioremap+0x90/0x1c4()
[ 0.000000] __early_ioremap(ed00c800, 00000c80) not found slot
[ 0.000000] Modules linked in:
[ 0.000000] CPU: 0 PID: 0 Comm: swapper Tainted: G W 3.17.0-rc1+ #204
[ 0.000000] Hardware name: Hewlett-Packard HP Z420 Workstation/1589, BIOS J61 v03.15 05/09/2013
[ 0.000000] 0000000000000000 ffffffff8173b970 ffffffff814bb919 ffffffff8173b9b8
[ 0.000000] ffffffff8173b9a8 ffffffff810638c9 ffffffff8184ee81 ffffffffff538000
[ 0.000000] 0000000000000c80 0000000000000003 0000000000000c80 ffffffff8173ba08
[ 0.000000] Call Trace:
[ 0.000000] [<ffffffff814bb919>] dump_stack+0x4e/0x7a
[ 0.000000] [<ffffffff810638c9>] warn_slowpath_common+0x75/0x8e
[ 0.000000] [<ffffffff8184ee81>] ? __early_ioremap+0x90/0x1c4
[ 0.000000] [<ffffffff81063929>] warn_slowpath_fmt+0x47/0x49
[ 0.000000] [<ffffffff8184ee81>] __early_ioremap+0x90/0x1c4
[ 0.000000] [<ffffffff8184f169>] early_ioremap+0x13/0x15
[ 0.000000] [<ffffffff814ae4f0>] early_efi_map+0x24/0x26
[ 0.000000] [<ffffffff81060985>] early_efi_scroll_up+0x6d/0xc0
[ 0.000000] [<ffffffff81060b88>] early_efi_write+0x1b0/0x214
[ 0.000000] [<ffffffff8109ec3a>] call_console_drivers.constprop.21+0x73/0x7e
[ 0.000000] [<ffffffff8109fb5d>] console_unlock+0x1fa/0x3b2
[ 0.000000] [<ffffffff810a0236>] vprintk_emit+0x521/0x532
[ 0.000000] [<ffffffff8109fce6>] ? console_unlock+0x383/0x3b2
[ 0.000000] [<ffffffff814b6f01>] printk+0x4f/0x51
[ 0.000000] [<ffffffff81292f9c>] acpi_os_vprintf+0x2b/0x2d
[ 0.000000] [<ffffffff81292fe1>] acpi_os_printf+0x43/0x45
[ 0.000000] [<ffffffff812bc44c>] acpi_info+0x5c/0x63
[ 0.000000] [<ffffffff8183cdfa>] ? __acpi_map_table+0x13/0x18
[ 0.000000] [<ffffffff814afc88>] ? acpi_os_map_iomem+0x21/0x147
[ 0.000000] [<ffffffff812b7e59>] acpi_tb_print_table_header+0x177/0x186
[ 0.000000] [<ffffffff812b79da>] acpi_tb_install_table_with_override+0x4b/0x62
[ 0.000000] [<ffffffff812b7b80>] acpi_tb_install_standard_table+0xd9/0x215
[ 0.000000] [<ffffffff8184f169>] ? early_ioremap+0x13/0x15
[ 0.000000] [<ffffffff8183cdfa>] ? __acpi_map_table+0x13/0x18
[ 0.000000] [<ffffffff81857545>] acpi_tb_parse_root_table+0x16e/0x1b4
[ 0.000000] [<ffffffff818575e2>] acpi_initialize_tables+0x57/0x59
[ 0.000000] [<ffffffff8185591d>] acpi_table_init+0x50/0xce
[ 0.000000] [<ffffffff8183cea2>] acpi_boot_table_init+0x1e/0x85
[ 0.000000] [<ffffffff81834638>] setup_arch+0x9b7/0xcc4
[ 0.000000] [<ffffffff81830b3e>] start_kernel+0x94/0x42d
[ 0.000000] [<ffffffff81830120>] ? early_idt_handlers+0x120/0x120
[ 0.000000] [<ffffffff818304a2>] x86_64_start_reservations+0x2a/0x2c
** 7 printk messages dropped ** [ 0.000000] Hardware name: Hewlett-Packard HP Z420 Workstation/1589, BIOS J61 v03.15 05/09/3
** 87 printk messages dropped ** [ 0.000000] Hardware name: Hewlett-Packard HP Z420 Workstation/1589, BIOS J61 v03.15 05/093
Thanks
Dave
^ permalink raw reply [flat|nested] 16+ messages in thread
* Re: kernel boot fail with efi earlyprintk (bisected)
2014-08-19 8:16 ` Dave Young
(?)
@ 2014-08-21 20:52 ` Matt Fleming
2014-08-22 1:43 ` [Devel] " Zheng, Lv
` (2 more replies)
-1 siblings, 3 replies; 16+ messages in thread
From: Matt Fleming @ 2014-08-21 20:52 UTC (permalink / raw)
To: Dave Young
Cc: lv.zheng, matt.fleming, linux-efi, linux-acpi, linux-kernel,
devel, lenb, rafael.j.wysocki, robert.moore
On Tue, 19 Aug, at 04:16:58PM, Dave Young wrote:
> Hi,
>
> 3.16 kernel boot fail with earlyprintk=efi on my laptop.
> It keeps scrolling at the bottom line of screen.
