Re: [PATCH] n_tty: use kmalloc() instead of vmalloc() to avoid crash on armada-xp
From: Stas Sergeev
Date: Wed Mar 11 2015 - 10:33:32 EST
11.03.2015 16:14, Russell King - ARM Linux ÐÐÑÐÑ:
> On Wed, Mar 11, 2015 at 01:44:57PM +0100, Gregory CLEMENT wrote:
>> Hi Stas,
>>
>> On 10/03/2015 17:54, Stas Sergeev wrote:
>>> Hello, the patch below is needed for a successful boot on armada-xp.
>>>
>> I am really surprised by this patch because I used the Armada XP based
>> board in a daily base and I never saw this issue.
> Can you provide some details about your board - does it have 8GB of
> memory, ranging from 0-0xf0000000, and 4G-8G ?
Yes, there should be 8G, here's the boot log from marvell kernel
that boots fine and works fine:
[ 0.000000] Booting Linux on physical CPU 0
[ 0.000000] Initializing cgroup subsys cpuset
[ 0.000000] Initializing cgroup subsys cpu
[ 0.000000] Linux version 3.2.58-1-armadaxp (root@host-010-100) (gcc
version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) ) #0 SMP Thu Dec 18 124
[ 0.000000] CPU: Marvell - PJ4Bv7 Processor [562f5842] revision 2
(ARMv7), cr=30c73c7d
[ 0.000000] CPU: PIPT / VIPT nonaliasing data cache, PIPT instruction
cache
[ 0.000000] Machine: Marvell Armada XP GP Board
[ 0.000000] Using UBoot passing parameters structure
[ 0.000000] bootconsole [earlycon0] enabled
[ 0.000000] Reserving training memory: base=0x (null) size=0x2800
[ 0.000000] Reserving training memory: base=0x80000000 size=0x2800
[ 0.000000] Reserving training memory: base=0xc0000000 size=0x2800
[ 0.000000] Reserving training memory: base=0xe0000000 size=0x2800
[ 0.000000] MEMBLOCK configuration:
[ 0.000000] memory size = 0x1f0000000
[ 0.000000] memory.cnt = 0x2
[ 0.000000] memory[0x0] [0x00000000000000-0x000000efffffff],
0xf0000000 bytes
[ 0.000000] memory[0x1] [0x00000100000000-0x000001ffffffff],
0x100000000 bytes
[ 0.000000] reserved.cnt = 0x7
[ 0.000000] reserved[0x0] [0x00000000000000-0x000000000027ff],
0x2800 bytes
[ 0.000000] reserved[0x1] [0x00000000003000-0x00000000007fff],
0x5000 bytes
[ 0.000000] reserved[0x2] [0x000000000081e0-0x000000009ef02f],
0x9e6e50 bytes
[ 0.000000] reserved[0x3] [0x00000001100040-0x0000000142fad3],
0x32fa94 bytes
[ 0.000000] reserved[0x4] [0x00000080000000-0x000000800027ff],
0x2800 bytes
[ 0.000000] reserved[0x5] [0x000000c0000000-0x000000c00027ff],
0x2800 bytes
[ 0.000000] reserved[0x6] [0x000000e0000000-0x000000e00027ff],
0x2800 bytes
[ 0.000000] Memory policy: ECC disabled, Data cache writealloc
[ 0.000000] SMP: init cpus
[ 0.000000] PERCPU: Embedded 7 pages/cpu @c5442000 s7104 r8192 d13376
u32768
[ 0.000000] Built 1 zonelists in Zone order, mobility grouping on.
