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| author | Maarten Lankhorst <m.b.lankhorst@gmail.com> | 2011-06-14 17:53:09 (GMT) |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2011-06-18 20:48:49 (GMT) |
| commit | 7d68dc3f1003a38948c55c803c32d1989dd49198 (patch) | |
| tree | 3c93edddda1ee71b9ce4aeeaa133bf627f7d691e /arch/x86/mm | |
| parent | c11760c6d80ab6aa20e383cf378a7287305f591c (diff) | |
| download | linux-7d68dc3f1003a38948c55c803c32d1989dd49198.tar.xz | |
x86, efi: Do not reserve boot services regions within reserved areas
Commit 916f676f8dc started reserving boot service code since some systems
require you to keep that code around until SetVirtualAddressMap is called.
However, in some cases those areas will overlap with reserved regions.
The proper medium-term fix is to fix the bootloader to prevent the
conflicts from occurring by moving the kernel to a better position,
but the kernel should check for this possibility, and only reserve regions
which can be reserved.
Signed-off-by: Maarten Lankhorst <m.b.lankhorst@gmail.com>
Link: http://lkml.kernel.org/r/4DF7A005.1050407@gmail.com
Acked-by: Matthew Garrett <mjg@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/mm')
| -rw-r--r-- | arch/x86/mm/memblock.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/x86/mm/memblock.c b/arch/x86/mm/memblock.c index aa11693..992da5e 100644 --- a/arch/x86/mm/memblock.c +++ b/arch/x86/mm/memblock.c @@ -8,7 +8,7 @@ #include <linux/range.h> /* Check for already reserved areas */ -static bool __init check_with_memblock_reserved_size(u64 *addrp, u64 *sizep, u64 align) +bool __init memblock_x86_check_reserved_size(u64 *addrp, u64 *sizep, u64 align) { struct memblock_region *r; u64 addr = *addrp, last; @@ -59,7 +59,7 @@ u64 __init memblock_x86_find_in_range_size(u64 start, u64 *sizep, u64 align) if (addr >= ei_last) continue; *sizep = ei_last - addr; - while (check_with_memblock_reserved_size(&addr, sizep, align)) + while (memblock_x86_check_reserved_size(&addr, sizep, align)) ; if (*sizep) |