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Re: [Xen-devel] [Xen-users] xl info displays less ram than the total available



Konrad Rzeszutek Wilk:
On Thu, Oct 06, 2016 at 12:59:13PM +0200, Blallo wrote:
I'm using grub2. After the lunch break I can post the full grub menu entry and 
the exact version of grub2.

Cc-ing Daniel (who is now an GRUB2 maintainer).

Is this by chance an EFI box?And you are booting using EFI GRUB2?


On 6 October 2016 12:55:16 CEST, George Dunlap <george.dunlap@xxxxxxxxxx> wrote:
>On Wed, Oct 5, 2016 at 3:01 PM, Jan Beulich <JBeulich@xxxxxxxx> wrote:
>>>>> On 05.10.16 at 15:32, <blallo@xxxxxxxxxx> wrote:
>>> Here it comes xl dmesg with Xen booted with e820-verbose=true
>>
>> I have to admit that the only way I can see
>>
>> (XEN) Initial Xen-e820 RAM map:
>> (XEN)  0000000000000000 - 000000000009ec00 (usable)
>> (XEN)  000000000009ec00 - 00000000000a0000 (reserved)
>> (XEN)  00000000000e0000 - 0000000000100000 (reserved)
>> (XEN)  0000000000100000 - 0000000079cbe000 (usable)
>> (XEN)  0000000079cbe000 - 00000000bcd2f000 (reserved)
>> (XEN)  00000000bcd2f000 - 00000000bce7f000 (ACPI NVS)
>> (XEN)  00000000bce7f000 - 00000000bceff000 (ACPI data)
>> (XEN)  00000000bceff000 - 00000000bfa00000 (reserved)
>> (XEN)  00000000f8000000 - 00000000fc000000 (reserved)
>> (XEN)  00000000fec00000 - 00000000fec01000 (reserved)
>> (XEN)  00000000fed08000 - 00000000fed09000 (reserved)
>> (XEN)  00000000fed10000 - 00000000fed18000 (reserved)
>> (XEN)  00000000fed18000 - 00000000fed19000 (reserved)
>> (XEN)  00000000fed19000 - 00000000fed1a000 (reserved)
>> (XEN)  00000000fed1c000 - 00000000fed20000 (reserved)
>> (XEN)  00000000fee00000 - 00000000fee01000 (reserved)
>> (XEN)  00000000ffc00000 - 0000000100000000 (reserved)
>> (XEN)  0000000100000000 - 000000043e600000 (reserved)
>>
>> having all those reserved regions above 2Gb is for the boot
>> loader to behave oddly. Since Linux and Xen use different paths
>> in the boot loader, one can't really draw conclusions from Linux
>> getting to see a better memory map.
>
>Do you have any suggestions for how to check whether it really is the
>bootloader?
>
>Leonardo, are you using grub2 or a different bootloader?


Hi everybody,
first of all, thanks for all the effort you're putting in this issue of
mine. Secondly, I apologize for the top quoting of my last email: I was
on my mobile.

Konrad, yes, I boot using efi grub2. The version is

% grub-install -V
grub-install (GRUB) 2.02~beta3

as obtained from the Arch repos.

I attach the custom /etc/grub.d/ script I use to generate the grub menu
entry for Xen booting. It is largely taken by the original one I use to
boot into the ordinary Arch kernel.


Greetings

--
Leonardo

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