Re: 3.9.7, 3.10-rc7 - UEFI stalls at boot (nothing displayed), whenbooting with mem=300M

From: Matthew Thode
Date: Tue Jul 16 2013 - 10:23:28 EST

On 07/04/2013 03:53 AM, Yves-Alexis Perez wrote:
> On jeu., 2013-07-04 at 10:37 +0200, Yves-Alexis Perez wrote:
>> On jeu., 2013-07-04 at 07:53 +0200, Luca Barbato wrote:
>>> On 07/01/2013 03:07 PM, Luca Barbato wrote:
>>>> Hopefully I will carve some time next weekend to play the restricted
>>>> bisect game.
>>>
>>> Release 3.10 apparently doesn't show the problem, I guess problem solved
>>> for me =)
>>>
>>> lu
>>>
>> I've just tried 3.10.0 with CONFIG_EFI=y and I still can't boot with
>> mem=300M.
> And to be a little more specific, and with a bit of fun, I've tryied
> âbisectingâ the amount of ram needed to make a successful boot. Platform
> is a Lenovo Thinkpad x230 with 4G of ram.
>
> mem=300M bad
> mem=4000M good
> mem=2000M bad
> mem=3000M bad
> mem=3500M good
> mem=3250M bad
> mem=3375M bad
> mem=3437M good
> mem=3406M bad
> mem=3421M bad
> mem=3429M bad
> mem=3433M good
> mem=3431M bad
> mem=3432M bad
>
> So I'm not sure what happens at the 3433M boundary, but there's
> definitely something fishy. And 3.5G ram doesn't look like a very
> specific machine (although I can't test without artificially setting the
> memory limit (I only have one 4096M sodimm).
>
> I'll try to git bisect between 3.8 and 3.10 and using mem=3432M when I
> have more time.
>
> Regards,
>
I tested with a single 2G dimm at pipacs's request. Here is what I found.

mem=unset: booted
mem=1930M: booted
mem=1929M: failed

Booted with memblock=debug and found the following :D

It looks like the uefi regions are simply higher then what the kernel
allows. Here's a grep'd dmesg and /proc/iomem. Maybe the kernel
shouldn't allow you to set mem= to lower then the mem that uefi actually
uses?


