[Pkg-xen-devel] Bug#734761: Bug#734761: xen-system-amd64: "XEN kernel detects 3GB RAM instead of 4GB"

[Ian Campbell]

On Thu, 2014-01-09 at 17:37 +0100, Maarten de Wolff wrote:
> The xen kernel detects 3GB of memory instead of the full 4GB. When
> using the "normal" kernel 4GB is detected.
> 
> On boot the 4GB is detected:
> root at ams-tc1-xen27:~# dmesg |grep Mem
> [    0.000000] Memory: 3226132k/4980736k available (3426k kernel code, 788180k absent, 966424k reserved, 3312k data, 576k init)
> 
> But only 3GB is used:

This only tells you what dom0 is seeing/using. What does "xl info" (or
"xm info") tell you about the whole system?

This might relate to the issue described in
http://blog.xen.org/index.php/2012/04/30/memory-where-it-has-not-gone/
http://wiki.xen.org/wiki/Do%EF%BB%BFm0_Memory_%E2%80%94_Where_It_Has_Not_Gone
	
Ian.

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