diff options
| author | Huang, Xiaolan <xiaolan.huang@intel.com> | 2008-05-14 22:18:41 -0400 |
|---|---|---|
| committer | Tony Luck <tony.luck@intel.com> | 2008-05-15 12:54:19 -0400 |
| commit | 839052d27e8db0c1545256fe5827abcd00fb51c5 (patch) | |
| tree | 003839d444943ba8f125846e776b068721da2c8f /lib/iommu-helper.c | |
| parent | 3fb2c74ee20b77affd494c6b8ce7928d0ebbb62e (diff) | |
[IA64] fix personality(PER_LINUX32) performance issue
The patch aims to fix a performance issue for the syscall
personality(PER_LINUX32).
On IA-64 box, the syscall personality (PER_LINUX32) has poor performance
because it failed to find the Linux/x86 execution domain. Then it tried
to load the kernel module however it failed always and it used the default
execution domain PER_LINUX instead. Requesting kernel modules is very
expensive. It caused the performance issue. (see the function
lookup_exec_domain in kernel/exec_domain.c).
To resolve the issue, execution domain Linux/x86 is always registered in
initialization time for IA-64 architecture.
Signed-off-by: Xiaolan Huang <xiaolan.huang@intel.com>
Signed-off-by: Tony Luck <tony.luck@intel.com>
Diffstat (limited to 'lib/iommu-helper.c')
0 files changed, 0 insertions, 0 deletions