>
> Bisected, the first bad commit is below:
> commit 86dfc6f339886559d80ee0d4bd20fe5ee90450f0
> Author: Lv Zheng <lv.zheng@intel.com>
> Date: Fri Apr 4 12:38:57 2014 +0800
>
> ACPICA: Tables: Fix table checksums verification before installation.
>
>
> I did some debugging by enabling both serial and efi earlyprintk, below is
> some debug dmesg, seems early_ioremap fails in scroll up function due to
> no free slot, but I'm still not sure if the debug info is right or not.
Thanks Dave, your callstack seems to make sense.
Can you also enable early_ioremap_debug so that we can figure out where
all the FIXMAP slots are going?
--
Matt Fleming, Intel Open Source Technology Center
^ permalink raw reply [flat|nested] 16+ messages in thread
* RE: kernel boot fail with efi earlyprintk (bisected)
@ 2014-08-22 1:43 ` Zheng, Lv
0 siblings, 0 replies; 16+ messages in thread
From: Zheng, Lv @ 2014-08-22 1:43 UTC (permalink / raw)
To: Matt Fleming, Dave Young
Cc: Fleming, Matt, linux-efi, linux-acpi, linux-kernel, devel, lenb,
Wysocki, Rafael J, Moore, Robert
Hi,
There is only limited entries in the x86 early mapping which is implemented by the FIXMAP.
So this means for all __init call invoked for x86, if there was a early mapping in it, it should be unmapped before exiting the __init call.
Using this rule, all __init call implementers can make sure that before entering the __init call, the limited number of FIXMAP entries is enough.
The following bisected commit just increase early mapping times from 1 to 2 in ACPICA early table handling code.
The number of 2 is less than the number of available FIXMAP entries.
And ACPICA code has ensured that all mappings are correctly unmapped after the table initialization.
So we didn't break the rule.
We can offer a workaround in ACPICA to reduce mapping count from 2 to 1 using a global option.
But since this report sounds like that the root cause is earlyprintk=efi has broken the above rule and the existing issue is triggered by this cleanup.
So could someone check the earlyprintk=efi code first?
I think earlyprintk=efi should either unmap the increased mapping or increase the number of FIXMAP entries in case earlyprintk=efi need additional early mappings.
Otherwise it will always be chances for earlyprintk=efi to break future code.
Thanks and best regards
-Lv
> From: Matt Fleming [mailto:matt@console-pimps.org]
> Sent: Friday, August 22, 2014 4:52 AM
>
> On Tue, 19 Aug, at 04:16:58PM, Dave Young wrote:
> > Hi,
> >
> > 3.16 kernel boot fail with earlyprintk=efi on my laptop.
> > It keeps scrolling at the bottom line of screen.
> >
> > Bisected, the first bad commit is below:
> > commit 86dfc6f339886559d80ee0d4bd20fe5ee90450f0
> > Author: Lv Zheng <lv.zheng@intel.com>
> > Date: Fri Apr 4 12:38:57 2014 +0800
> >
> > ACPICA: Tables: Fix table checksums verification before installation.
> >
> >
> > I did some debugging by enabling both serial and efi earlyprintk, below is
> > some debug dmesg, seems early_ioremap fails in scroll up function due to
> > no free slot, but I'm still not sure if the debug info is right or not.
>
> Thanks Dave, your callstack seems to make sense.
>
> Can you also enable early_ioremap_debug so that we can figure out where
> all the FIXMAP slots are going?
>
> --
> Matt Fleming, Intel Open Source Technology Center
^ permalink raw reply [flat|nested] 16+ messages in thread
* Re: [Devel] kernel boot fail with efi earlyprintk (bisected)
@ 2014-08-22 1:43 ` Zheng, Lv
0 siblings, 0 replies; 16+ messages in thread
From: Zheng, Lv @ 2014-08-22 1:43 UTC (permalink / raw)
To: devel
[-- Attachment #1: Type: text/plain, Size: 2329 bytes --]
Hi,
There is only limited entries in the x86 early mapping which is implemented by the FIXMAP.
So this means for all __init call invoked for x86, if there was a early mapping in it, it should be unmapped before exiting the __init call.
Using this rule, all __init call implementers can make sure that before entering the __init call, the limited number of FIXMAP entries is enough.
The following bisected commit just increase early mapping times from 1 to 2 in ACPICA early table handling code.
The number of 2 is less than the number of available FIXMAP entries.
And ACPICA code has ensured that all mappings are correctly unmapped after the table initialization.
So we didn't break the rule.
We can offer a workaround in ACPICA to reduce mapping count from 2 to 1 using a global option.
But since this report sounds like that the root cause is earlyprintk=efi has broken the above rule and the existing issue is triggered by this cleanup.
So could someone check the earlyprintk=efi code first?
I think earlyprintk=efi should either unmap the increased mapping or increase the number of FIXMAP entries in case earlyprintk=efi need additional early mappings.
Otherwise it will always be chances for earlyprintk=efi to break future code.
Thanks and best regards
-Lv
> From: Matt Fleming [mailto:matt(a)console-pimps.org]
> Sent: Friday, August 22, 2014 4:52 AM
>
> On Tue, 19 Aug, at 04:16:58PM, Dave Young wrote:
> > Hi,
> >
> > 3.16 kernel boot fail with earlyprintk=efi on my laptop.
> > It keeps scrolling at the bottom line of screen.
