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authorKumar Gala <galak@kernel.crashing.org>2007-02-07 01:13:32 -0600
committerKumar Gala <galak@kernel.crashing.org>2007-02-07 01:13:32 -0600
commit04903a30a327513b97c1271fc6bc4dad6502d1b8 (patch)
tree9761b3fbe0606102ee47d5fed12a50b9c9931280 /arch/arm/vfp/vfphw.S
parent8209003547c4b1006943eac8dc6c1fb6493cafda (diff)
[POWERPC] Enable interrupts if we are doing fp math emulation
Anytime we are emulating an instruction we are going to be doing some form of get_user() to get the instruction image to decode. Since get_user() might sleep we need to ensure we have interrupts enabled or we might see something like: Debug: sleeping function called from invalid context at arch/powerpc/kernel/traps.c:697 in_atomic():0, irqs_disabled():1 Call Trace: [D6023EB0] [C0007F84] show_stack+0x58/0x174 (unreliable) [D6023EE0] [C0022C34] __might_sleep+0xbc/0xd0 [D6023EF0] [C000D158] program_check_exception+0x1d8/0x4fc [D6023F40] [C000E744] ret_from_except_full+0x0/0x4c --- Exception: 700 at 0x102a7100 LR = 0xdb9ef04 However, we want to ensure that interrupts are disabled when handling a trap exception that might be used for a kernel breakpoint. This is why ProgramCheck is marked as EXC_XFER_STD instead of EXC_XFER_EE. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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