From 433cab9d95480b29d5fa76f02686d16adaf38db2 Mon Sep 17 00:00:00 2001 From: Nilay Vaish Date: Thu, 28 Mar 2013 09:34:15 -0500 Subject: [PATCH] x86: create space in bios memory map As of now, we mark the top 1MB of memory space as unusable. Part of it is actually usable and is required to be marked so by some of the newer versions of linux kernel. This patch marks the top 639KB as usable. This value was chosen by looking at QEMU's output for bios memory map. --- configs/common/FSConfig.py | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/configs/common/FSConfig.py b/configs/common/FSConfig.py index 99b5c7967..3a7a50839 100644 --- a/configs/common/FSConfig.py +++ b/configs/common/FSConfig.py @@ -536,7 +536,8 @@ def makeLinuxX86System(mem_mode, numCPUs = 1, mdesc = None, Ruby = False): self.e820_table.entries = \ [ # Mark the first megabyte of memory as reserved - X86E820Entry(addr = 0, size = '1MB', range_type = 2), + X86E820Entry(addr = 0, size = '639kB', range_type = 1), + X86E820Entry(addr = 0x9fc00, size = '385kB', range_type = 2), # Mark the rest as available X86E820Entry(addr = 0x100000, size = '%dB' % (phys_mem_size - 0x100000), -- 2.30.2