Re: [PATCH] x86, acpi: Handle all SRAT cpu entries even have cpu num limitation

Wu Fengguang
2010-11-15T01:22:21Z

On Mon, Nov 15, 2010 at 02:19:30AM +0800, Yinghai Lu wrote:
> On 11/14/2010 09:32 AM, Wu Fengguang wrote:
> > Hi,
> >
> > I just found another problem. When passing "mem=256" to 2.6.37-rc1,
> > it dies hard early (not able to print any boot log). With this patch
> > applied, it's a bit better: it shows a kernel panic, but still dies
> > hard (not able to reboot with "panic=10").
> >
>
> if you did use "mem=256", you should get panic.

Oops, "256" is accepted as 256 bytes..
Sorry for the noise! It boots OK with "mem=256M".

Thanks,
Fengguang

> early console in setup code
> Probing EDD (edd=off to disable)... ok
> early console in decompress_kernel
> decompress_kernel:
> input: [0x2431269-0x2e7fec6], output: 0x1000000, heap: [0x2e856c0-0x2e8c6bf]
>
> Decompressing Linux... Parsing ELF... done.
> Booting the kernel.
> [ 0.000000] bootconsole [uart0] enabled
> [ 0.000000] Kernel Layout:
> [ 0.000000] .text: [0x01000000-0x01ce0e48]
> [ 0.000000] .rodata: [0x01ce6000-0x0240ffff]
> [ 0.000000] .data: [0x02410000-0x025a50bf]
> [ 0.000000] .init: [0x025a7000-0x0286afff]
> [ 0.000000] .bss: [0x02875000-0x0348a6d7]
> [ 0.000000] .brk: [0x0348b000-0x034aafff]
> [ 0.000000] memblock_x86_reserve_range: [0x01000000-0x0348a6d7] TEXT DATA BSS
> [ 0.000000] memblock_x86_reserve_range: [0x7c59d000-0x7fffefff] RAMDISK
> [ 0.000000] memblock_x86_reserve_range: [0x0009fc00-0x000fffff] * BIOS reserved
> [ 0.000000] Initializing cgroup subsys cpuset
> [ 0.000000] Initializing cgroup subsys cpu
> [ 0.000000] Linux version 2.6.37-rc1-tip-yh-02102-g776a022-dirty (yhlu@linux-siqj.site) (gcc version 4.5.0 20100604 [gcc-4_5-branch revision 160292] (SUSE Linux) ) #276 SMP Sat Nov 13 15:34:15 PST 2010
> [ 0.000000] Command line: BOOT_IMAGE=linux debug apic=debug ramdisk_size=262144 root=/dev/ram0 rw ip=dhcp mem=256 console=uart8250,io,0x3f8,115200 initrd=initrd.img
> [ 0.000000] KERNEL supported cpus:
> [ 0.000000] Intel GenuineIntel
> [ 0.000000] AMD AuthenticAMD
> [ 0.000000] Centaur CentaurHauls
> [ 0.000000] BIOS-provided physical RAM map:
> [ 0.000000] BIOS-e820: [0x00000000000000-0x0000000009fbff] (usable)
> [ 0.000000] BIOS-e820: [0x0000000009fc00-0x0000000009ffff] (reserved)
> [ 0.000000] BIOS-e820: [0x000000000f0000-0x000000000fffff] (reserved)
> [ 0.000000] BIOS-e820: [0x00000000100000-0x0000002ffeffff] (usable)
> [ 0.000000] BIOS-e820: [0x0000002fff0000-0x0000002fffffff] (ACPI data)
> [ 0.000000] BIOS-e820: [0x000000fffc0000-0x000000ffffffff] (reserved)
> [ 0.000000] e820 remove range: [0x00000000000100-0xfffffffffffffffe] (usable)
> [ 0.000000] NX (Execute Disable) protection: active
> [ 0.000000] user-defined physical RAM map:
> [ 0.000000] user: [0x00000000000000-0x000000000000ff] (usable)
> [ 0.000000] user: [0x0000000009fc00-0x0000000009ffff] (reserved)
> [ 0.000000] user: [0x000000000f0000-0x000000000fffff] (reserved)
> [ 0.000000] user: [0x0000002fff0000-0x0000002fffffff] (ACPI data)
> [ 0.000000] user: [0x000000fffc0000-0x000000ffffffff] (reserved)
> [ 0.000000] e820 update range: [0x00000000000000-0x000000000000ff] (usable) ==> (reserved)
> [ 0.000000] aligned physical RAM map:
> [ 0.000000] aligned: [0x00000000000000-0x000000000000ff] (reserved)
> [ 0.000000] aligned: [0x0000000009fc00-0x0000000009ffff] (reserved)
> [ 0.000000] aligned: [0x000000000f0000-0x000000000fffff] (reserved)
> [ 0.000000] aligned: [0x0000002fff0000-0x0000002fffffff] (ACPI data)
> [ 0.000000] aligned: [0x000000fffc0000-0x000000ffffffff] (reserved)
> [ 0.000000] DMI 2.5 present.
> [ 0.000000] DMI: /VirtualBox, BIOS VirtualBox 12/01/2006