Total pages: 2015232
[ 0.000000] Kernel command line: console=ttyS0,115200
earlyprintk=ttyS0 root=/dev/sda2 rw pm_disable memblock=debug
[ 0.000000] PID hash table entries: 4096 (order: 2, 16384 bytes)
[ 0.000000] Dentry cache hash table entries: 131072 (order: 7, 524288
bytes)
[ 0.000000] Inode-cache hash table entries: 65536 (order: 6, 262144
bytes)
[ 0.000000] allocated 33554432 bytes of page_cgroup
[ 0.000000] please try 'cgroup_disable=memory' option if you don't
want memory cgroups
[ 0.000000] Memory: 3840MB 4096MB = 7936MB total
[ 0.000000] Memory: 8015704k/8015704k available, 110760k reserved,
7299036K highmem
[ 0.000000] Virtual kernel memory layout:
[ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB)
[ 0.000000] fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB)
[ 0.000000] vmalloc : 0xf3000000 - 0xfa800000 ( 120 MB)
[ 0.000000] lowmem : 0xc0000000 - 0xf2800000 ( 808 MB)
[ 0.000000] pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB)
[ 0.000000] modules : 0xbf000000 - 0xbfe00000 ( 14 MB)
[ 0.000000] .text : 0xc0008000 - 0xc08b4000 (8880 kB)
[ 0.000000] .init : 0xc08b4000 - 0xc08fabc0 ( 283 kB)
[ 0.000000] .data : 0xc08fc000 - 0xc0948a20 ( 307 kB)
[ 0.000000] .bss : 0xc0948a44 - 0xc09ef030 ( 666 kB)
[ 0.000000] Hierarchical RCU implementation.
[ 0.000000] NR_IRQS:211
[ 0.000000] Initializing ArmadaXP SOC Timer 0
[ 0.000000] sched_clock: 32 bits at 25MHz, resolution 40ns, wraps
every 171798ms
[ 117.562527] Calibrating delay loop... 1594.16 BogoMIPS (lpj=7970816)
[ 117.655298] pid_max: default: 32768 minimum: 301
[ 117.660091] Security Framework initialized
[ 117.664285] AppArmor: AppArmor initialized
[ 117.668578] Mount-cache hash table entries: 512
[ 117.673594] Initializing cgroup subsys cpuacct
[ 117.678123] Initializing cgroup subsys memory
[ 117.682584] Initializing cgroup subsys devices
[ 117.687093] Initializing cgroup subsys freezer
[ 117.691601] Initializing cgroup subsys net_cls
[ 117.696117] Initializing cgroup subsys blkio
[ 117.700528] CPU: Testing write buffer coherency: ok
[ 117.705627] CPU0: thread -1, cpu 0, socket 0, mpidr 80000000
[ 117.711350] SMP: prepare CPUs (4 cores)
[ 117.715539] Setting Clocks for secondary CPUs
[ 117.720891] SMP: CPU 0 Waking up CPU 1
[ 117.732639] CPU1: Booted secondary processor
[ 117.772428] CPU1: thread -1, cpu 1, socket 0, mpidr 80000001
[ 117.772858] SMP: CPU 0 Waking up CPU 2
[ 117.794638] CPU2: Booted secondary processor
[ 117.832429] CPU2: thread -1, cpu 2, socket 0, mpidr 80000002
[ 117.832864] SMP: CPU 0 Waking up CPU 3
[ 117.857151] CPU3: Booted secondary processor
[ 117.892429] CPU3: thread -1, cpu 3, socket 0, mpidr 80000003
[ 117.892493] Brought up 4 CPUs
[ 117.905580] SMP: Total of 4 processors activated (6376.65 BogoMIPS).
[ 117.912745] devtmpfs: initialized
[ 117.921130] xor: measuring software checksum speed
[ 117.972401] arm4regs : 1544.800 MB/sec
[ 118.022399] 8regs : 1147.600 MB/sec
[ 118.072399] 32regs : 1472.000 MB/sec
[ 118.076648] xor: using function: arm4regs (1544.800 MB/sec)
[ 118.083158] print_constraints: dummy:
[ 118.087341] NET: Registered protocol family 16
[ 118.092028] ARMADA XP error handling module was loaded
[ 118.098986] Aurora: Working in ARMv7 mode
[ 118.103086] L0 cache Enabled
[ 118.106038] Speculative Prefetch Disabled
[ 118.110127] Aurora L2 Cache Enabled
[ 118.113963] Support IO coherency.
