Messages in this thread | | | From | Jacob Shin <> | Subject | [PATCH 0/5] Only create direct mappings for E820_RAM regions | Date | Thu, 9 Aug 2012 16:23:04 -0500 |
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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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