On Sun, Nov 26, 2000 at 11:29:32PM +0100, Pavel Machek wrote:
> Is this different on x86-64 in long mode?
Yes, in 64bit mode ss:rsp is restore unconditionally. In compatibility and
legacy modes it's restored only if the CPL changes.
kernel never runs in compatibility mode (and userspace never runs iret) so in
kernel_thread we know x86-64 always restores ss:rsp from the stack.
You should find this as a familiar behaviour as you just tried to pass a stack
via kernel_thread in your latest patch against cvs :).
Andrea
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This archive was generated by hypermail 2b29 : Thu Nov 30 2000 - 21:00:16 EST