From: Julien Grall <jgrall@amazon.com>
Hi all,
This series was originally sent as "xen/arm: mm: Add limited support
for superpages" [1] and finally has grown enough to remove most of
the open-coding mappings in the boot code.
This will help to:
1) Get better compliance with the Arm memory model
2) Pave the way to support other page size (64KB, 16KB)
This is not fully finished (only boot tested on Arm64) but I sent it
early to get more testing and also unblock some of the on-going work
to support static memory allocation for dom0less (see [2]).
There are still a few TODOs:
- Add support for setting the contiguous bits
- Remove 1GB alignment in setup_xenheap_mappings()
- Decide whether we want to provide a common PMAP
Cheers,
[1] <20201119190751.22345-1-julien@xen.org>
[2] <PA4PR08MB6253F49C13ED56811BA5B64E92479@PA4PR08MB6253.eurprd08.prod.outlook.com>
Julien Grall (14):
xen/arm: lpae: Rename LPAE_ENTRIES_MASK_GS to LPAE_ENTRY_MASK_GS
xen/arm: lpae: Use the generic helpers to defined the Xen PT helpers
xen/arm: p2m: Replace level_{orders, masks} arrays with LEVEL_{ORDER,
MASK}
xen/arm: mm: Allow other mapping size in xen_pt_update_entry()
xen/arm: mm: Avoid flushing the TLBs when mapping are inserted
xen/arm: mm: Don't open-code Xen PT update in remove_early_mappings()
xen/arm: mm: Re-implement early_fdt_map() using map_pages_to_xen()
xen/arm32: mm: Check if the virtual address is shared before updating
it
xen/arm32: mm: Re-implement setup_xenheap_mappings() using
map_pages_to_xen()
xen/arm: mm: Allocate xen page tables in domheap rather than xenheap
xen/arm: mm: Allow page-table allocation from the boot allocator
xen/arm: mm: Use the PMAP helpers in xen_{,un}map_table()
xen/arm: mm: Rework setup_xenheap_mappings()
xen/arm: mm: Re-implement setup_frame_table_mappings() with
map_pages_to_xen()
Wei Liu (1):
xen/arm: add Persistent Map (PMAP) infrastructure
xen/arch/arm/Makefile | 1 +
xen/arch/arm/mm.c | 362 +++++++++++++++++------------------
xen/arch/arm/p2m.c | 16 +-
xen/arch/arm/pmap.c | 101 ++++++++++
xen/arch/arm/setup.c | 10 +-
xen/include/asm-arm/config.h | 6 +
xen/include/asm-arm/lpae.h | 83 ++++----
xen/include/asm-arm/page.h | 4 +
xen/include/asm-arm/pmap.h | 10 +
9 files changed, 356 insertions(+), 237 deletions(-)
create mode 100644 xen/arch/arm/pmap.c
create mode 100644 xen/include/asm-arm/pmap.h
--
2.17.1