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Subject[PATCH] Prevent reserving RAM in the region already reserved by BIOS
From
Does it make sense to prevent looking for stolen RAM below the ISA section.


Signed-off-by: Mathieu Rondonneau <mathieu.rondonneau@gmail.com>
---
arch/x86/kernel/e820.c | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/arch/x86/kernel/e820.c b/arch/x86/kernel/e820.c
index 7bca3c6..322c9c3 100644
--- a/arch/x86/kernel/e820.c
+++ b/arch/x86/kernel/e820.c
@@ -1156,6 +1156,8 @@ void __init e820_reserve_resources_late(void)
end = MAX_RESOURCE_SIZE;
if (start >= end)
continue;
+ if (end < ISA_START_ADDRESS)
+ continue;
printk(KERN_DEBUG "reserve RAM buffer: %016llx - %016llx ",
start, end);
reserve_region_with_split(&iomem_resource, start, end,
--
1.6.3.3

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