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linux/arch/arm64/mm
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Mark Salter 0ceac9e094 efi/arm64: Fix fdt-related memory reservation 
Commit 86c8b27a01:
 "arm64: ignore DT memreserve entries when booting in UEFI mode

prevents early_init_fdt_scan_reserved_mem() from being called for
arm64 kernels booting via UEFI. This was done because the kernel
will use the UEFI memory map to determine reserved memory regions.
That approach has problems in that early_init_fdt_scan_reserved_mem()
also reserves the FDT itself and any node-specific reserved memory.
By chance of some kernel configs, the FDT may be overwritten before
it can be unflattened and the kernel will fail to boot. More subtle
problems will result if the FDT has node specific reserved memory
which is not really reserved.

This patch has the UEFI stub remove the memory reserve map entries
from the FDT as it does with the memory nodes. This allows
early_init_fdt_scan_reserved_mem() to be called unconditionally
so that the other needed reservations are made.

Signed-off-by: Mark Salter <msalter@redhat.com>
Acked-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Acked-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Matt Fleming <matt.fleming@intel.com>
History 2014-09-09 07:51:09 +01:00
..
cache.S arm64: mm: use inner-shareable barriers for inner-shareable maintenance 2014-05-09 17:21:24 +01:00
context.c arm64: Process management 2012-09-17 13:41:58 +01:00
copypage.c arm64: export __cpu_{clear,copy}_user_page functions 2014-07-08 17:30:51 +01:00
dma-mapping.c arm64: Clean up the default pgprot setting 2014-05-09 15:53:37 +01:00
extable.c arm64: MMU fault handling and page table management 2012-09-17 13:41:57 +01:00
fault.c arm64: mm: Implement 4 levels of translation tables 2014-07-23 15:27:40 +01:00
flush.c arm64: mm: Make icache synchronisation logic huge page aware 2014-07-04 14:26:01 +01:00
hugetlbpage.c hugetlb: restrict hugepage_migration_support() to x86_64 2014-06-04 16:53:51 -07:00
init.c efi/arm64: Fix fdt-related memory reservation 2014-09-09 07:51:09 +01:00
ioremap.c arm64: Convert bool ARM64_x_LEVELS to int ARM64_PGTABLE_LEVELS 2014-07-23 15:27:46 +01:00
Makefile arm64: mm: Optimise tlb flush logic where we have >4K granule 2014-05-09 17:00:48 +01:00
mm.h arm64: Remove __flush_dcache_page() 2013-06-07 17:58:30 +01:00
mmap.c mm: remove free_area_cache 2013-07-10 18:11:34 -07:00
mmu.c arm64: mm: Implement 4 levels of translation tables 2014-07-23 15:27:40 +01:00
pgd.c arm64: simplify pgd_alloc 2014-02-05 10:45:07 +00:00
proc-macros.S arm64: mm: use ubfm for dcache_line_size 2014-01-22 16:23:58 +00:00
proc.S arm64: mm: use inner-shareable barriers for inner-shareable maintenance 2014-05-09 17:21:24 +01:00