Tomasz Chmielewski
2008-Oct-14 15:08 UTC
[Xen-users] WARNING: at arch/x86/mm/ioremap.c:469 with 2.6.27?
I get the following (below) when starting a 2.6.27 domU kernel with Xen
3.2.1. What does it mean? Should I attach the .config? I didn''t have
this warning with 2.6.26.
Can it be that it shows up because of CONFIG_X86_VERBOSE_BOOTUP (was
added in 2.6.27 AFAIK).
Other than that, everything seems to work properly.
# xm create -c backup1
Using config file "/etc/xen/backup1".
Started domain backup1
Reserving virtual address space above 0xf57fe000
Linux version 2.6.27-1-xenU (root@backup1) (gcc version 4.2.3
(4.2.3-6mnb1)) #2 Tue Oct 14 11:26:51 CEST 2008
------------[ cut here ]------------
WARNING: at arch/x86/mm/ioremap.c:469 early_ioremap_init+0x150/0x216()
Modules linked in:
Pid: 0, comm: swapper Not tainted 2.6.27-1-xenU #2
[<c011aa57>] warn_on_slowpath+0x41/0x65
[<c010379d>] ? xen_pmd_val+0x8/0xa
[<c0110d90>] ? lookup_address+0x166/0x197
[<c0103611>] ? xen_mc_flush+0x102/0x139
[<c01041cc>] ? xen_set_pmd_hyper+0x61/0x6b
[<c02f07d2>] early_ioremap_init+0x150/0x216
[<c02eec99>] ? early_cpu_init+0x176/0x17e
[<c02ebdde>] setup_arch+0x2c/0x6fb
[<c01ce11e>] ? raw_console_write+0x1e/0x35
[<c02edee8>] ? __reserve_early+0xc4/0xcc
[<c011b408>] ? printk+0x15/0x17
[<c02e8793>] start_kernel+0x51/0x252
[<c02e8329>] i386_start_kernel+0x80/0x88
[<c02eb654>] xen_start_kernel+0x4f3/0x4fb
=======================
---[ end trace 4eaa2a86a8e2da22 ]---
pmd c0317d50 != c0317d58
fix_to_virt(FIX_BTMAP_BEGIN): f55fe000
fix_to_virt(FIX_BTMAP_END): f56fd000
FIX_BTMAP_END: 256
FIX_BTMAP_BEGIN: 511
BIOS-provided physical RAM map:
Xen: 0000000000000000 - 00000000000a0000 (usable)
Xen: 00000000000a0000 - 0000000000100000 (reserved)
Xen: 0000000000100000 - 0000000000338000 (usable)
Xen: 0000000000338000 - 0000000000601000 (reserved)
Xen: 0000000000601000 - 00000000b1800000 (usable)
last_pfn = 0xb1800 max_arch_pfn = 0x1000000
DMI not present or invalid.
2112MB HIGHMEM available.
727MB LOWMEM available.
mapped low ram: 0 - 2d7fe000
low ram: 00000000 - 2d7fe000
bootmap 00001000 - 00006b00
(5 early reservations) ==> bootmem [0000000000 - 002d7fe000]
#0 [0000000000 - 0000001000] BIOS data page ==> [0000000000 -
0000001000]
#1 [0000100000 - 0000337834] TEXT DATA BSS ==> [0000100000 -
0000337834]
#2 [0000601000 - 0000607000] INIT_PG_TABLE ==> [0000601000 -
0000607000]
#3 [0000607000 - 000076d000] PGTABLE ==> [0000607000 -
000076d000]
#4 [0000001000 - 0000007000] BOOTMAP ==> [0000001000 -
0000007000]
Zone PFN ranges:
DMA 0x00000000 -> 0x00001000
Normal 0x00001000 -> 0x0002d7fe
HighMem 0x0002d7fe -> 0x000b1800
Movable zone start PFN for each node
early_node_map[3] active PFN ranges
0: 0x00000000 -> 0x000000a0
0: 0x00000100 -> 0x00000338
0: 0x00000601 -> 0x000b1800
Xen: using vcpu_info placement
Allocating PCI resources starting at b8000000 (gap: b1800000:4e800000)
Built 1 zonelists in Zone order, mobility grouping on. Total pages:
720550
Kernel command line: root=/dev/xvda1 ro console=hvc 3
Enabling fast FPU save and restore... done.
Enabling unmasked SIMD FPU exception support... done.
Initializing CPU#0
PID hash table entries: 4096 (order: 12, 16384 bytes)
Detected 2925.998 MHz processor.
Console: colour dummy device 80x25
console [tty0] enabled
console [hvc0] enabled
Dentry cache hash table entries: 131072 (order: 7, 524288 bytes)
Inode-cache hash table entries: 65536 (order: 6, 262144 bytes)
Memory: 2876884k/2908160k available (1228k kernel code, 27284k reserved,
719k data, 160k init, 2162696k highmem)
virtual kernel memory layout:
fixmap : 0xf57eb000 - 0xf57fd000 ( 72 kB)
pkmap : 0xf5200000 - 0xf5400000 (2048 kB)
vmalloc : 0xee000000 - 0xf51fe000 ( 113 MB)
lowmem : 0xc0000000 - 0xed7fe000 ( 727 MB)
.init : 0xc02e8000 - 0xc0310000 ( 160 kB)
.data : 0xc02332ef - 0xc02e6ef0 ( 719 kB)
.text : 0xc0100000 - 0xc02332ef (1228 kB)
Checking if this processor honours the WP bit even in supervisor
mode...Ok.
SLUB: Genslabs=12, HWalign=128, Order=0-3, MinObjects=0, CPUs=1, Nodes=1
installing Xen timer for CPU 0
Calibrating delay loop (skipped), value calculated using timer
frequency.. 5851.99 BogoMIPS (lpj=29259980)
Mount-cache hash table entries: 512
CPU: Trace cache: 12K uops, L1 D cache: 16K
CPU: L2 cache: 256K
CPU: Intel(R) Celeron(R) CPU 2.93GHz stepping 09
Freeing SMP alternatives: 0k freed
net_namespace: 288 bytes
Booting paravirtualized kernel on Xen
Xen version: 3.2.1
Grant table initialized
NET: Registered protocol family 16
PCI: Fatal: No config space access function found
xen_balloon: Initialising balloon driver.
SCSI subsystem initialized
PCI: System does not support PCI
PCI: System does not support PCI
NET: Registered protocol family 2
IP route cache hash table entries: 32768 (order: 5, 131072 bytes)
TCP established hash table entries: 131072 (order: 8, 1048576 bytes)
TCP bind hash table entries: 65536 (order: 6, 262144 bytes)
TCP: Hash tables configured (established 131072 bind 65536)
TCP reno registered
NET: Registered protocol family 1
highmem bounce pool size: 64 pages
msgmni has been set to 1455
io scheduler noop registered
io scheduler anticipatory registered (default)
blkfront: xvda1: barriers enabled
Initialising Xen virtual ethernet driver.
i8042.c: No controller found.
mice: PS/2 mouse device common for all mice
cpuidle: using governor ladder
cpuidle: using governor menu
TCP cubic registered
NET: Registered protocol family 17
Using IPI Shortcut mode
XENBUS: Device with no driver: device/console/0
kjournald starting. Commit interval 5 seconds
EXT3-fs: mounted filesystem with ordered data mode.
VFS: Mounted root (ext3 filesystem) readonly.
Freeing unused kernel memory: 160k freed
INIT: version 2.86 booting
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