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| author | Will Deacon <will.deacon@arm.com> | 2013-04-07 21:36:11 +1200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2013-04-07 12:59:30 -0700 |
| commit | e20800fd5cec2a75639a32e956b1cdc023cb87ce (patch) | |
| tree | d721b26e6ec84eec9a9e6330f7602a10e016903d /arch/x86/kernel/test_nx.c | |
| parent | cd8d2331756751b6aeb855a3c9cb0a92fbd9c725 (diff) | |
| download | linux-e20800fd5cec2a75639a32e956b1cdc023cb87ce.tar.bz2 | |
alpha: irq: run all handlers with interrupts disabled
Linux has expected that interrupt handlers are executed with local
interrupts disabled for a while now, so ensure that this is the case on
Alpha even for non-device interrupts such as IPIs.
Without this patch, secondary boot results in the following backtrace:
warning: at kernel/softirq.c:139 __local_bh_enable+0xb8/0xd0()
trace:
__local_bh_enable+0xb8/0xd0
irq_enter+0x74/0xa0
scheduler_ipi+0x50/0x100
handle_ipi+0x84/0x260
do_entint+0x1ac/0x2e0
irq_exit+0x60/0xa0
handle_irq+0x98/0x100
do_entint+0x2c8/0x2e0
ret_from_sys_call+0x0/0x10
load_balance+0x3e4/0x870
cpu_idle+0x24/0x80
rcu_eqs_enter_common.isra.38+0x0/0x120
cpu_idle+0x40/0x80
rest_init+0xc0/0xe0
_stext+0x1c/0x20
A similar dump occurs if you try to reboot using magic-sysrq.
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Reviewed-by: Matt Turner <mattst88@gmail.com>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Michael Cree <mcree@orcon.net.nz>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/x86/kernel/test_nx.c')
0 files changed, 0 insertions, 0 deletions