> >
> > Bisected, the first bad commit is below:
> > commit 86dfc6f339886559d80ee0d4bd20fe5ee90450f0
> > Author: Lv Zheng <lv.zheng(a)intel.com>
> > Date: Fri Apr 4 12:38:57 2014 +0800
> >
> > ACPICA: Tables: Fix table checksums verification before installation.
> >
> >
> > I did some debugging by enabling both serial and efi earlyprintk, below is
> > some debug dmesg, seems early_ioremap fails in scroll up function due to
> > no free slot, but I'm still not sure if the debug info is right or not.
>
> Thanks Dave, your callstack seems to make sense.
>
> Can you also enable early_ioremap_debug so that we can figure out where
> all the FIXMAP slots are going?
>
> --
> Matt Fleming, Intel Open Source Technology Center
^ permalink raw reply [flat|nested] 16+ messages in thread
* RE: kernel boot fail with efi earlyprintk (bisected)
@ 2014-08-22 5:55 ` Zheng, Lv
0 siblings, 0 replies; 16+ messages in thread
From: Zheng, Lv @ 2014-08-22 5:55 UTC (permalink / raw)
To: Matt Fleming, Dave Young
Cc: Fleming, Matt, linux-efi, linux-acpi, linux-kernel, devel, lenb,
Wysocki, Rafael J, Moore, Robert, Lv Zheng (zetalog@gmail.com)
Hi,
I checked the arch/x86/platform/efi/early_printk.c.
In early_efi_scroll_up(), 2 mapping entries will be used for the src/dst screen buffer.
In drivers/acpi/acpica/tbutils.c, we've improved the early table loading code in acpi_tb_parse_root_table().
We now need 2 mapping entries:
1. One mapping entry is used for RSDT table mapping. Each RSDT entry contains an address for another ACPI table.
2. For each entry in RSDP, we need another mapping entry to map the table to perform necessary check/override before installing it.
When acpi_tb_parse_root_table() prints something through EFI earlyprintk console, we'll have 4 mapping entries used.
The current 4 slots setting of early_ioremap() seems to be too small for such a use case.
I'm not 100% sure if this is the cause.
If it's the cause and we think both of the mappings are reasonable, we can simply increase the FIX_BITMAPS_SLOTS defined in arch/x86/include/asm/fixmap.h.
What do you think of this?
Thanks and best regards
-Lv
> From: Zheng, Lv
> Sent: Friday, August 22, 2014 9:43 AM
>
> Hi,
>
> There is only limited entries in the x86 early mapping which is implemented by the FIXMAP.
> So this means for all __init call invoked for x86, if there was a early mapping in it, it should be unmapped before exiting the __init call.
>
> Using this rule, all __init call implementers can make sure that before entering the __init call, the limited number of FIXMAP entries is
> enough.
>
> The following bisected commit just increase early mapping times from 1 to 2 in ACPICA early table handling code.
> The number of 2 is less than the number of available FIXMAP entries.
> And ACPICA code has ensured that all mappings are correctly unmapped after the table initialization.
> So we didn't break the rule.
>
> We can offer a workaround in ACPICA to reduce mapping count from 2 to 1 using a global option.
> But since this report sounds like that the root cause is earlyprintk=efi has broken the above rule and the existing issue is triggered by
> this cleanup.
> So could someone check the earlyprintk=efi code first?
> I think earlyprintk=efi should either unmap the increased mapping or increase the number of FIXMAP entries in case earlyprintk=efi
> need additional early mappings.
> Otherwise it will always be chances for earlyprintk=efi to break future code.
>
> Thanks and best regards
> -Lv
>
> > From: Matt Fleming [mailto:matt@console-pimps.org]
> > Sent: Friday, August 22, 2014 4:52 AM
> >
> > On Tue, 19 Aug, at 04:16:58PM, Dave Young wrote:
> > > Hi,
> > >
> > > 3.16 kernel boot fail with earlyprintk=efi on my laptop.
> > > It keeps scrolling at the bottom line of screen.
> > >
> > > Bisected, the first bad commit is below:
> > > commit 86dfc6f339886559d80ee0d4bd20fe5ee90450f0
> > > Author: Lv Zheng <lv.zheng@intel.com>
> > > Date: Fri Apr 4 12:38:57 2014 +0800
> > >
> > > ACPICA: Tables: Fix table checksums verification before installation.
> > >
> > >
> > > I did some debugging by enabling both serial and efi earlyprintk, below is
> > > some debug dmesg, seems early_ioremap fails in scroll up function due to
> > > no free slot, but I'm still not sure if the debug info is right or not.
> >
> > Thanks Dave, your callstack seems to make sense.
> >
> > Can you also enable early_ioremap_debug so that we can figure out where
> > all the FIXMAP slots are going?
> >
> > --
> > Matt Fleming, Intel Open Source Technology Center
^ permalink raw reply [flat|nested] 16+ messages in thread
* Re: [Devel] kernel boot fail with efi earlyprintk (bisected)
@ 2014-08-22 5:55 ` Zheng, Lv
0 siblings, 0 replies; 16+ messages in thread
From: Zheng, Lv @ 2014-08-22 5:55 UTC (permalink / raw)
To: devel
[-- Attachment #1: Type: text/plain, Size: 3508 bytes --]
Hi,
I checked the arch/x86/platform/efi/early_printk.c.
In early_efi_scroll_up(), 2 mapping entries will be used for the src/dst screen buffer.
In drivers/acpi/acpica/tbutils.c, we've improved the early table loading code in acpi_tb_parse_root_table().
