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Because of the size limits of struct boot_params (zero page), the maximum number of E820 memory map entries can be passed to kernel is 128. As pointed by Paul Jackson, there is some machine produced by SGI with so many nodes that the number of E820 memory map entries is more than 128. To enabling Linux kernel on these system, a new setup data type named SETUP_E820_EXT is defined to pass additional memory map entries to Linux kernel. This patch is based on x86/auto-latest branch of git-x86 tree and has been tested on x86_64 and i386 platform. Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> |
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Kconfig |