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| author | Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com> | 2010-11-30 22:22:28 -0800 |
|---|---|---|
| committer | H. Peter Anvin <hpa@linux.intel.com> | 2010-12-13 16:53:32 -0800 |
| commit | 7f7fbf45c6b748074546f7f16b9488ca71de99c1 (patch) | |
| tree | 43f3a4c4bc487be87342967271cc258502da2092 /tools/perf/scripts | |
| parent | x86, vt-d: Fix the vt-d fault handling irq migration in the x2apic mode (diff) | |
| download | linux-7f7fbf45c6b748074546f7f16b9488ca71de99c1.tar.gz linux-7f7fbf45c6b748074546f7f16b9488ca71de99c1.zip | |
x86: Enable the intr-remap fault handling after local APIC setup
Interrupt-remapping gets enabled very early in the boot, as it determines the
apic mode that the processor can use. And the current code enables the vt-d
fault handling before the setup_local_APIC(). And hence the APIC LDR registers
and data structure in the memory may not be initialized. So the vt-d fault
handling in logical xapic/x2apic modes were broken.
Fix this by enabling the vt-d fault handling in the end_local_APIC_setup()
A cleaner fix of enabling fault handling while enabling intr-remapping
will be addressed for v2.6.38. [ Enabling intr-remapping determines the
usage of x2apic mode and the apic mode determines the fault-handling
configuration. ]
Signed-off-by: Kenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
LKML-Reference: <20101201062244.541996375@intel.com>
Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com>
Cc: stable@kernel.org [v2.6.32+]
Acked-by: Chris Wright <chrisw@sous-sol.org>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Diffstat (limited to 'tools/perf/scripts')
0 files changed, 0 insertions, 0 deletions