We now need 2 mapping entries:
1. One mapping entry is used for RSDT table mapping. Each RSDT entry contains an address for another ACPI table.
2. For each entry in RSDP, we need another mapping entry to map the table to perform necessary check/override before installing it.
When acpi_tb_parse_root_table() prints something through EFI earlyprintk console, we'll have 4 mapping entries used.
The current 4 slots setting of early_ioremap() seems to be too small for such a use case.
I'm not 100% sure if this is the cause.
If it's the cause and we think both of the mappings are reasonable, we can simply increase the FIX_BITMAPS_SLOTS defined in arch/x86/include/asm/fixmap.h.
What do you think of this?
Thanks and best regards
-Lv
> From: Zheng, Lv
> Sent: Friday, August 22, 2014 9:43 AM
>
> Hi,
>
> There is only limited entries in the x86 early mapping which is implemented by the FIXMAP.
> So this means for all __init call invoked for x86, if there was a early mapping in it, it should be unmapped before exiting the __init call.
>
> Using this rule, all __init call implementers can make sure that before entering the __init call, the limited number of FIXMAP entries is
> enough.
>
> The following bisected commit just increase early mapping times from 1 to 2 in ACPICA early table handling code.
> The number of 2 is less than the number of available FIXMAP entries.
> And ACPICA code has ensured that all mappings are correctly unmapped after the table initialization.
> So we didn't break the rule.
>
> We can offer a workaround in ACPICA to reduce mapping count from 2 to 1 using a global option.
> But since this report sounds like that the root cause is earlyprintk=efi has broken the above rule and the existing issue is triggered by
> this cleanup.
> So could someone check the earlyprintk=efi code first?
> I think earlyprintk=efi should either unmap the increased mapping or increase the number of FIXMAP entries in case earlyprintk=efi
> need additional early mappings.
> Otherwise it will always be chances for earlyprintk=efi to break future code.
>
> Thanks and best regards
> -Lv
>
> > From: Matt Fleming [mailto:matt(a)console-pimps.org]
> > Sent: Friday, August 22, 2014 4:52 AM
> >
> > On Tue, 19 Aug, at 04:16:58PM, Dave Young wrote:
> > > Hi,
> > >
> > > 3.16 kernel boot fail with earlyprintk=efi on my laptop.
> > > It keeps scrolling at the bottom line of screen.
> > >
> > > Bisected, the first bad commit is below:
> > > commit 86dfc6f339886559d80ee0d4bd20fe5ee90450f0
> > > Author: Lv Zheng <lv.zheng(a)intel.com>
> > > Date: Fri Apr 4 12:38:57 2014 +0800
> > >
> > > ACPICA: Tables: Fix table checksums verification before installation.
> > >
> > >
> > > I did some debugging by enabling both serial and efi earlyprintk, below is
> > > some debug dmesg, seems early_ioremap fails in scroll up function due to
> > > no free slot, but I'm still not sure if the debug info is right or not.
> >
> > Thanks Dave, your callstack seems to make sense.
> >
> > Can you also enable early_ioremap_debug so that we can figure out where
> > all the FIXMAP slots are going?
> >
> > --
> > Matt Fleming, Intel Open Source Technology Center
^ permalink raw reply [flat|nested] 16+ messages in thread
* Re: kernel boot fail with efi earlyprintk (bisected)
2014-08-21 20:52 ` Matt Fleming
2014-08-22 1:43 ` [Devel] " Zheng, Lv
2014-08-22 5:55 ` [Devel] " Zheng, Lv
@ 2014-08-22 10:02 ` Dave Young
[not found] ` <20140822100258.GA1877-4/PLUo9XfK+sDdueE5tM26fLeoKvNuZc@public.gmane.org>
2 siblings, 1 reply; 16+ messages in thread
From: Dave Young @ 2014-08-22 10:02 UTC (permalink / raw)
To: Matt Fleming
Cc: lv.zheng, matt.fleming, linux-efi, linux-acpi, linux-kernel,
devel, lenb, rafael.j.wysocki, robert.moore
On 08/21/14 at 09:52pm, Matt Fleming wrote:
> On Tue, 19 Aug, at 04:16:58PM, Dave Young wrote:
> > Hi,
> >
> > 3.16 kernel boot fail with earlyprintk=efi on my laptop.
> > It keeps scrolling at the bottom line of screen.
> >
> > Bisected, the first bad commit is below:
> > commit 86dfc6f339886559d80ee0d4bd20fe5ee90450f0
> > Author: Lv Zheng <lv.zheng@intel.com>
> > Date: Fri Apr 4 12:38:57 2014 +0800
> >
> > ACPICA: Tables: Fix table checksums verification before installation.
> >
> >
> > I did some debugging by enabling both serial and efi earlyprintk, below is
> > some debug dmesg, seems early_ioremap fails in scroll up function due to
> > no free slot, but I'm still not sure if the debug info is right or not.
>
> Thanks Dave, your callstack seems to make sense.
>
> Can you also enable early_ioremap_debug so that we can figure out where
> all the FIXMAP slots are going?
With early_ioremap_debug enabled, there will be a lot of "dropped printk", so
I can not get any useful information.
Will try to do more debug.
Thanks
Dave
^ permalink raw reply [flat|nested] 16+ messages in thread
* Re: kernel boot fail with efi earlyprintk (bisected)
2014-08-22 5:55 ` [Devel] " Zheng, Lv
(?)