[ 118.220261]
[ 118.221830] Marvell Armada-XP RD-AXP-GP rev 1.0 Board - Soc:
MV78460 B0 LE
[ 118.229060] Detected Tclk 250000000, SysClk 800000000, FabricClk
800000000, PClk 1600000000
[ 118.237634] LSP version: linux-3.2.58-2014_T2.0
[ 118.242407] Marvell Armada-XP Unique Device ID: 00196621A784C374
(UniqeID_val0: A784C374, UniqeID_val1: 00196621)
[ 118.252880]
[ 118.255972] Register platform device: mv_neta_port_0
[ 118.261098] Register platform device: mv_neta_port_2
[ 118.266868] registered dev#0 asa ehci_marvell
[ 118.271569] Marvell USB EHCI Host controller #0: f20f4000
[ 118.277140] registered dev#1 asa ehci_marvell
[ 118.281838] Marvell USB EHCI Host controller #1: f2144e00
[ 118.287402] registered dev#2 asa ehci_marvell
[ 118.292100] Marvell USB EHCI Host controller #2: f2144c00
[ 118.310312] bio: create slab <bio-0> at 0
[ 118.482530] raid6: int32x1 182 MB/s
[ 118.652535] raid6: int32x2 281 MB/s
[ 118.822632] raid6: int32x4 265 MB/s
[ 118.992396] raid6: int32x8 309 MB/s
[ 118.996216] raid6: using algorithm int32x8 (309 MB/s)
[ 119.002219] vgaarb: loaded
[ 119.006888] SCSI subsystem initialized
[ 119.011362] usbcore: registered new interface driver usbfs
[ 119.017071] usbcore: registered new interface driver hub
[ 119.022564] usbcore: registered new device driver usb
[ 119.029036] NetLabel: Initializing
[ 119.032565] NetLabel: domain hash size = 128
[ 119.036985] NetLabel: protocols = UNLABELED CIPSOv4
[ 119.042032] NetLabel: unlabeled traffic allowed by default
[ 119.047954] Switching to clocksource axp_clocksource
[ 119.053160] FS-Cache: Loaded
[ 119.056149] AppArmor: AppArmor Filesystem Enabled
[ 119.062592] NET: Registered protocol family 2
[ 119.067119] IP route cache hash table entries: 32768 (order: 5,
131072 bytes)
[ 119.074573] TCP established hash table entries: 131072 (order: 8,
1048576 bytes)
[ 119.082855] TCP bind hash table entries: 65536 (order: 7, 524288 bytes)
[ 119.089918] TCP: Hash tables configured (established 131072 bind 65536)
[ 119.096594] TCP reno registered
[ 119.099808] UDP hash table entries: 512 (order: 2, 16384 bytes)
[ 119.105806] UDP-Lite hash table entries: 512 (order: 2, 16384 bytes)
[ 119.112374] NET: Registered protocol family 1
[ 119.116974] RPC: Registered named UNIX socket transport module.
[ 119.122951] RPC: Registered udp transport module.
[ 119.127726] RPC: Registered tcp transport module.
[ 119.132492] RPC: Registered tcp NFSv4.1 backchannel transport module.
[ 119.139102] Trying to unpack rootfs image as initramfs...
[ 119.257367] Freeing initrd memory: 3260K
[ 119.261366] PCI-E: Checking physical bus #0 (controller #8): Enabled
- Link UP
[ 119.268817] PCI-E: Checking physical bus #1 (controller #9): Enabled
- No Link
[ 119.276801] PCI: bus0: Fast back to back transfers disabled
[ 119.282644] pci 0000:00:00.0: BAR 2: assigned [mem
0xf3000000-0xf303ffff 64bit]
[ 119.290027] pci 0000:00:00.0: BAR 2: set to [mem
0xf3000000-0xf303ffff 64bit] (PCI address [0xf3000000-0xf303ffff])
[ 119.300509] pci 0000:00:00.0: BAR 0: assigned [mem
0xf3040000-0xf305ffff 64bit]
[ 119.307883] pci 0000:00:00.0: BAR 0: set to [mem
0xf3040000-0xf305ffff 64bit] (PCI address [0xf3040000-0xf305ffff])
[ 119.318367] pci 0000:00:00.0: BAR 6: assigned [mem
0xf3060000-0xf306ffff pref]
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/