28 Apr
2015
28 Apr
'15
10:43 p.m.
On Tue Apr 28, 2015 at 11:27:31 +0800, watermirror wrote:
hi, after entered the entry_sys_fast_ipc_c through sysenter, why the first instruction is 'pop %esp'?
With sysenter, kernel is always entered on the same stack memory (see MSR_SYSENTER_ESP), so the current stack is stored there and loaded via the pop.
Adam
--
Adam adam@os.inf.tu-dresden.de
Lackorzynski http://os.inf.tu-dresden.de/~adam/