--
-- Matthew Thode (prometheanfire)
[ 0.000000] efi: EFI v2.00 by Lenovo
[ 0.000000] efi: ACPI=0x78ffe000 ACPI 2.0=0x78ffe014 SMBIOS=0x78e9e000
[ 0.000000] efi: mem00: type=3, attr=0xf, range=[0x0000000000000000-0x0000000000001000) (0MB)
[ 0.000000] efi: mem01: type=7, attr=0xf, range=[0x0000000000001000-0x000000000004e000) (0MB)
[ 0.000000] efi: mem02: type=3, attr=0xf, range=[0x000000000004e000-0x0000000000058000) (0MB)
[ 0.000000] efi: mem03: type=10, attr=0xf, range=[0x0000000000058000-0x0000000000059000) (0MB)
[ 0.000000] efi: mem04: type=7, attr=0xf, range=[0x0000000000059000-0x000000000005e000) (0MB)
[ 0.000000] efi: mem05: type=4, attr=0xf, range=[0x000000000005e000-0x000000000005f000) (0MB)
[ 0.000000] efi: mem06: type=3, attr=0xf, range=[0x000000000005f000-0x00000000000a0000) (0MB)
[ 0.000000] efi: mem07: type=2, attr=0xf, range=[0x0000000000100000-0x0000000001d00000) (28MB)
[ 0.000000] efi: mem08: type=7, attr=0xf, range=[0x0000000001d00000-0x0000000002000000) (3MB)
[ 0.000000] efi: mem09: type=2, attr=0xf, range=[0x0000000002000000-0x0000000003c00000) (28MB)
[ 0.000000] efi: mem10: type=7, attr=0xf, range=[0x0000000003c00000-0x0000000020000000) (452MB)
[ 0.000000] efi: mem11: type=0, attr=0xf, range=[0x0000000020000000-0x0000000020200000) (2MB)
[ 0.000000] efi: mem12: type=7, attr=0xf, range=[0x0000000020200000-0x000000002eb38000) (233MB)
[ 0.000000] efi: mem13: type=4, attr=0xf, range=[0x000000002eb38000-0x000000002eb58000) (0MB)
[ 0.000000] efi: mem14: type=7, attr=0xf, range=[0x000000002eb58000-0x0000000030d9a000) (34MB)
[ 0.000000] efi: mem15: type=0, attr=0xf, range=[0x0000000030d9a000-0x0000000030f9a000) (2MB)
[ 0.000000] efi: mem16: type=4, attr=0xf, range=[0x0000000030f9a000-0x0000000031b28000) (11MB)
[ 0.000000] efi: mem17: type=7, attr=0xf, range=[0x0000000031b28000-0x0000000057a2f000) (607MB)
[ 0.000000] efi: mem18: type=2, attr=0xf, range=[0x0000000057a2f000-0x0000000074d99000) (467MB)
[ 0.000000] efi: mem19: type=7, attr=0xf, range=[0x0000000074d99000-0x0000000074f82000) (1MB)
[ 0.000000] efi: mem20: type=1, attr=0xf, range=[0x0000000074f82000-0x0000000074f9f000) (0MB)
[ 0.000000] efi: mem21: type=7, attr=0xf, range=[0x0000000074f9f000-0x0000000075b79000) (11MB)
[ 0.000000] efi: mem22: type=4, attr=0xf, range=[0x0000000075b79000-0x0000000077f9f000) (36MB)
[ 0.000000] efi: mem23: type=7, attr=0xf, range=[0x0000000077f9f000-0x000000007822d000) (2MB)
[ 0.000000] efi: mem24: type=2, attr=0xf, range=[0x000000007822d000-0x0000000078236000) (0MB)
[ 0.000000] efi: mem25: type=3, attr=0xf, range=[0x0000000078236000-0x000000007899f000) (7MB)
[ 0.000000] efi: mem26: type=5, attr=0x800000000000000f, range=[0x000000007899f000-0x0000000078ac0000) (1MB)
[ 0.000000] efi: mem27: type=5, attr=0x800000000000000f, range=[0x0000000078ac0000-0x0000000078b9f000) (0MB)
[ 0.000000] efi: mem28: type=6, attr=0x800000000000000f, range=[0x0000000078b9f000-0x0000000078cb1000) (1MB)
[ 0.000000] efi: mem29: type=6, attr=0x800000000000000f, range=[0x0000000078cb1000-0x0000000078d9f000) (0MB)
[ 0.000000] efi: mem30: type=0, attr=0xf, range=[0x0000000078d9f000-0x0000000078e1f000) (0MB)
[ 0.000000] efi: mem31: type=0, attr=0xf, range=[0x0000000078e1f000-0x0000000078e9b000) (0MB)
[ 0.000000] efi: mem32: type=0, attr=0xf, range=[0x0000000078e9b000-0x0000000078e9c000) (0MB)
[ 0.000000] efi: mem33: type=0, attr=0xf, range=[0x0000000078e9c000-0x0000000078e9f000) (0MB)
[ 0.000000] efi: mem34: type=10, attr=0xf, range=[0x0000000078e9f000-0x0000000078ede000) (0MB)
[ 0.000000] efi: mem35: type=10, attr=0xf, range=[0x0000000078ede000-0x0000000078f9f000) (0MB)
[ 0.000000] efi: mem36: type=9, attr=0xf, range=[0x0000000078f9f000-0x0000000078fdd000) (0MB)
[ 0.000000] efi: mem37: type=9, attr=0xf, range=[0x0000000078fdd000-0x0000000078fff000) (0MB)
[ 0.000000] efi: mem38: type=4, attr=0xf, range=[0x0000000078fff000-0x0000000079000000) (0MB)
[ 0.000000] efi: mem39: type=7, attr=0xf, range=[0x0000000100000000-0x0000000100600000) (6MB)
[ 0.000000] efi: mem40: type=11, attr=0x8000000000000001, range=[0x00000000f80f8000-0x00000000f80f9000) (0MB)
[ 0.000000] efi: mem41: type=11, attr=0x8000000000000001, range=[0x00000000fed1c000-0x00000000fed20000) (0MB)