@ 2014-08-22 10:04 ` Dave Young
-1 siblings, 0 replies; 16+ messages in thread
From: Dave Young @ 2014-08-22 10:04 UTC (permalink / raw)
To: Zheng, Lv
Cc: Matt Fleming, Fleming, Matt, linux-efi, linux-acpi, linux-kernel,
devel, lenb, Wysocki, Rafael J, Moore, Robert,
Lv Zheng (zetalog@gmail.com)
On 08/22/14 at 05:55am, Zheng, Lv wrote:
> Hi,
>
> I checked the arch/x86/platform/efi/early_printk.c.
> In early_efi_scroll_up(), 2 mapping entries will be used for the src/dst screen buffer.
> In drivers/acpi/acpica/tbutils.c, we've improved the early table loading code in acpi_tb_parse_root_table().
> We now need 2 mapping entries:
> 1. One mapping entry is used for RSDT table mapping. Each RSDT entry contains an address for another ACPI table.
> 2. For each entry in RSDP, we need another mapping entry to map the table to perform necessary check/override before installing it.
>
> When acpi_tb_parse_root_table() prints something through EFI earlyprintk console, we'll have 4 mapping entries used.
> The current 4 slots setting of early_ioremap() seems to be too small for such a use case.
>
> I'm not 100% sure if this is the cause.
> If it's the cause and we think both of the mappings are reasonable, we can simply increase the FIX_BITMAPS_SLOTS defined in arch/x86/include/asm/fixmap.h.
Hmm, will give see if I can do more debug, I can try what you suggested.
Thanks
Dave
^ permalink raw reply [flat|nested] 16+ messages in thread
* Re: kernel boot fail with efi earlyprintk (bisected)
2014-08-22 10:02 ` Dave Young
@ 2014-08-25 6:07 ` Dave Young
0 siblings, 0 replies; 16+ messages in thread
From: Dave Young @ 2014-08-25 6:07 UTC (permalink / raw)
To: Matt Fleming
Cc: lv.zheng-ral2JQCrhuEAvxtiuMwx3w,
matt.fleming-ral2JQCrhuEAvxtiuMwx3w,
linux-efi-u79uwXL29TY76Z2rM5mHXA,
linux-acpi-u79uwXL29TY76Z2rM5mHXA,
linux-kernel-u79uwXL29TY76Z2rM5mHXA,
devel-E0kO6a4B6psdnm+yROfE0A, lenb-DgEjT+Ai2ygdnm+yROfE0A,
rafael.j.wysocki-ral2JQCrhuEAvxtiuMwx3w,
robert.moore-ral2JQCrhuEAvxtiuMwx3w
On 08/22/14 at 06:02pm, Dave Young wrote:
> On 08/21/14 at 09:52pm, Matt Fleming wrote:
> > On Tue, 19 Aug, at 04:16:58PM, Dave Young wrote:
> > > Hi,
> > >
> > > 3.16 kernel boot fail with earlyprintk=efi on my laptop.
> > > It keeps scrolling at the bottom line of screen.
> > >
> > > Bisected, the first bad commit is below:
> > > commit 86dfc6f339886559d80ee0d4bd20fe5ee90450f0
> > > Author: Lv Zheng <lv.zheng-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
> > > Date: Fri Apr 4 12:38:57 2014 +0800
> > >
> > > ACPICA: Tables: Fix table checksums verification before installation.
> > >
> > >
> > > I did some debugging by enabling both serial and efi earlyprintk, below is
> > > some debug dmesg, seems early_ioremap fails in scroll up function due to
> > > no free slot, but I'm still not sure if the debug info is right or not.
> >
> > Thanks Dave, your callstack seems to make sense.
> >
> > Can you also enable early_ioremap_debug so that we can figure out where
> > all the FIXMAP slots are going?
>
> With early_ioremap_debug enabled, there will be a lot of "dropped printk", so
> I can not get any useful information.
>
> Will try to do more debug.
early_ioremap_debug does not work because we are debugging early_printk but
early_ioremap_debug itself will print warning message at the same time.
Tried what Lv mentioned, increasing the early ioremap slots does help.
Thanks
Dave
^ permalink raw reply [flat|nested] 16+ messages in thread
* Re: kernel boot fail with efi earlyprintk (bisected)
@ 2014-08-25 6:07 ` Dave Young
0 siblings, 0 replies; 16+ messages in thread
From: Dave Young @ 2014-08-25 6:07 UTC (permalink / raw)
To: Matt Fleming
Cc: lv.zheng, matt.fleming, linux-efi, linux-acpi, linux-kernel,
devel, lenb, rafael.j.wysocki, robert.moore
On 08/22/14 at 06:02pm, Dave Young wrote:
> On 08/21/14 at 09:52pm, Matt Fleming wrote:
> > On Tue, 19 Aug, at 04:16:58PM, Dave Young wrote:
> > > Hi,
> > >
> > > 3.16 kernel boot fail with earlyprintk=efi on my laptop.
> > > It keeps scrolling at the bottom line of screen.
> > >
> > > Bisected, the first bad commit is below:
> > > commit 86dfc6f339886559d80ee0d4bd20fe5ee90450f0
> > > Author: Lv Zheng <lv.zheng@intel.com>
> > > Date: Fri Apr 4 12:38:57 2014 +0800
> > >
> > > ACPICA: Tables: Fix table checksums verification before installation.
