[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Bug 1811888] Re: Qemu refuses to multiboot Elf64 kernels
From: |
Philippe Mathieu-Daudé |
Subject: |
[Bug 1811888] Re: Qemu refuses to multiboot Elf64 kernels |
Date: |
Sun, 09 May 2021 16:11:04 -0000 |
This is an automated cleanup. This bug report has been moved to QEMU's
new bug tracker on gitlab.com and thus gets marked as 'invalid' now.
Please continue with the discussion here:
https://gitlab.com/qemu-project/qemu/-/issues/243
** Changed in: qemu
Status: New => Invalid
** Bug watch added: gitlab.com/qemu-project/qemu/-/issues #243
https://gitlab.com/qemu-project/qemu/-/issues/243
--
You received this bug notification because you are a member of qemu-
devel-ml, which is subscribed to QEMU.
https://bugs.launchpad.net/bugs/1811888
Title:
Qemu refuses to multiboot Elf64 kernels
Status in QEMU:
Invalid
Bug description:
Qemu does not multiboot Elf64 bit kernels when emulating x86_64
systems. This is unfortunate because it renders the `-kernel` option
quite useless. It's true that a multiboot compatible bootloader puts
you in protected mode by default, and you have to set up the long mode
yourself. While it is easy to put such 32-bit bootstrap code in a 64
bit binary, it is not possible to compile a 64 bit kernel into a 32
bit binary.
After quick search, it turned out that loading 64 bit elf binaries has
been disabled to be compatible with GRUB. However, since that time,
both GRUB and Syslinux load 64 bit ELF kernels just fine, which makes
qemu incompatible with them. Furthermore, it seems that this feature
does and has always worked fine and that people have since submitted
patches to re-enable it.
https://patchwork.ozlabs.org/patch/62142/
https://patchwork.kernel.org/patch/9770523/
Please consider applying the attached patch.
Best Regards,
Lukasz Janyst
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1811888/+subscriptions
[Prev in Thread] |
Current Thread |
[Next in Thread] |
- [Bug 1811888] Re: Qemu refuses to multiboot Elf64 kernels,
Philippe Mathieu-Daudé <=