[ 0.000000] efi: Could not reserve boot range [0x0000000000-0x0000000fff]
[ 0.000000] memblock_reserve: [0x0000000004e000-0x00000000058000] efi_reserve_boot_services+0x128/0x180
[ 0.000000] memblock_reserve: [0x0000000005e000-0x0000000005f000] efi_reserve_boot_services+0x128/0x180
[ 0.000000] efi: Could not reserve boot range [0x000005f000-0x000009ffff]
[ 0.000000] memblock_reserve: [0x0000002eb38000-0x0000002eb58000] efi_reserve_boot_services+0x128/0x180
[ 0.000000] memblock_reserve: [0x00000030f9a000-0x00000031b28000] efi_reserve_boot_services+0x128/0x180
[ 0.000000] memblock_reserve: [0x00000075b79000-0x00000077f9f000] efi_reserve_boot_services+0x128/0x180
[ 0.000000] memblock_reserve: [0x00000078236000-0x0000007899f000] efi_reserve_boot_services+0x128/0x180
[ 0.000000] memblock_reserve: [0x00000078fff000-0x00000079000000] efi_reserve_boot_services+0x128/0x180
[ 0.000000] ACPI: UEFI 0000000078fdf000 0003E (v01 LENOVO TP-8A 00001420 PTL 00000002)
[ 0.000000] ACPI: UEFI 0000000078fde000 00042 (v01 PTL COMBUF 00000001 PTL 00000001)
[ 0.000000] ACPI: UEFI 0000000078fdd000 00292 (v01 LENOVO TP-8A 00001420 PTL 00000002)
[ 1.439188] efifb: probing for efifb
[ 1.439633] efifb: framebuffer at 0x80000000, mapped to 0xffffc90009580000, using 1216k, total 1216k
[ 1.439658] efifb: mode is 640x480x32, linelength=2560, pages=1
[ 1.439670] efifb: scrolling: redraw
[ 1.439685] efifb: Truecolor: size=8:8:8:8, shift=24:16:8:0
[ 1.445524] fb0: EFI VGA frame buffer device
[ 1.568214] fb: conflicting fb hw usage inteldrmfb vs EFI VGA - removing generic driver
[ 2.359805] tsc: Refined TSC clocksource calibration: 2491.905 MHz
[ 3.384447] EFI Variables Facility v0.08 2004-May-1700000000-00000fff : reserved
00001000-00057fff : System RAM
00058000-00058fff : ACPI Non-volatile Storage
00059000-0009ffff : System RAM
000a0000-000bffff : PCI Bus 0000:00
000c0000-000c7fff : Video ROM
000c8000-000cbfff : pnp 00:00
000cc000-000cffff : pnp 00:00
000d0000-000d3fff : pnp 00:00
000d4000-000d7fff : pnp 00:00
000d8000-000dbfff : pnp 00:00
000dc000-000dffff : pnp 00:00
000e0000-000e3fff : pnp 00:00
000e4000-000e7fff : pnp 00:00
000e8000-000ebfff : pnp 00:00
000ec000-000effff : pnp 00:00
000f0000-000fffff : System ROM
00100000-1fffffff : System RAM
02000000-02df8f33 : Kernel code
03400000-035a4aff : Kernel data
039d3000-03b17fff : Kernel bss
20000000-201fffff : reserved
20200000-30d99fff : System RAM
30d9a000-30f99fff : reserved
30f9a000-7899efff : System RAM
7899f000-78e9efff : reserved
78e9f000-78f9efff : ACPI Non-volatile Storage
78f9f000-78ffefff : ACPI Tables
78fff000-78ffffff : System RAM
79000000-7bffffff : RAM buffer
7da00000-febfffff : PCI Bus 0000:00
7da00000-7dbfffff : PCI Bus 0000:02
7dc00000-7ddfffff : PCI Bus 0000:02
80000000-8fffffff : 0000:00:02.0
90000000-903fffff : 0000:00:02.0
90400000-90bfffff : PCI Bus 0000:05
90c00000-913fffff : PCI Bus 0000:0d
91400000-91bfffff : PCI Bus 0000:0d
91400000-914007ff : 0000:0d:00.3
91401000-914010ff : 0000:0d:00.0
91401000-914010ff : mmc0
91c00000-923fffff : PCI Bus 0000:05
92400000-924fffff : PCI Bus 0000:03
92400000-92401fff : 0000:03:00.0
92400000-92401fff : iwlwifi
92500000-9251ffff : 0000:00:19.0
92500000-9251ffff : e1000e
92520000-92523fff : 0000:00:1b.0
92520000-92523fff : ICH HD audio
92524000-925240ff : 0000:00:1f.3
92525000-9252500f : 0000:00:16.0
92525000-9252500f : mei
92528000-925287ff : 0000:00:1f.2
92528000-925287ff : ahci
92529000-925293ff : 0000:00:1d.0
92529000-925293ff : ehci_hcd
9252a000-9252a3ff : 0000:00:1a.0
9252a000-9252a3ff : ehci_hcd
9252b000-9252bfff : 0000:00:19.0
9252b000-9252bfff : e1000e
f8000000-fbffffff : PCI MMCONFIG 0000 [bus 00-3f]
f80f8000-f80f8fff : reserved
fec00000-fec003ff : IOAPIC 0
fed00000-fed003ff : HPET 0
fed10000-fed13fff : pnp 00:01
fed18000-fed18fff : pnp 00:01
fed19000-fed19fff : pnp 00:01
fed1c000-fed1ffff : reserved
fed1c000-fed1ffff : pnp 00:01
fed1f410-fed1f414 : iTCO_wdt
fed1f410-fed1f414 : iTCO_wdt
fed40000-fed4bfff : PCI Bus 0000:00
fed45000-fed4bfff : pnp 00:01
fed90000-fed90fff : dmar0
fed91000-fed91fff : dmar1
fee00000-fee00fff : Local APIC
100000000-1005fffff : System RAM
100600000-103ffffff : RAM buffer

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