> > >
> > >
> > > I did some debugging by enabling both serial and efi earlyprintk, below is
> > > some debug dmesg, seems early_ioremap fails in scroll up function due to
> > > no free slot, but I'm still not sure if the debug info is right or not.
> >
> > Thanks Dave, your callstack seems to make sense.
> >
> > Can you also enable early_ioremap_debug so that we can figure out where
> > all the FIXMAP slots are going?
>
> With early_ioremap_debug enabled, there will be a lot of "dropped printk", so
> I can not get any useful information.
>
> Will try to do more debug.
early_ioremap_debug does not work because we are debugging early_printk but
early_ioremap_debug itself will print warning message at the same time.
Tried what Lv mentioned, increasing the early ioremap slots does help.
Thanks
Dave
^ permalink raw reply [flat|nested] 16+ messages in thread
* RE: kernel boot fail with efi earlyprintk (bisected)
2014-08-25 6:07 ` Dave Young
(?)
@ 2014-08-25 6:34 ` Zheng, Lv
-1 siblings, 0 replies; 16+ messages in thread
From: Zheng, Lv @ 2014-08-25 6:34 UTC (permalink / raw)
To: Dave Young, Matt Fleming
Cc: Fleming, Matt, linux-efi-u79uwXL29TY76Z2rM5mHXA,
linux-acpi-u79uwXL29TY76Z2rM5mHXA,
linux-kernel-u79uwXL29TY76Z2rM5mHXA,
devel-E0kO6a4B6psdnm+yROfE0A, lenb-DgEjT+Ai2ygdnm+yROfE0A,
Wysocki, Rafael J, Moore, Robert
Hi,
> From: Dave Young [mailto:dyoung-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org]
> Sent: Monday, August 25, 2014 2:07 PM
> To: Matt Fleming
> Cc: Zheng, Lv; Fleming, Matt; linux-efi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org; linux-acpi-u79uwXL29TY76Z2rM5mHXA@public.gmane.org; linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org; devel-E0kO6a4B6psdnm+yROfE0A@public.gmane.org;
> lenb-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org; Wysocki, Rafael J; Moore, Robert
> Subject: Re: kernel boot fail with efi earlyprintk (bisected)
>
> On 08/22/14 at 06:02pm, Dave Young wrote:
> > On 08/21/14 at 09:52pm, Matt Fleming wrote:
> > > On Tue, 19 Aug, at 04:16:58PM, Dave Young wrote:
> > > > Hi,
> > > >
> > > > 3.16 kernel boot fail with earlyprintk=efi on my laptop.
> > > > It keeps scrolling at the bottom line of screen.
> > > >
> > > > Bisected, the first bad commit is below:
> > > > commit 86dfc6f339886559d80ee0d4bd20fe5ee90450f0
> > > > Author: Lv Zheng <lv.zheng-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
> > > > Date: Fri Apr 4 12:38:57 2014 +0800
> > > >
> > > > ACPICA: Tables: Fix table checksums verification before installation.
> > > >
> > > >
> > > > I did some debugging by enabling both serial and efi earlyprintk, below is
> > > > some debug dmesg, seems early_ioremap fails in scroll up function due to
> > > > no free slot, but I'm still not sure if the debug info is right or not.
> > >
> > > Thanks Dave, your callstack seems to make sense.
> > >
> > > Can you also enable early_ioremap_debug so that we can figure out where
> > > all the FIXMAP slots are going?
> >
> > With early_ioremap_debug enabled, there will be a lot of "dropped printk", so
> > I can not get any useful information.
> >
> > Will try to do more debug.
>
> early_ioremap_debug does not work because we are debugging early_printk but
> early_ioremap_debug itself will print warning message at the same time.
>
> Tried what Lv mentioned, increasing the early ioremap slots does help.
Could you send a tested patch to linux-acpi-u79uwXL29TY6noJ6QQ2T4w@public.gmane.org for this?
I think the number of early mapping slots need to be increased by 1 because of this case.
Thanks and best regards
-Lv
^ permalink raw reply [flat|nested] 16+ messages in thread
* RE: kernel boot fail with efi earlyprintk (bisected)
@ 2014-08-25 6:34 ` Zheng, Lv
0 siblings, 0 replies; 16+ messages in thread
From: Zheng, Lv @ 2014-08-25 6:34 UTC (permalink / raw)
To: Dave Young, Matt Fleming
Cc: Fleming, Matt, linux-efi, linux-acpi, linux-kernel, devel, lenb,
Wysocki, Rafael J, Moore, Robert
Hi,
> From: Dave Young [mailto:dyoung@redhat.com]
> Sent: Monday, August 25, 2014 2:07 PM
> To: Matt Fleming
> Cc: Zheng, Lv; Fleming, Matt; linux-efi@vger.kernel.org; linux-acpi@vger.kernel.org; linux-kernel@vger.kernel.org; devel@acpica.org;
> lenb@kernel.org; Wysocki, Rafael J; Moore, Robert
> Subject: Re: kernel boot fail with efi earlyprintk (bisected)
>
> On 08/22/14 at 06:02pm, Dave Young wrote:
> > On 08/21/14 at 09:52pm, Matt Fleming wrote:
> > > On Tue, 19 Aug, at 04:16:58PM, Dave Young wrote:
> > > > Hi,
> > > >
> > > > 3.16 kernel boot fail with earlyprintk=efi on my laptop.