> [ 0.000000] e820 update range: [0x00000000000000-0x0000000000ffff] (usable) ==> (reserved)
> [ 0.000000] e820 remove range: [0x000000000a0000-0x000000000fffff] (usable)
> [ 0.000000] No AGP bridge found
> [ 0.000000] last_pfn = 0x0 max_arch_pfn = 0x400000000
> [ 0.000000] MTRR default type: uncachable
> [ 0.000000] MTRR variable ranges disabled:
> [ 0.000000] x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106
> [ 0.000000] CPU MTRRs all blank - virtualized system.
> [ 0.000000] Scan SMP from ffff880000000000 for 1024 bytes.
> [ 0.000000] Scan SMP from ffff88000009fc00 for 1024 bytes.
> [ 0.000000] found SMP MP-table at [ffff88000009fff0] 9fff0
> [ 0.000000] memblock_x86_reserve_range: [0x0009fff0-0x0009ffff] * MP-table mpf
> [ 0.000000] mpc: e1160-e1254
> [ 0.000000] memblock_x86_reserve_range: [0x000e1160-0x000e1253] * MP-table mpc
> [ 0.000000] memblock_x86_reserve_range: [0x0348b000-0x0348b070] BRK
> [ 0.000000] MEMBLOCK configuration:
> [ 0.000000] memory size = 0x0
> [ 0.000000] memory.cnt = 0x1
> [ 0.000000] memory[0x0] [0x00000000000000-0xffffffffffffffff], 0x0 bytes
> [ 0.000000] reserved.cnt = 0x6
> [ 0.000000] reserved[0x0] [0x0000000009fc00-0x000000000fffff], 0x60400 bytes
> [ 0.000000] reserved[0x1] [0x0000000009fff0-0x0000000009ffff], 0x10 bytes
> [ 0.000000] reserved[0x2] [0x000000000e1160-0x000000000e1253], 0xf4 bytes
> [ 0.000000] reserved[0x3] [0x00000001000000-0x0000000348a6d7], 0x248a6d8 bytes
> [ 0.000000] reserved[0x4] [0x0000000348b000-0x0000000348b070], 0x71 bytes
> [ 0.000000] reserved[0x5] [0x0000007c59d000-0x0000007fffefff], 0x3a62000 bytes
> [ 0.000000] initial memory mapped : 0 - 20000000
> [ 0.000000] Kernel panic - not syncing: Cannot allocate trampoline
> [ 0.000000]
> [ 0.000000] Pid: 0, comm: swapper Not tainted 2.6.37-rc1-tip-yh-02102-g776a022-dirty #276
> [ 0.000000] Call Trace:
> [ 0.000000] [<ffffffff81cd3f14>] panic+0x91/0x1a3
> [ 0.000000] [<ffffffff82783490>] reserve_trampoline_memory+0x46/0x72
> [ 0.000000] [<ffffffff827801fe>] setup_arch+0x5b0/0xae3
> [ 0.000000] [<ffffffff827cb3a0>] ? boot_command_line+0x0/0x800
> [ 0.000000] [<ffffffff81cd4067>] ? printk+0x41/0x43
> [ 0.000000] [<ffffffff827cb3a0>] ? boot_command_line+0x0/0x800
> [ 0.000000] [<ffffffff8277bb0d>] start_kernel+0xd7/0x3e8
> [ 0.000000] [<ffffffff8277b2cc>] x86_64_start_reservations+0x9c/0xa0
> [ 0.000000] [<ffffffff8277b3e4>] x86_64_start_kernel+0x114/0x11b
> [ 0.000000] ------------[ cut here ]------------
> [ 0.000000] WARNING: at kernel/lockdep.c:2322 trace_hardirqs_on_caller+0xc3/0x178()
> [ 0.000000] Hardware name: VirtualBox
> [ 0.000000] Modules linked in:
> [ 0.000000] Pid: 0, comm: swapper Not tainted 2.6.37-rc1-tip-yh-02102-g776a022-dirty #276
> [ 0.000000] Call Trace:
> [ 0.000000] [<ffffffff8107bda0>] warn_slowpath_common+0x85/0x9d
> [ 0.000000] [<ffffffff81cd3fe1>] ? panic+0x15e/0x1a3
> [ 0.000000] [<ffffffff8107bdd2>] warn_slowpath_null+0x1a/0x1c
> [ 0.000000] [<ffffffff810a8e59>] trace_hardirqs_on_caller+0xc3/0x178
> [ 0.000000] [<ffffffff810a8f1b>] trace_hardirqs_on+0xd/0xf
> [ 0.000000] [<ffffffff81cd3fe1>] panic+0x15e/0x1a3
> [ 0.000000] [<ffffffff82783490>] reserve_trampoline_memory+0x46/0x72
> [ 0.000000] [<ffffffff827801fe>] setup_arch+0x5b0/0xae3
> [ 0.000000] [<ffffffff827cb3a0>] ? boot_command_line+0x0/0x800
> [ 0.000000] [<ffffffff81cd4067>] ? printk+0x41/0x43
> [ 0.000000] [<ffffffff827cb3a0>] ? boot_command_line+0x0/0x800
> [ 0.000000] [<ffffffff8277bb0d>] start_kernel+0xd7/0x3e8
> [ 0.000000] [<ffffffff8277b2cc>] x86_64_start_reservations+0x9c/0xa0
> [ 0.000000] [<ffffffff8277b3e4>] x86_64_start_kernel+0x114/0x11b
> [ 0.000000] ---[ end trace a7919e7f17c0a725 ]---