diff options
| author | Peter Zijlstra <a.p.zijlstra@chello.nl> | 2007-11-13 08:46:02 +0100 |
|---|---|---|
| committer | Adrian Bunk <bunk@kernel.org> | 2007-11-13 08:46:02 +0100 |
| commit | 9c78b87bdfc519a9b73300c288a70cd4ee9f79c3 (patch) | |
| tree | c75b6d6e300234c23a16827b5777224a0617ce6a | |
| parent | 08cdcb569ebc93e60861931f113e59814d0f8ef7 (diff) | |
i386: fixup TRACE_IRQ breakage
The TRACE_IRQS_ON function in iret_exc: calls a C function without
ensuring that the segments are set properly. Move the trace function and
the enabling of interrupt into the C stub.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Adrian Bunk <bunk@kernel.org>
| -rw-r--r-- | arch/i386/kernel/entry.S | 1 | ||||
| -rw-r--r-- | arch/i386/kernel/traps.c | 10 |
2 files changed, 6 insertions, 5 deletions
diff --git a/arch/i386/kernel/entry.S b/arch/i386/kernel/entry.S index a14218c9ec6..cff11311e74 100644 --- a/arch/i386/kernel/entry.S +++ b/arch/i386/kernel/entry.S @@ -261,7 +261,6 @@ restore_nocheck: 1: iret .section .fixup,"ax" iret_exc: - sti pushl $0 # no error code pushl $do_iret_error jmp error_code diff --git a/arch/i386/kernel/traps.c b/arch/i386/kernel/traps.c index b814dbdcc91..183e4b323a5 100644 --- a/arch/i386/kernel/traps.c +++ b/arch/i386/kernel/traps.c @@ -441,10 +441,12 @@ fastcall void do_##name(struct pt_regs * regs, long error_code) \ do_trap(trapnr, signr, str, 0, regs, error_code, NULL); \ } -#define DO_ERROR_INFO(trapnr, signr, str, name, sicode, siaddr) \ +#define DO_ERROR_INFO(trapnr, signr, str, name, sicode, siaddr, irq) \ fastcall void do_##name(struct pt_regs * regs, long error_code) \ { \ siginfo_t info; \ + if (irq) \ + local_irq_enable(); \ info.si_signo = signr; \ info.si_errno = 0; \ info.si_code = sicode; \ @@ -484,13 +486,13 @@ DO_VM86_ERROR( 3, SIGTRAP, "int3", int3) #endif DO_VM86_ERROR( 4, SIGSEGV, "overflow", overflow) DO_VM86_ERROR( 5, SIGSEGV, "bounds", bounds) -DO_ERROR_INFO( 6, SIGILL, "invalid opcode", invalid_op, ILL_ILLOPN, regs->eip) +DO_ERROR_INFO( 6, SIGILL, "invalid opcode", invalid_op, ILL_ILLOPN, regs->eip, 0) DO_ERROR( 9, SIGFPE, "coprocessor segment overrun", coprocessor_segment_overrun) DO_ERROR(10, SIGSEGV, "invalid TSS", invalid_TSS) DO_ERROR(11, SIGBUS, "segment not present", segment_not_present) DO_ERROR(12, SIGBUS, "stack segment", stack_segment) -DO_ERROR_INFO(17, SIGBUS, "alignment check", alignment_check, BUS_ADRALN, 0) -DO_ERROR_INFO(32, SIGSEGV, "iret exception", iret_error, ILL_BADSTK, 0) +DO_ERROR_INFO(17, SIGBUS, "alignment check", alignment_check, BUS_ADRALN, 0, 0) +DO_ERROR_INFO(32, SIGSEGV, "iret exception", iret_error, ILL_BADSTK, 0, 1) fastcall void __kprobes do_general_protection(struct pt_regs * regs, long error_code) |