> > > > It keeps scrolling at the bottom line of screen.
> > > >
> > > > Bisected, the first bad commit is below:
> > > > commit 86dfc6f339886559d80ee0d4bd20fe5ee90450f0
> > > > Author: Lv Zheng <lv.zheng@intel.com>
> > > > Date: Fri Apr 4 12:38:57 2014 +0800
> > > >
> > > > ACPICA: Tables: Fix table checksums verification before installation.
> > > >
> > > >
> > > > I did some debugging by enabling both serial and efi earlyprintk, below is
> > > > some debug dmesg, seems early_ioremap fails in scroll up function due to
> > > > no free slot, but I'm still not sure if the debug info is right or not.
> > >
> > > Thanks Dave, your callstack seems to make sense.
> > >
> > > Can you also enable early_ioremap_debug so that we can figure out where
> > > all the FIXMAP slots are going?
> >
> > With early_ioremap_debug enabled, there will be a lot of "dropped printk", so
> > I can not get any useful information.
> >
> > Will try to do more debug.
>
> early_ioremap_debug does not work because we are debugging early_printk but
> early_ioremap_debug itself will print warning message at the same time.
>
> Tried what Lv mentioned, increasing the early ioremap slots does help.
Could you send a tested patch to linux-acpi@vger.kermel.org for this?
I think the number of early mapping slots need to be increased by 1 because of this case.
Thanks and best regards
-Lv
^ permalink raw reply [flat|nested] 16+ messages in thread
* Re: [Devel] kernel boot fail with efi earlyprintk (bisected)
@ 2014-08-25 6:34 ` Zheng, Lv
0 siblings, 0 replies; 16+ messages in thread
From: Zheng, Lv @ 2014-08-25 6:34 UTC (permalink / raw)
To: devel
[-- Attachment #1: Type: text/plain, Size: 2040 bytes --]
Hi,
> From: Dave Young [mailto:dyoung(a)redhat.com]
> Sent: Monday, August 25, 2014 2:07 PM
> To: Matt Fleming
> Cc: Zheng, Lv; Fleming, Matt; linux-efi(a)vger.kernel.org; linux-acpi(a)vger.kernel.org; linux-kernel(a)vger.kernel.org; devel(a)acpica.org;
> lenb(a)kernel.org; Wysocki, Rafael J; Moore, Robert
> Subject: Re: kernel boot fail with efi earlyprintk (bisected)
>
> On 08/22/14 at 06:02pm, Dave Young wrote:
> > On 08/21/14 at 09:52pm, Matt Fleming wrote:
> > > On Tue, 19 Aug, at 04:16:58PM, Dave Young wrote:
> > > > Hi,
> > > >
> > > > 3.16 kernel boot fail with earlyprintk=efi on my laptop.
> > > > It keeps scrolling at the bottom line of screen.
> > > >
> > > > Bisected, the first bad commit is below:
> > > > commit 86dfc6f339886559d80ee0d4bd20fe5ee90450f0
> > > > Author: Lv Zheng <lv.zheng(a)intel.com>
> > > > Date: Fri Apr 4 12:38:57 2014 +0800
> > > >
> > > > ACPICA: Tables: Fix table checksums verification before installation.
> > > >
> > > >
> > > > I did some debugging by enabling both serial and efi earlyprintk, below is
> > > > some debug dmesg, seems early_ioremap fails in scroll up function due to
> > > > no free slot, but I'm still not sure if the debug info is right or not.
> > >
> > > Thanks Dave, your callstack seems to make sense.
> > >
> > > Can you also enable early_ioremap_debug so that we can figure out where
> > > all the FIXMAP slots are going?
> >
> > With early_ioremap_debug enabled, there will be a lot of "dropped printk", so
> > I can not get any useful information.
> >
> > Will try to do more debug.
>
> early_ioremap_debug does not work because we are debugging early_printk but
> early_ioremap_debug itself will print warning message at the same time.
>
> Tried what Lv mentioned, increasing the early ioremap slots does help.
Could you send a tested patch to linux-acpi(a)vger.kermel.org for this?
I think the number of early mapping slots need to be increased by 1 because of this case.
Thanks and best regards
-Lv
^ permalink raw reply [flat|nested] 16+ messages in thread
* Re: kernel boot fail with efi earlyprintk (bisected)
2014-08-25 6:34 ` Zheng, Lv
(?)
(?)
@ 2014-08-25 9:06 ` Dave Young
2014-08-25 11:16 ` Matt Fleming
-1 siblings, 1 reply; 16+ messages in thread
From: Dave Young @ 2014-08-25 9:06 UTC (permalink / raw)
To: Zheng, Lv
Cc: Matt Fleming, Fleming, Matt, linux-efi, linux-acpi, linux-kernel,
devel, lenb, Wysocki, Rafael J, Moore, Robert
On 08/25/14 at 06:34am, Zheng, Lv wrote:
> Hi,
>
> > From: Dave Young [mailto:dyoung@redhat.com]
> > Sent: Monday, August 25, 2014 2:07 PM
> > To: Matt Fleming
> > Cc: Zheng, Lv; Fleming, Matt; linux-efi@vger.kernel.org; linux-acpi@vger.kernel.org; linux-kernel@vger.kernel.org; devel@acpica.org;
> > lenb@kernel.org; Wysocki, Rafael J; Moore, Robert
> > Subject: Re: kernel boot fail with efi earlyprintk (bisected)
> >
> > On 08/22/14 at 06:02pm, Dave Young wrote:
> > > On 08/21/14 at 09:52pm, Matt Fleming wrote:
> > > > On Tue, 19 Aug, at 04:16:58PM, Dave Young wrote:
> > > > > Hi,
> > > > >
> > > > > 3.16 kernel boot fail with earlyprintk=efi on my laptop.
