[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Xen-devel] x86_64 platform : addresses type
Several addresses are actually on 32 bits, such as in typedef struct { u32 flags; u32 mem_lower; u32 mem_upper; u32 boot_device; u32 cmdline; u32 mods_count; u32 mods_addr; union { aout_symbol_table_t aout_sym; elf_section_header_table_t elf_sec; } u; u32 mmap_length; u32 mmap_addr; } multiboot_info_tHowever, on x86_64 using gcc, addresses as well as unsigned long are 64 bits long. It seems that luckily mmap_addr is below 2*32-1, making the u32 type acceptable so far (for instance in function __start_xen, where the memory map is turned into another structure) but what would it cost to change it into u64 ?After all, the multiboot specification (page 18) has 'unsigned long' instead of u32 here. _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel
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