Package: src:linux Version: 3.14.15-2 Severity: important Tags: patch Dear Maintainer,
The regular 3.14-2 kernel from Debian doesn't see the full 1 Gb memory. Internet searches seem to indicate the same problem plagues the TS-421 as well. Only recently Qnap started creating ARM devices with 1 Gb memory, so this starts happening now. I posted a message on the linux-kernel mailing list (subject 'ARM kirkwood: 1 Gb memory 25% unusable due to vmalloc region overlap') and Russell King replied that CONFIG_HIGHMEM=y would fix the issue. Boot messages before, without CONFIG_HIGHMEM=y: [ 0.000000] Booting Linux on physical CPU 0x0 [ 0.000000] Initializing cgroup subsys cpuset [ 0.000000] Initializing cgroup subsys cpu [ 0.000000] Initializing cgroup subsys cpuacct [ 0.000000] Linux version 3.14-2-kirkwood (debian-ker...@lists.debian.org) (gcc version 4.8.3 (Debian 4.8.3-7) ) #1 Debian 3.14.15-2 (2014-08-09) [ 0.000000] CPU: Feroceon 88FR131 [56251311] revision 1 (ARMv5TE), cr=00053977 [ 0.000000] CPU: VIVT data cache, VIVT instruction cache [ 0.000000] Machine: QNAP TS-119/TS-219 [ 0.000000] Ignoring unrecognised tag 0x41000403 [ 0.000000] Truncating RAM at 20000000-3fffffff to -2f7fffff (vmalloc region overlap). This is where it happens ^^^^^^^^^^^^^ [ 0.000000] Memory policy: Data cache writeback [ 0.000000] On node 0 totalpages: 194560 [ 0.000000] free_area_init_node: node 0, pgdat c05af874, node_mem_map ef20b000 [ 0.000000] DMA zone: 1520 pages used for memmap [ 0.000000] DMA zone: 0 pages reserved [ 0.000000] DMA zone: 194560 pages, LIFO batch:31 [ 0.000000] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768 [ 0.000000] pcpu-alloc: [0] 0 [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 193040 [ 0.000000] Kernel command line: console=ttyS0,115200 root=/dev/ram initrd=0xa00000,0x900000 ramdisk=34816 [ 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] Memory: 755820K/778240K available (3869K kernel code, 352K rwdata, 1412K rodata, 202K init, 417K bss, 22420K reserved) [ 0.000000] Virtual kernel memory layout: [ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB) [ 0.000000] fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB) [ 0.000000] vmalloc : 0xf0000000 - 0xff000000 ( 240 MB) [ 0.000000] lowmem : 0xc0000000 - 0xef800000 ( 760 MB) [ 0.000000] modules : 0xbf000000 - 0xc0000000 ( 16 MB) [ 0.000000] .text : 0xc0008000 - 0xc053097c (5283 kB) [ 0.000000] .init : 0xc0531000 - 0xc0563b34 ( 203 kB) [ 0.000000] .data : 0xc0564000 - 0xc05bc128 ( 353 kB) [ 0.000000] .bss : 0xc05bc128 - 0xc06246c4 ( 418 kB) [ 0.000000] NR_IRQS:114 As you can see, only 755820K instead of 1 Gb is usable. Boot messages after recompiling the Debian 3.14-2 source with CONFIG_HIGHMEM=y: [ 0.000000] Booting Linux on physical CPU 0x0 [ 0.000000] Initializing cgroup subsys cpuset [ 0.000000] Initializing cgroup subsys cpu [ 0.000000] Initializing cgroup subsys cpuacct [ 0.000000] Linux version 3.14.15-kirkwood (root@qnap) (gcc version 4.9.1 (Debian 4.9.1-12) ) #1 Sun Sep 7 12:36:56 CEST 2014 [ 0.000000] CPU: Feroceon 88FR131 [56251311] revision 1 (ARMv5TE), cr=00053977 [ 0.000000] CPU: VIVT data cache, VIVT instruction cache [ 0.000000] Machine: QNAP TS-119/TS-219 [ 0.000000] Ignoring unrecognised tag 0x41000403 [ 0.000000] Memory policy: Data cache writeback [ 0.000000] On node 0 totalpages: 262144 [ 0.000000] free_area_init_node: node 0, pgdat c05a78b4, node_mem_map eeffa000 [ 0.000000] DMA zone: 1520 pages used for memmap [ 0.000000] DMA zone: 0 pages reserved [ 0.000000] DMA zone: 194560 pages, LIFO batch:31 [ 0.000000] HighMem zone: 528 pages used for memmap [ 0.000000] HighMem zone: 67584 pages, LIFO batch:15 [ 0.000000] pcpu-alloc: s0 r0 d32768 u32768 alloc=1*32768 [ 0.000000] pcpu-alloc: [0] 0 [ 0.000000] Built 1 zonelists in Zone order, mobility grouping on. Total pages: 260624 [ 0.000000] Kernel command line: console=ttyS0,115200 root=/dev/ram initrd=0xa00000,0x900000 ramdisk=34816 [ 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] Memory: 1024056K/1048576K available (3849K kernel code, 353K rwdata, 1396K rodata, 202K init, 428K bss, 24520K reserved, 270336K highmem) [ 0.000000] Virtual kernel memory layout: [ 0.000000] vector : 0xffff0000 - 0xffff1000 ( 4 kB) [ 0.000000] fixmap : 0xfff00000 - 0xfffe0000 ( 896 kB) [ 0.000000] vmalloc : 0xf0000000 - 0xff000000 ( 240 MB) [ 0.000000] lowmem : 0xc0000000 - 0xef800000 ( 760 MB) [ 0.000000] pkmap : 0xbfe00000 - 0xc0000000 ( 2 MB) [ 0.000000] modules : 0xbf000000 - 0xbfe00000 ( 14 MB) [ 0.000000] .text : 0xc0008000 - 0xc05278a4 (5247 kB) [ 0.000000] .init : 0xc0528000 - 0xc055aa1c ( 203 kB) [ 0.000000] .data : 0xc055c000 - 0xc05b4448 ( 354 kB) [ 0.000000] .bss : 0xc05b4448 - 0xc061f5e4 ( 429 kB) [ 0.000000] NR_IRQS:114 -- Package-specific info: ** Kernel log: boot messages should be attached ** Model information Hardware : QNAP TS-119/TS-219 Revision : 0000 ** PCI devices: <snip - not relevant> ** USB devices: <snip - not relevant> -- System Information: Debian Release: jessie/sid APT prefers testing APT policy: (500, 'testing') Architecture: armel (armv5tel) Kernel: Linux 3.14.15-kirkwood Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8) Shell: /bin/sh linked to /bin/dash Versions of packages linux-image-3.14-2-kirkwood depends on: ii debconf [debconf-2.0] 1.5.53 ii initramfs-tools [linux-initramfs-tool] 0.116 ii kmod 18-1 ii linux-base 3.5 ii module-init-tools 18-1 Versions of packages linux-image-3.14-2-kirkwood recommends: ii firmware-linux-free 3.3 ii uboot-mkimage 2012.04.01-2 Versions of packages linux-image-3.14-2-kirkwood suggests: pn debian-kernel-handbook <none> pn fdutils <none> pn linux-doc-3.14 <none> Versions of packages linux-image-3.14-2-kirkwood is related to: pn firmware-atheros <none> pn firmware-bnx2 <none> pn firmware-bnx2x <none> pn firmware-brcm80211 <none> pn firmware-intelwimax <none> pn firmware-ipw2x00 <none> pn firmware-ivtv <none> pn firmware-iwlwifi <none> pn firmware-libertas <none> pn firmware-linux <none> pn firmware-linux-nonfree <none> pn firmware-myricom <none> pn firmware-netxen <none> pn firmware-qlogic <none> pn firmware-ralink <none> pn firmware-realtek <none> pn xen-hypervisor <none> -- debconf information excluded -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". 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