[v2,0/2] xen/arm: Enlarge identity map space

Message

Leo Yan Sept. 9, 2023, 8:31 a.m. UTC

The latest Xen fails to boot on ADLink AVA platform.  Alexey Klimov root
caused the issue is related with the commit 1c78d76b67 ("xen/arm64: mm:
Introduce helpers to prepare/enable/disable").

This is because on ADLink AVA platform, it loads Xen hypervisor to the
address above 2TB and hence causes Xen panic:

  (XEN) MODULE[0]: 00000807f6df0000 - 00000807f6f3e000 Xen
  (XEN) MODULE[1]: 00000807f8054000 - 00000807f8056000 Device Tree
  (XEN) MODULE[2]: 00000000fa834000 - 00000000fc5de1d5 Ramdisk
  (XEN) MODULE[3]: 00000000fc5df000 - 00000000ffb3f810 Kernel

To fix this issue, this series is to enlarge identity map space to
127 TiB and tested on Telechips Dolphin5 platform.

Changes from v1:
- Rebased on staging branch (Bertrand);
- Added Alexey Klimov tested tag for patch 01 (Alexey).
- Corrected the printing log with dynamically calculation ID map size.


Leo Yan (2):
  xen/arm: Add macro XEN_VM_MAPPING
  xen/arm: Enlarge identity map space to 127TiB

 xen/arch/arm/arm64/mm.c           | 12 ++++++++----
 xen/arch/arm/include/asm/config.h | 22 ++++++++++++----------
 xen/arch/arm/mm.c                 |  2 +-
 3 files changed, 21 insertions(+), 15 deletions(-)