Re: grub2 not able to boot 1G size of linux iso file

[Ramakrishna Maladi (rmaladi)]

I don’t see memory allocation error. However, with allocated memory, after
copying 1.12G of initrd.img, I see x64 exception indication memory
corruption

!!! X64 Exception Type - 0000000000000006 !!!!

RIP - 000000007BF0B7C2, CS - 0000000000000038, RFLAGS - 0000000000210086

RAX - 000000007BF23657, RCX - 000000000000001F, RDX - 000000007BF0B768

RBX - 00000000684AF0A0, RSP - 000000007BF0B708, RBP - 000000007BF0BAC0

RSI - 00000000666AEAE1, RDI - 000000007BF0B770

R8 - 0000000000000012, R9 - 0000000000000020, R10 - 0000000000000002

R11 - 0000000000C00E14, R12 - 0000000000002800, R13 - 0000000000005800

R14 - 0000000000000F71, R15 - 0000000077973800

DS - 0000000000000030, ES - 0000000000000030, FS - 0000000000000030

GS - 0000000000000030, SS - 0000000000000030

GDTR - 00007BC351D00047 4848246C8B480000, LDTR - 0000000000000000

IDTR - 00007B1520180FFF CCCCC35F5C410000, TR - 0000000000000000

CR0 - 0000000080000013, CR2 - 0000000000000000, CR3 - 000000007BD7B000

CR4 - 0000000000000668, CR8 - 0000000000000000

DR0 - 0000000000000000, DR1 - 0000000000000000, DR2 - 0000000000000000

DR3 - 0000000000000000, DR6 - 00000000FFFF0FF0, DR7 - 0000000000000400
     



If I use initrd.img of 850M, it works fine.

If I reduce PCIe MMIO config memory, even 1.12G file boots up fine.

So, idea here is, if I have grub allocating memory above 4G, it might work
fine.

Thanks,
Ram

On 1/17/16, 7:40 PM, "Andrei Borzenkov" <address@hidden> wrote:

>18.01.2016 06:24, Ramakrishna Maladi (rmaladi) пишет:
>> It is for i386-pc family (in fact x86_64 - broad well DE).
>> I need it because I want to boot 1.12G size of initrd.img from USB
>> This is failing because of low mem crunch
>> 
>
>I do not understand what "low mem crunch" is, nor do I see any memory
>allocation error.
>
>> Thanks,
>> Ram
>> 
>> On 1/17/16, 7:19 PM, "Andrei Borzenkov" <address@hidden> wrote:
>> 
>>> 18.01.2016 01:36, Ramakrishna Maladi (rmaladi) пишет:
>>>> Hi
>>>>   Is there a way to allocate memory which is above 4G for initrd.img
>>>>in
>>>> grub?
>>>>   
>>>
>>> It probably depends on platform, on i386-pc memory allocator is
>>> restricted to 4G address space. Why would you need that?
>>>
>>>> Thanks,
>>>> Ram
>>>>
>>>> On 1/10/16, 12:20 AM, "address@hidden on
>>>> behalf of Ramakrishna Maladi (rmaladi)"
>>>> <address@hidden on behalf of
>>>> address@hidden> wrote:
>>>>
>>>>>
>>>>> set default=0
>>>>> serial --unit=0 --speed=51200
>>>>>
>>>>> terminal_input console
>>>>> terminal_output serial
>>>>> set timeout=5
>>>>>
>>>>> menuentry "System Install OS" {
>>>>>        echo "Booting from USB.."
>>>>>        loopback loop /myimage.iso
>>>>>        set root=(loop)
>>>>>        echo "Loading Kernel.."
>>>>>        linux (loop)/boot/bzImage root=/dev/ram install=/dev/sda
>>>>> console=ttyS0,38400 prod=1 address@hidden bigphysarea=10M quiet
>>>>> pci=assign-busses noissu aer=off pci=hpmemsize=0M,hpiosize=0
>>>>>        echo "Loading initrd.."
>>>>>        initrd (loop)/boot/initrd.img
>>>>> }
>>>>>
>>>>>
>>>>>
>>>>> Thanks,
>>>>> Ram
>>>>>
>>>>> On 1/9/16, 11:49 PM, "Andrei Borzenkov" <address@hidden> wrote:
>>>>>
>>>>>> 10.01.2016 08:11, Ramakrishna Maladi (rmaladi) пишет:
>>>>>>> Friends,
>>>>>>>   On broad well-DE intel CPU chipset when I run grub2.0 to load my
>>>>>>> linux (Windriver destro of) iso file 1.2G, I am seeing an exception
>>>>>>>   Would it be the EFI boot sevices issue in BIOS or an known issue
>>>>>>>on
>>>>>>> grub2.0 ?
>>>>>>>   Could you pls point me if there is a patch I need to take in
>>>>>>> grub2.0?
>>>>>>> I have grub2.0 source of 2014.
>>>>>>>
>>>>>>> error: unsupported serial port speed.
>>>>>>> error: terminal `serial' isn't found.
>>>>>>>
>>>>>>>
>>>>>>> GNU GRUB version 2.00
>>>>>>> Press F2 to goto grub Menu..
>>>>>>> Booting from USB..
>>>>>>> Loading Kernel..
>>>>>>> loader/i386/linux.c:535: prot_mode_mem = 2000000, prot_mode_target
>>>>>>>=
>>>>>>> 2000000,
>>>>>>> prot_size = 124a000
>>>>>>> loader/i386/linux.c:1225: bzImage, setup=0x3c00, size=0x124a000
>>>>>>> Loading initrd..
>>>>>>> loader/i386/linux.c:1440: linux cmd agrc = 1
>>>>>>> loader/i386/linux.c:1444: argv[0]: (loop)/boot/initrd.img
>>>>>>> ERROR: Class:3000000; Subclass:50000; Operation: 6
>>>>>>>
>>>>>>
>>>>>> I do not see such error string in current GRUB sources at all. Could
>>>>>> you
>>>>>> attach grub.cfg, otherwise we have no idea what your ISO does.
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> Help-grub mailing list
>>>>> address@hidden
>>>>> https://lists.gnu.org/mailman/listinfo/help-grub
>>>>
>>>
>> 
>