Move to 7.1 as fix still not accepted upstream.

Fix included in qemu-kvm-1.5.3-67.el7

Reproduce this issue using the following version:
kernel-3.10.0-123.9.1.el7.x86_64
qemu-kvm-1.5.3-64.el7.x86_64

Steps to Reproduce:
# /usr/libexec/qemu-kvm -M error
Supported machines are:
none                 empty machine
pc                   RHEL 7.0.0 PC (i440FX + PIIX, 1996) (alias of pc-i440fx-rhel7.0.0)
pc-i440fx-rhel7.0.0  RHEL 7.0.0 PC (i440FX + PIIX, 1996) (default)
rhel6.5.0            RHEL 6.5.0 PC
rhel6.4.0            RHEL 6.4.0 PC
rhel6.3.0            RHEL 6.3.0 PC
rhel6.2.0            RHEL 6.2.0 PC
rhel6.1.0            RHEL 6.1.0 PC
rhel6.0.0            RHEL 6.0.0 PC
q35                  RHEL-7.0.0 PC (Q35 + ICH9, 2009) (alias of pc-q35-rhel7.0.0)
pc-q35-rhel7.0.0     RHEL-7.0.0 PC (Q35 + ICH9, 2009)

Test this issue using the following version on an intel host:
kernel-3.10.0-188.el7.x86_64
qemu-kvm-1.5.3-75.el7.x86_64

Steps to Test:
# /usr/libexec/qemu-kvm -M error
qemu-kvm: -M error: Unsupported machine type
Use -machine help to list supported machines!

Test this issue using the following version on an amd host:
kernel-3.10.0-187.el7.x86_64
qemu-kvm-rhev-2.1.2-3.el7.x86_64

Steps to Test:
# /usr/libexec/qemu-kvm -M error
qemu-kvm: -M error: Unsupported machine type
Use -machine help to list supported machines!

Based on the results of comment 6 and comment 7, I think this issue has been fixed.

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHSA-2015-0349.html