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Description of problem:
# /usr/libexec/qemu-kvm  --help 2>&1 | grep spice
-spice [port=port][,tls-port=secured-port][,x509-dir=<dir>]
   enable spice

#  /usr/libexec/qemu-kvm  --spice port=5900
qemu-kvm: --spice port=5900: There is no option group 'spice'
qemu-kvm: --spice port=5900: spice support is disabled

This looks like a bug in qemu-options.hx - this file supports 
conditional builds based on CONFIG_XXXX, and indeed some
SPICE pieces are conditionally removed already, but the main
-spice option is still present.

Version-Release number of selected component (if applicable):
qemu-kvm-6.0.0-7.el9.x86_64

upstream patch: "[PATCH] qemu-options.hx: remove -spice options from --help"

Merged in for qemu 7.0-rc1:

commit 5324e3e958e87083c87e2965b6c87db24c6afa90
Author: Marc-André Lureau <marcandre.lureau>
Date:   Thu Sep 9 12:44:11 2021 +0400

    qemu-options: define -spice only #ifdef CONFIG_SPICE

QE bot(pre verify): Set 'Verified:Tested,SanityOnly' as gating/tier1 test pass.

Reproduce this issue against qemu-kvm-6.2.0-11.el9_0.2.x86_64:
# /usr/libexec/qemu-kvm --help | grep spice
-spice [port=port][,tls-port=secured-port][,x509-dir=<dir>]
   enable spice
# /usr/libexec/qemu-kvm --spice 5900
qemu-kvm: --spice 5900: spice support is disabled

Verify this issue against qemu-kvm-7.0.0-2.el9.x86_64
# /usr/libexec/qemu-kvm --help | grep spice
(nothing)
# /usr/libexec/qemu-kvm --spice 5900
qemu-kvm: --spice: invalid option

Verified per comment 5

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 (Moderate: qemu-kvm security, bug fix, and enhancement update), 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://access.redhat.com/errata/RHSA-2022:7967