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Message-ID: <68676e00809081425r604baefaqd1ebb9502f5d9049@mail.gmail.com> Date: Mon, 8 Sep 2008 23:25:36 +0200 From: "Luca Tettamanti" <kronos.it@...il.com> To: "Yinghai Lu" <yhlu.kernel@...il.com> Cc: "Ingo Molnar" <mingo@...e.hu>, "H. Peter Anvin" <hpa@...nel.org>, "Peter Zijlstra" <peterz@...radead.org>, linux-kernel@...r.kernel.org, mingo@...hat.com Subject: Re: [2.6.27] overlapping early reservations [was: early exception - lockdep related?] On Mon, Sep 8, 2008 at 10:46 PM, Yinghai Lu <yhlu.kernel@...il.com> wrote: > On Mon, Sep 8, 2008 at 1:00 PM, Luca Tettamanti <kronos.it@...il.com> wrote: >> On Mon, Sep 8, 2008 at 9:35 PM, Yinghai Lu <yhlu.kernel@...il.com> wrote: >>> On Mon, Sep 8, 2008 at 12:14 PM, Luca Tettamanti <kronos.it@...il.com> wrote: >>>> On Mon, Sep 8, 2008 at 8:04 PM, Yinghai Lu <yhlu.kernel@...il.com> wrote: >>>>> On Mon, Sep 8, 2008 at 10:54 AM, Luca Tettamanti <kronos.it@...il.com> wrote: >>>>> >>>>> can you post boot log with working kernel + "debug"? >>>> >>>> This is the map of the early reservations (will send the dmesg + debug later): >>>> >>>> [ 0.000000] (6 early reservations) ==> bootmem [0000000000 - 00bbf90000] >>>> [ 0.000000] #0 [0000000000 - 0000001000] BIOS data page ==> >>>> [0000000000 - 0000001000] >>>> [ 0.000000] #1 [0000006000 - 0000008000] TRAMPOLINE ==> >>>> [0000006000 - 0000008000] >>>> [ 0.000000] #2 [0000200000 - 0000d012b8] TEXT DATA BSS ==> >>>> [0000200000 - 0000d012b8] >>>> [ 0.000000] #3 [00037dc000 - 00040fe2d9] RAMDISK ==> >>>> [00037dc000 - 00040fe2d9] >>>> [ 0.000000] #4 [000009c800 - 0000100000] BIOS reserved ==> >>>> [000009c800 - 0000100000] >>>> [ 0.000000] #5 [0000008000 - 000000b000] PGTABLE ==> >>>> [0000008000 - 000000b000] >>>> >>>> As a side note: I've bigger older (2.6.26) kernels that boots fine, >>>> and smaller 2.6.27 kernels that do not work, e.g. this one: >>> >>> that could explain sth. big kernel use more, and lilo put ramdisk >>> high from 0x37dc000 >>> >>>> >>>> Overlapping early reservations b71000-effb43 RAMDISK to 200000-c84ecf >>>> TEXT DATA BSS >>> >>> need to figure out, lilo put ramdisk so low... >>> >>> need to know e820 table layout... >> >> BIOS-provided physical RAM map: >> BIOS-e820: 0000000000000000 - 000000000009c800 (usable) >> BIOS-e820: 000000000009c800 - 00000000000a0000 (reserved) >> BIOS-e820: 00000000000e4000 - 0000000000100000 (reserved) >> BIOS-e820: 0000000000100000 - 00000000bbf90000 (usable) >> BIOS-e820: 00000000bbf90000 - 00000000bbf9e000 (ACPI data) >> BIOS-e820: 00000000bbf9e000 - 00000000bbfe0000 (ACPI NVS) >> BIOS-e820: 00000000bbfe0000 - 00000000bc000000 (reserved) >> BIOS-e820: 00000000fee00000 - 00000000fee01000 (reserved) >> BIOS-e820: 00000000ffb00000 - 0000000100000000 (reserved) >> last_pfn = 0xbbf90 max_arch_pfn = 0x3ffffffff >> >> dmesg is attached, but I haven't rebooted yet. > > so some config works, others not? Yes, that's correct, but it doesn't seem related to a particular configuration item (moon phase maybe). For example the kernel I'm using right now (-rc4-something) has the same config as a non-working kernel minus LOCKDEP, but git-current minus LOCKDEP does not work. On another kernel I got a working config just enabling DEBUG_INFO, in another case I disabled MTD. Luca -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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