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[PATCH v3 00/10] grub-xen: support booting huge pv-domains
From: |
Juergen Gross |
Subject: |
[PATCH v3 00/10] grub-xen: support booting huge pv-domains |
Date: |
Wed, 17 Feb 2016 18:19:27 +0100 |
The Xen hypervisor supports starting a dom0 with large memory (up to
the TB range) by not including the initrd and p2m list in the initial
kernel mapping. Especially the p2m list can grow larger than the
available virtual space in the initial mapping.
The started kernel is indicating the support of each feature via
elf notes.
This series enables grub-xen to do the same as the hypervisor.
Tested with:
- 32 bit domU (kernel not supporting unmapped initrd)
- 32 bit domU (kernel supporting unmapped initrd)
- 1 GB 64 bit domU (kernel supporting unmapped initrd, not p2m)
- 1 GB 64 bit domU (kernel supporting unmapped initrd and p2m)
- 900GB 64 bit domU (kernel supporting unmapped initrd and p2m)
Changes in V3:
- added new patch 1 (free memory in case of error) as requested by
Daniel Kiper
- added new patch 2 (avoid global variables) as requested by Daniel Kiper
- added new patch 3 (use constants for elf notes) as requested by Daniel Kiper
- added new patch 4 (sync with new Xen headers) in order to use constants
in assembly code
- modified patch 9 (was patch 5) to use constants instead of numbers and
added lots of comments to assembly code as requested by Daniel Kiper
Changes in V2:
- rebased patch 5 to current master
Juergen Gross (10):
xen: make xen loader callable multiple times
xen: reduce number of global variables in xen loader
xen: add elfnote.h to avoid using numbers instead of constants
xen: synchronize xen header
xen: factor out p2m list allocation into separate function
xen: factor out allocation of special pages into separate function
xen: factor out allocation of page tables into separate function
xen: add capability to load initrd outside of initial mapping
xen: modify page table construction
xen: add capability to load p2m list outside of kernel mapping
grub-core/lib/i386/xen/relocator.S | 87 ++--
grub-core/lib/x86_64/xen/relocator.S | 134 +++---
grub-core/lib/xen/relocator.c | 25 +-
grub-core/loader/i386/xen.c | 778 +++++++++++++++++++++++------------
grub-core/loader/i386/xen_fileXX.c | 43 +-
include/grub/i386/memory.h | 7 +
include/grub/xen/relocator.h | 6 +-
include/grub/xen_file.h | 3 +
include/xen/arch-x86/xen-x86_32.h | 22 +-
include/xen/arch-x86/xen-x86_64.h | 8 +-
include/xen/elfnote.h | 281 +++++++++++++
include/xen/xen.h | 125 ++++--
12 files changed, 1070 insertions(+), 449 deletions(-)
create mode 100644 include/xen/elfnote.h
--
2.6.2
- [PATCH v3 00/10] grub-xen: support booting huge pv-domains,
Juergen Gross <=
[PATCH v3 06/10] xen: factor out allocation of special pages into separate function, Juergen Gross, 2016/02/17