Package Details: xen 4.19.1pre-1

Git Clone URL: https://aur.archlinux.org/xen.git (read-only, click to copy)
Package Base: xen
Description: Open-source type-1 or baremetal hypervisor
Upstream URL: https://xenproject.org/
Keywords: hypervisor virtualization xen
Licenses: GPL2
Submitter: sergej
Maintainer: Refutationalist
Last Packager: Refutationalist
Votes: 185
Popularity: 0.68
First Submitted: 2009-11-09 11:22 (UTC)
Last Updated: 2024-09-20 00:31 (UTC)

Dependencies (63)

Sources (7)

Pinned Comments

Refutationalist commented on 2024-05-22 22:08 (UTC) (edited on 2024-05-23 00:07 (UTC) by Refutationalist)

As of now (2024-22-05) Xen with stubdom doesn't build because of a problem in the imported code. Been this way for about two weeks. Anyone else seeing this behavior?

Also, there is a lot of work happening on Xen in my development repo, thanks to @Serus. Check it out at: https://github.com/refutationalist/saur

Latest Comments

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ArthurBorsboom commented on 2018-10-31 07:52 (UTC)

I have found a solution in the past (and am still using) another way of loading the (AMD) microcode in Xen.

In essence:

  • Create a symlink from /lib/firmware/amd-ucode/microcode_amd_fam15h.bin -> /boot/microcode_amd_fam15h.bin
  • Edit the /etc/xen/grub.conf and add " ucode=-1"

  • Manually update the file /etc/grub.d/09_xen by adding the following two lines (note that these lines differ a little bit from the forum post

    echo 'Loading AMD Microcode' module2 ${REAL_DIR}/microcode_amd_fam15h.bin

  • rebuild grub conf file: grub-mkconfig -o /boot/grub/grub.cfg

  • reboot

I have described it more accurately in this forum post, where you have to replace the word module (outdated) with module2.

https://bbs.archlinux.org/viewtopic.php?id=191828

So, no kernel panic while loading multiple ramdisks.

Does this help you to find a persistent solution?

eduncan911 commented on 2018-10-30 15:14 (UTC) (edited on 2018-10-30 15:39 (UTC) by eduncan911)

EDIT: Created a bbs topic for discussion: https://bbs.archlinux.org/viewtopic.php?pid=1814467

Intel (and perhaps AMD, can't test that yet) microcode patching.

Problem:

xen.cfg for Xen EFI cannot use the intel-ucode.img microcode binary produced by the intel-ucode system package. Attempting to specify multiple ramdisk lines panics the kernel (Xen EFI only reads the first line); and, specifying multiple imgs on the single ramdisk line is invalid by Xen EFI and just exits the boot.

Resolution:

Create a "patched" initramfs-linux.img file:

# cat /boot/intel-ucode.img /boot/initramfs-linux.img > /boot/intel-ucode_initramfs-linux.img

And then change xen.cfg to use this new patched ramdisk.

You can verify the fix with:

$ sudo xl dmesg | grep microcode
(XEN) microcode: CPU0 updated from revision 0x28 to 0x32, date = 2018-05-11
(XEN) microcode: CPU2 updated from revision 0x28 to 0x32, date = 2018-05-11

The bbs discussion above is to figure out the best place to capture this information.

ArthurBorsboom commented on 2018-10-01 07:56 (UTC)

I confirm the error message reported by sniper7kills: "free(): invalid pointer".

sniper7kills commented on 2018-09-30 06:32 (UTC)

To generate the error I went to tools/firmware/hvmloader and ran make while using the latest version of acpica

make -C ../../libacpi  ACPI_BUILD_DIR=/storage/xen/src/xen-4.11.0/tools/firmware/hvmloader DSDT_FILES="dsdt_anycpu.c dsdt_15cpu.c dsdt_anycpu_qemu_xen.c"
make[1]: Entering directory '/storage/xen/src/xen-4.11.0/tools/libacpi'
gcc -Wall -Werror -Wstrict-prototypes -O2 -fomit-frame-pointer -fno-strict-aliasing -Wdeclaration-after-statement -DCONFIG_X86 -I/storage/xen/src/xen-4.11.0/tools/libacpi/../../tools/include -D__XEN_TOOLS__ -o /storage/xen/src/xen-4.11.0/tools/firmware/hvmloader/mk_dsdt mk_dsdt.c
# Remove last bracket
awk 'NR > 1 {print s} {s=$0}' dsdt.asl > /storage/xen/src/xen-4.11.0/tools/firmware/hvmloader/dsdt_anycpu.asl.tmp
cat dsdt_acpi_info.asl >> /storage/xen/src/xen-4.11.0/tools/firmware/hvmloader/dsdt_anycpu.asl.tmp
/storage/xen/src/xen-4.11.0/tools/firmware/hvmloader/mk_dsdt --debug=n --maxcpu any  >> /storage/xen/src/xen-4.11.0/tools/firmware/hvmloader/dsdt_anycpu.asl.tmp
mv -f /storage/xen/src/xen-4.11.0/tools/firmware/hvmloader/dsdt_anycpu.asl.tmp /storage/xen/src/xen-4.11.0/tools/firmware/hvmloader/dsdt_anycpu.asl
iasl -vs -p /storage/xen/src/xen-4.11.0/tools/firmware/hvmloader/dsdt_anycpu.tmp -tc /storage/xen/src/xen-4.11.0/tools/firmware/hvmloader/dsdt_anycpu.asl
free(): invalid pointer
make[1]: *** [Makefile:78: /storage/xen/src/xen-4.11.0/tools/firmware/hvmloader/dsdt_anycpu.c] Aborted (core dumped)
make[1]: Leaving directory '/storage/xen/src/xen-4.11.0/tools/libacpi'
make: *** [Makefile:72: acpi] Error 2

sniper7kills commented on 2018-09-30 06:08 (UTC)

Unlikely that this is a xen issue; but building fails when using the latest acpica package.

It was something to do with the hvmloader and unable to call free() due to an invalid pointer.

Downgrading acpica to version 20180629 allows the package to compile.

Once I recompile xen to fix my libiscsi issue, I'll upgrade acpica again to try and provide more information.

alaricljs commented on 2018-08-01 00:53 (UTC)

Orphaned package removal routine* breaks this package. Please fix your depends/makedepends so that they are accurate.

*https://wiki.archlinux.org/index.php/Pacman/Tips_and_tricks#Removing_unused_packages_.28orphans.29

Thanks!

mbroemme commented on 2018-07-10 11:10 (UTC)

4.11.0 is available and I will test it till next week and update PKGBUILD

k96hkh commented on 2018-07-07 11:01 (UTC)

@mbroemme: No problem, thanks for reply and for your work on xen package. Have an awesome weekend!

mbroemme commented on 2018-07-06 11:57 (UTC)

@k96hkh: I believe xen 4.11.0 will come out in the next 2 weeks. Is it okay to wait this 2 weeks and I will update the PKGBUILD as soon as 4.11.0 is out.

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