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    SubjectRe: [REGRESSION] 2.6.25 on parisc - CPU 1 is stuck
    On Mon, Apr 21, 2008 at 03:31:13PM +0200, Domenico Andreoli wrote:
    > On Sun, Apr 20, 2008 at 11:00:29PM -0600, Grant Grundler wrote:
    > > On Mon, Apr 21, 2008 at 01:18:18AM +0200, Domenico Andreoli wrote:
    > > >
    > > > as soon as I booted my dual PA8600 with 2.6.25 I got 1 CPU less. The
    > > > only other kernel I successfully used on that box is Debian's 2.6.22-3.
    > >
    > > Sorry, I can't reproduce this on my j6000.
    > >
    > > But there are some differences:
    > > 1) I'm using gcc 4.2
    >
    > how do you build with gcc 4.2? if i try with make -j2 CC=gcc-4.2 build
    > fails almost immediately (yes, I have package gcc-4.2).

    You probably need to change the .config so CONFIG_64BIT is not set.

    _OR_ use the 64-bit compiler:
    make -j2 CC=hppa64-gnu-linux-gcc-4.2

    > > 2) I'm testing 32-bit kernels.
    >
    > indeeed disabling 64 bit support brings the cpu back

    Ok. So it's not likely to be a HW problem.

    >
    > > ...
    > > > model 9000/785/J5600
    > > > Total Memory: 3840 MB
    > >
    > > Is this really 4GB with IO Hole?
    > > The memory behind the IO Hole should be visible at a phys addr above 4GB.
    >
    > really don't know, please read the diff between the two boots. thank you.

    Sorry...that question was really targeting others on parisc-linux list.
    The diff will some noise in it because 64-bit has to "F-extend" all
    physical addresses to be 64-bit. (That's not quite the same as sign
    extension because of some wonkiness in 32->64 bit phys address aliasing.)

    thank,
    grant

    > --- dmesg.txt 2008-04-21 11:19:16.000000000 +0200
    > +++ dmesg2.txt 2008-04-21 15:27:46.000000000 +0200
    > @@ -1,6 +1,7 @@
    > -Linux version 2.6.22-3-parisc64-smp (Debian 2.6.22-6) (maks@debian.org) (gcc version 4.1.3 20071019 (prerelease) (Debian 4.1.2-17)) #2 SMP Mon Nov 12 21:04:20 CET 2007
    > +Linux version 2.6.25 (cavok@ska) (gcc version 4.1.3 20080308 (prerelease) (Debian 4.1.2-21)) #8 SMP Mon Apr 21 12:25:50 CES8
    > FP[0] enabled: Rev 1 Model 16
    > The 64-bit Kernel has started...
    > +console [ttyB0] enabled
    > Initialized PDC Console for debugging.
    > Determining PDC firmware type: System Map.
    > model 00005d10 00000491 00000000 00000002 77b406fc 100000f0 00000008 000000b2 000000b2
    > @@ -8,41 +9,28 @@
    > CPUID vers 17 rev 10 (0x0000022a)
    > capabilities 0x3
    > model 9000/785/J5600
    > -Memory Ranges:
    > - 0) Start 0x0000000000000000 End 0x00000000efffffff Size 3840 MB
    > - 1) Start 0x00000010f0000000 End 0x00000010ffffffff Size 256 MB
    > -Total Memory: 4096 MB
    > -initrd: 7fa75000-7ffee77e
    > -initrd: reserving 3fa75000-3ffee77e (mem_max 100000000)
    > -On node 0 totalpages: 983040
    > - Normal zone: 13440 pages used for memmap
    > - Normal zone: 0 pages reserved
    > - Normal zone: 969600 pages, LIFO batch:31
    > -On node 1 totalpages: 65536
    > - Normal zone: 896 pages used for memmap
    > - Normal zone: 0 pages reserved
    > - Normal zone: 64640 pages, LIFO batch:15
    > +Total Memory: 3840 MB
    > LCD display at fffffff0f05d0008,fffffff0f05d0000 registered
    > SMP: bootstrap CPU ID is 0
    > -Built 2 zonelists. Total pages: 1034240
    > -Kernel command line: root=/dev/sdb5 panic=60 HOME=/ console=ttyS0 TERM=vt102 palo_kernel=2/vmlinux.failsafe
    > +Built 1 zonelists in Zone order, mobility grouping on. Total pages: 969600
    > +Kernel command line: root=/dev/sdb5 panic=60 HOME=/ console=ttyS0 TERM=vt102 palo_kernel=2/vmlinux
    > PID hash table entries: 4096 (order: 12, 32768 bytes)
    > Console: colour dummy device 160x64
    > Dentry cache hash table entries: 524288 (order: 10, 4194304 bytes)
    > Inode-cache hash table entries: 262144 (order: 9, 2097152 bytes)
    > -Memory: 4110336k/4194304k available (3041k kernel code, 83172k reserved, 1302k data, 296k init)
    > +Memory: 3858944k/3932160k available (2925k kernel code, 72904k reserved, 1278k data, 236k init)
    > virtual kernel memory layout:
    > vmalloc : 0x0000000000008000 - 0x000000003f000000 (1007 MB)
    > - memory : 0x0000000040000000 - 0x0000001140000000 (69632 MB)
    > - .init : 0x0000000040608000 - 0x0000000040652000 ( 296 kB)
    > - .data : 0x00000000403f8500 - 0x000000004053e000 (1302 kB)
    > - .text : 0x0000000040100000 - 0x00000000403f8500 (3041 kB)
    > -Calibrating delay loop... 1101.82 BogoMIPS (lpj=2203648)
    > -Security Framework v1.0.0 initialized
    > -SELinux: Disabled at boot.
    > + memory : 0x0000000040000000 - 0x0000000130000000 (3840 MB)
    > + .init : 0x00000000405b4000 - 0x00000000405ef000 ( 236 kB)
    > + .data : 0x00000000403db720 - 0x000000004051b000 (1278 kB)
    > + .text : 0x0000000040100000 - 0x00000000403db720 (2925 kB)
    > +SLUB: Genslabs=12, HWalign=64, Order=0-1, MinObjects=4, CPUs=2, Nodes=1
    > +Security Framework initialized
    > Capability LSM initialized
    > Mount-cache hash table entries: 256
    > Brought up 1 CPUs
    > +net_namespace: 1008 bytes
    > NET: Registered protocol family 16
    > EISA bus registered
    > Searching for devices...
    > @@ -58,11 +46,9 @@
    > 9. Memory at 0xfffffffffed10200 [49] { 1, 0x0, 0x09e, 0x00009 }
    > Enabling regular chassis codes support v0.05
    > Releasing cpu 1 now, hpa=fffffffffffa2000
    > -FP[1] enabled: Rev 1 Model 16
    > -migration_cost=4000
    > +SMP: CPU:1 is stuck.
    > CPU(s): 2 x PA8600 (PCX-W+) at 552.000000 MHz
    > -Whole cache flush 177618 cycles, flushing 5578752 bytes 826963 cycles
    > -Setting cache flush threshold to 100000 (2 CPUs online)
    > +Setting cache flush threshold to fc880 (1 CPUs online)
    > SBA found Astro 2.1 at 0xfffffffffed00000
    > Elroy version TR2.1 (0x2) found at 0xfffffffffed30000
    > PCI: Enabled native mode for NS87415 (pif=0x8f)
    >
    > -----[ Domenico Andreoli, aka cavok
    > --[ http://www.dandreoli.com/gpgkey.asc
    > ---[ 3A0F 2F80 F79C 678A 8936 4FEE 0677 9033 A20E BC50
    > --
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