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KVM/Qemu allocated memory not showing in guest

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Operating Systems Linux Red Hat KVM/Qemu allocated memory not showing in guest
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Old 12-07-2018
KVM/Qemu allocated memory not showing in guest
So we have a RHEL 7.6 workstation with 128 gigs of ram. The OS sees all the ram and 80 cors (40 HT)


We have 1 guest with 8 CPUs and 32gigs of ram running RHEL 7.6 workstation as well. We are trying to create another guest with 64 CPUs and 80 gigs of ram. We setup the system using virt-manager and PXE boot the system to install the OS.


All this goes without a hitch, but when we log in after the system is build with PXE and do a free -g it only shows 2 gigs instead of 80 gigs.


I have tried many variation of memory including 64gigs, but each time we try something above 32gigs, its only shows 2gigs.


Any ideas?
Thanks!

Joe
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LEARN ABOUT NETBSD

xpci

XPCI(4) 						 BSD/xen Kernel Interfaces Manual						   XPCI(4)

NAME

     xpci -- Xen frontend paravirtualized PCI pass-through driver

SYNOPSIS

     xpci* at xenbus?
     pci* at xpci?

DESCRIPTION

     The xpci driver is the frontend part of the PCI pass-through functionality that can be used by Xen guest domains to communicate with PCI
     devices.

     From a guest point of view, xpci is similar to a pci(4) bus, except that the guest talks with the PCI backend driver instead of the real
     physical device directly.

     When the host domain is NetBSD, the xpci driver is backed by a pciback(4) driver within the dom0.

SEE ALSO

     pci(4), pciback(4), xenbus(4)

HISTORY

     The xpci driver first appeared in NetBSD 5.1.

AUTHORS

     The xpci driver was written by Manuel Bouyer <bouyer@NetBSD.org>.

SECURITY CONSIDERATIONS

     As PCI passthrough offers the possibility for guest domains to send arbitrary PCI commands to a physical device, this has direct impact on
     the overall stability and security of the system.	For example, in case of erroneous or malicious commands, the device could overwrite physi-
     cal memory portions, via DMA.

BSD
								  January 8, 2011							       BSD