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| author | Zhigang Lu | 2014-01-27 09:25:28 +0100 |
|---|---|---|
| committer | Chris Metcalf | 2014-03-07 17:19:48 +0100 |
| commit | ba67823163c963de7f1f2d87526c9c87f3a3ea0b (patch) | |
| tree | 908c8edc92f82b4565ee0d36003d4b3b2afb0c63 /arch/tile/kernel/intvec_32.S | |
| parent | tile: Add support for handling PMC hardware (diff) | |
| download | kernel-qcow2-linux-ba67823163c963de7f1f2d87526c9c87f3a3ea0b.tar.gz kernel-qcow2-linux-ba67823163c963de7f1f2d87526c9c87f3a3ea0b.tar.xz kernel-qcow2-linux-ba67823163c963de7f1f2d87526c9c87f3a3ea0b.zip | |
tile: Enable NMIs on return from handle_nmi() without errors
NMI interrupts mask ALL interrupts before calling the handler,
so we need to unmask NMIs according to the value handle_nmi() returns.
If it returns zero, the NMIs should be re-enabled; if it returns
a non-zero error, the NMIs should be disabled.
Signed-off-by: Zhigang Lu <zlu@tilera.com>
Signed-off-by: Chris Metcalf <cmetcalf@tilera.com>
Diffstat (limited to 'arch/tile/kernel/intvec_32.S')
| -rw-r--r-- | arch/tile/kernel/intvec_32.S | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/arch/tile/kernel/intvec_32.S b/arch/tile/kernel/intvec_32.S index 605ffbda44ff..cdbda45a4e4b 100644 --- a/arch/tile/kernel/intvec_32.S +++ b/arch/tile/kernel/intvec_32.S @@ -946,6 +946,13 @@ STD_ENTRY(interrupt_return) bzt r30, .Lrestore_regs 3: + /* We are relying on INT_PERF_COUNT at 33, and AUX_PERF_COUNT at 48 */ + { + moveli r0, lo16(1 << (INT_PERF_COUNT - 32)) + bz r31, .Lrestore_regs + } + auli r0, r0, ha16(1 << (INT_AUX_PERF_COUNT - 32)) + mtspr SPR_INTERRUPT_MASK_RESET_K_1, r0 /* * We now commit to returning from this interrupt, since we will be @@ -1171,6 +1178,10 @@ handle_nmi: PTREGS_PTR(r0, PTREGS_OFFSET_BASE) } FEEDBACK_REENTER(handle_nmi) + { + movei r30, 1 + seq r31, r0, zero + } j interrupt_return STD_ENDPROC(handle_nmi) |