Hi all,
davej just noticed gcc spitting a complaint about this:
linux/arch/x86-64/kernel/process-xen.c ---
static inline void set_32bit_tls(struct task_struct *t, int tls, u32
addr)
{
 struct user_desc ud = { 
 .base_addr = addr,
 .limit = 0xfffff,
 .contents = (3 << 3), /* user */
 .seg_32bit = 1,
 .limit_in_pages = 1,
 .useable = 1,
 };
 struct n_desc_struct *desc = (void *)t->thread.tls_array;
 desc += tls;
 desc->a = LDT_entry_a(&ud); 
 desc->b = LDT_entry_b(&ud); 
}
where we get an overflow assigning "3 << 3" to ud.contents, which is a
2-bit bitfield defined in include/asm-x86_64/ldt.h:
struct user_desc {
...
 unsigned int contents:2;
...
};
Any idea what the intention was here?
--Stephen
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