This is a revision of an earlier attempt, with suggestions and concernes
from previous conversation (https://lkml.org/lkml/2011/12/16/486) taken
into account.
The following patchset creates direct mappings only for E820_RAM regions
between 0 ~ max_low_pfn and 4GB ~ max_pfn. And leaves non-E820_RAM
unmapped.
Jacob Shin (5):
x86: Only direct map addresses that are marked as E820_RAM
x86: find_early_table_space based on memory ranges that are being
mapped
x86: Keep track of direct mapped pfn ranges
x86: Fixup code testing if a pfn is direct mapped
x86: Move enabling of PSE and PGE out of init_memory_mapping
arch/x86/include/asm/page_types.h | 9 ++++
arch/x86/kernel/amd_gart_64.c | 4 +-
arch/x86/kernel/cpu/amd.c | 6 +--
arch/x86/kernel/setup.c | 97 ++++++++++++++++++++++++++++++++++---
arch/x86/mm/init.c | 67 ++++++++++++-------------
arch/x86/mm/init_64.c | 3 +-
arch/x86/platform/efi/efi.c | 8 +--
arch/x86/platform/efi/efi_64.c | 2 +
8 files changed, 139 insertions(+), 57 deletions(-)
--
1.7.9.5
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