> > > > > It keeps scrolling at the bottom line of screen.
> > > > >
> > > > > Bisected, the first bad commit is below:
> > > > > commit 86dfc6f339886559d80ee0d4bd20fe5ee90450f0
> > > > > Author: Lv Zheng <lv.zheng@intel.com>
> > > > > Date: Fri Apr 4 12:38:57 2014 +0800
> > > > >
> > > > > ACPICA: Tables: Fix table checksums verification before installation.
> > > > >
> > > > >
> > > > > I did some debugging by enabling both serial and efi earlyprintk, below is
> > > > > some debug dmesg, seems early_ioremap fails in scroll up function due to
> > > > > no free slot, but I'm still not sure if the debug info is right or not.
> > > >
> > > > Thanks Dave, your callstack seems to make sense.
> > > >
> > > > Can you also enable early_ioremap_debug so that we can figure out where
> > > > all the FIXMAP slots are going?
> > >
> > > With early_ioremap_debug enabled, there will be a lot of "dropped printk", so
> > > I can not get any useful information.
> > >
> > > Will try to do more debug.
> >
> > early_ioremap_debug does not work because we are debugging early_printk but
> > early_ioremap_debug itself will print warning message at the same time.
> >
> > Tried what Lv mentioned, increasing the early ioremap slots does help.
>
> Could you send a tested patch to linux-acpi@vger.kermel.org for this?
> I think the number of early mapping slots need to be increased by 1 because of this case.
Problem is I do not understand the implementation detail yet.
I did below changes:
Original values:
#define NR_FIX_BTMAPS 64
#define FIX_BTMAPS_SLOTS 4
-> new values tested:
#define NR_FIX_BTMAPS 32
#define FIX_BTMAPS_SLOTS 8
There's below comments
/*
* 256 temporary boot-time mappings, used by early_ioremap(),
* before ioremap() is functional.
*
* If necessary we round it up to the next 256 pages boundary so
* that we can have a single pgd entry and a single pte table:
*/
So seems increase it to 64 * 8 = 512 should be ok. If it's fine I can test again
and post a patch.
Thanks
Dave
^ permalink raw reply [flat|nested] 16+ messages in thread
* Re: kernel boot fail with efi earlyprintk (bisected)
2014-08-25 9:06 ` Dave Young
@ 2014-08-25 11:16 ` Matt Fleming
0 siblings, 0 replies; 16+ messages in thread
From: Matt Fleming @ 2014-08-25 11:16 UTC (permalink / raw)
To: Dave Young
Cc: Zheng, Lv, Fleming, Matt, linux-efi, linux-acpi, linux-kernel,
devel, lenb, Wysocki, Rafael J, Moore, Robert
On Mon, 25 Aug, at 05:06:19PM, Dave Young wrote:
>
> Problem is I do not understand the implementation detail yet.
>
> I did below changes:
>
> Original values:
> #define NR_FIX_BTMAPS 64
> #define FIX_BTMAPS_SLOTS 4
>
> -> new values tested:
> #define NR_FIX_BTMAPS 32
> #define FIX_BTMAPS_SLOTS 8
>
>
> There's below comments
> /*
> * 256 temporary boot-time mappings, used by early_ioremap(),
> * before ioremap() is functional.
> *
> * If necessary we round it up to the next 256 pages boundary so
> * that we can have a single pgd entry and a single pte table:
> */
>
> So seems increase it to 64 * 8 = 512 should be ok. If it's fine I can test again
> and post a patch.
Make sure you include the x86 maintainers on Cc if you change these
values.
--
Matt Fleming, Intel Open Source Technology Center
^ permalink raw reply [flat|nested] 16+ messages in thread
end of thread, other threads:[~2014-08-25 11:16 UTC | newest]
Thread overview: 16+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2014-08-19 8:16 kernel boot fail with efi earlyprintk (bisected) Dave Young
2014-08-19 8:16 ` Dave Young
2014-08-21 20:52 ` Matt Fleming
2014-08-22 1:43 ` Zheng, Lv
2014-08-22 1:43 ` [Devel] " Zheng, Lv
2014-08-22 5:55 ` Zheng, Lv
2014-08-22 5:55 ` [Devel] " Zheng, Lv
2014-08-22 10:04 ` Dave Young
2014-08-22 10:02 ` Dave Young
[not found] ` <20140822100258.GA1877-4/PLUo9XfK+sDdueE5tM26fLeoKvNuZc@public.gmane.org>
2014-08-25 6:07 ` Dave Young
2014-08-25 6:07 ` Dave Young
[not found] ` <20140825060713.GA4011-4/PLUo9XfK+sDdueE5tM26fLeoKvNuZc@public.gmane.org>
2014-08-25 6:34 ` Zheng, Lv
2014-08-25 6:34 ` [Devel] " Zheng, Lv
2014-08-25 6:34 ` Zheng, Lv
2014-08-25 9:06 ` Dave Young
2014-08-25 11:16 ` Matt Fleming
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