About
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From fc42 mock chroot, build a pvgrub2 blob for pvh using the new xen modules provided by
grub2:

grub2-xen_pvh-i386-modules  <-- this is used here
grub2-xen-x64-modules

// create custom mock chroot higher up in mock path
mkdir -p .config/mock && cd $_
cp -p /etc/mock/fedora-42-x86_64.cfg ./
// append custom mock config for internal shell use
cp -p fc42-mock-extra >> fedora-42-x86_64.cfg
mock -r fedora-42-x86_64 --init
mock -r fedora-42-x86_64 --shell

// now inside mock shell, make a sandbox
mkdir pvgrub2 && cd $_


// stage our locale
cp -p grub.mo /usr/share/locale/en@quot/LC_MESSAGES/


// who are we?
# cat /etc/fedora-release 
Fedora release 42 (Adams)


// still in mock shell! D/L and force install (as root) 3 pkgs below:
rpm -Uvh grub2-tools-extra-2.12-28.fc42.x86_64.rpm --force --nodeps
rpm -Uvh device-mapper-libs-1.02.204-3.fc42.x86_64.rpm --force --nodeps
rpm -Uvh grub2-xen_pvh-i386-modules-2.12-28.fc42.noarch.rpm --force --nodeps


// ask pkg manager to confirm
# rpm -qa | grep -P 'xen|grub|device'
grub2-tools-extra-2.12-28.fc42.x86_64
device-mapper-libs-1.02.204-3.fc42.x86_64
grub2-xen_pvh-i386-modules-2.12-28.fc42.noarch


// this is the internal grub2 config (debian/grub-xen-host_grub-pvh.cfg)
$ cat boot-grub-grub.cfg
if search -s -f /boot/grub/grub.cfg ; then
	echo "Reading (${root})/boot/grub/grub.cfg"
	configfile /boot/grub/grub.cfg
fi

if search -s -f /grub/grub.cfg ; then
	echo "Reading (${root})/grub/grub.cfg"
	configfile /grub/grub.cfg
fi


// create the mkimage applet
# cat user_mk_xen_image.sh 
#!/bin/sh

PATH=$PATH:/usr/sbin:/sbin
target="$1"
platform="$2"
cfgfile="$3"
mkdir -p boot/grub2 ; \
cp -p $cfgfile boot/grub2/grub.cfg ;\

pvfile=grub-${target}-${platform}.bin
        grub2-mkstandalone -v --compress=xz --locale-dir=/usr/share/locale --locales="" --fonts="unicode" \
         --modules="linux" --themes=""  \
        -O ${target}-${platform} -o $pvfile boot/grub2/grub.cfg
#"/boot/grub2/grub.cfg=${cfgfile}"
exit 0

// set exec bit
chmod +x user_mk_xen_image.sh


// build the pvh grub2 blob
./user_mk_xen_image.sh i386 xen_pvh boot-grub-grub.cfg > pvh-obj-mk.out 2>&1


// see the *.bin below
# ls -al
total 5000
drwxrwxr-x 3 root      root         4096 Apr 26 21:41 .
drwxrwxr-x 6 mockbuild mock         4096 Apr 26 21:31 ..
drwxrwxr-x 3 root      root         4096 Apr 26 21:36 boot
-rw-rw-r-- 1 root      root          238 Apr 26 21:32 boot-grub-grub.cfg
-rw-rw-r-- 1 root      root       184364 Apr 26 21:30 device-mapper-libs-1.02.204-3.fc42.x86_64.rpm
-rw-r--r-- 1 mockbuild mockbuild 1909926 Apr 26 20:28 grub2-tools-2.12-28.fc42.x86_64.rpm
-rw-rw-r-- 1 root      root       855630 Apr 26 21:26 grub2-tools-extra-2.12-28.fc42.x86_64.rpm
-rw-rw-r-- 1 root      root       870238 Apr 26 21:20 grub2-xen_pvh-i386-modules-2.12-28.fc42.noarch.rpm
-rw-rw-r-- 1 root      root      1185336 Apr 26 21:39 grub-i386-xen_pvh.bin		<-- success
-rw-rw-r-- 1 root      root        72960 Apr 26 21:39 pvh-obj-mk.out
-rw-rw-r-- 1 root      root         1690 Apr 26 21:54 README.pvh
-rwxrwxr-x 1 root      root          434 Apr 26 21:36 user_mk_xen_image.sh


Author
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PryMar56
Apr 2025