From bfc32ad09bd5b077aac62f09e24d10374001c07b Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Tue, 15 Sep 2009 09:49:53 +0200 Subject: microblaze: Don't be noisy when userspace causes hardware exceptions Signed-off-by: Michal Simek --- arch/microblaze/kernel/exceptions.c | 31 ++++++++++++++++++++----------- 1 file changed, 20 insertions(+), 11 deletions(-) (limited to 'arch/microblaze/kernel/exceptions.c') diff --git a/arch/microblaze/kernel/exceptions.c b/arch/microblaze/kernel/exceptions.c index 0cb64a31e89..e64a5c7282a 100644 --- a/arch/microblaze/kernel/exceptions.c +++ b/arch/microblaze/kernel/exceptions.c @@ -72,7 +72,8 @@ asmlinkage void full_exception(struct pt_regs *regs, unsigned int type, #endif #if 0 - printk(KERN_WARNING "Exception %02x in %s mode, FSR=%08x PC=%08x ESR=%08x\n", + printk(KERN_WARNING "Exception %02x in %s mode, FSR=%08x PC=%08x " \ + "ESR=%08x\n", type, user_mode(regs) ? "user" : "kernel", fsr, (unsigned int) regs->pc, (unsigned int) regs->esr); #endif @@ -80,42 +81,50 @@ asmlinkage void full_exception(struct pt_regs *regs, unsigned int type, switch (type & 0x1F) { case MICROBLAZE_ILL_OPCODE_EXCEPTION: if (user_mode(regs)) { - printk(KERN_WARNING "Illegal opcode exception in user mode.\n"); + pr_debug(KERN_WARNING "Illegal opcode exception " \ + "in user mode.\n"); _exception(SIGILL, regs, ILL_ILLOPC, addr); return; } - printk(KERN_WARNING "Illegal opcode exception in kernel mode.\n"); + printk(KERN_WARNING "Illegal opcode exception " \ + "in kernel mode.\n"); die("opcode exception", regs, SIGBUS); break; case MICROBLAZE_IBUS_EXCEPTION: if (user_mode(regs)) { - printk(KERN_WARNING "Instruction bus error exception in user mode.\n"); + pr_debug(KERN_WARNING "Instruction bus error " \ + "exception in user mode.\n"); _exception(SIGBUS, regs, BUS_ADRERR, addr); return; } - printk(KERN_WARNING "Instruction bus error exception in kernel mode.\n"); + printk(KERN_WARNING "Instruction bus error exception " \ + "in kernel mode.\n"); die("bus exception", regs, SIGBUS); break; case MICROBLAZE_DBUS_EXCEPTION: if (user_mode(regs)) { - printk(KERN_WARNING "Data bus error exception in user mode.\n"); + pr_debug(KERN_WARNING "Data bus error exception " \ + "in user mode.\n"); _exception(SIGBUS, regs, BUS_ADRERR, addr); return; } - printk(KERN_WARNING "Data bus error exception in kernel mode.\n"); + printk(KERN_WARNING "Data bus error exception " \ + "in kernel mode.\n"); die("bus exception", regs, SIGBUS); break; case MICROBLAZE_DIV_ZERO_EXCEPTION: if (user_mode(regs)) { - printk(KERN_WARNING "Divide by zero exception in user mode\n"); + pr_debug(KERN_WARNING "Divide by zero exception " \ + "in user mode\n"); _exception(SIGILL, regs, ILL_ILLOPC, addr); return; } - printk(KERN_WARNING "Divide by zero exception in kernel mode.\n"); + printk(KERN_WARNING "Divide by zero exception " \ + "in kernel mode.\n"); die("Divide by exception", regs, SIGBUS); break; case MICROBLAZE_FPU_EXCEPTION: - printk(KERN_WARNING "FPU exception\n"); + pr_debug(KERN_WARNING "FPU exception\n"); /* IEEE FP exception */ /* I removed fsr variable and use code var for storing fsr */ if (fsr & FSR_IO) @@ -133,7 +142,7 @@ asmlinkage void full_exception(struct pt_regs *regs, unsigned int type, #ifdef CONFIG_MMU case MICROBLAZE_PRIVILEGED_EXCEPTION: - printk(KERN_WARNING "Privileged exception\n"); + pr_debug(KERN_WARNING "Privileged exception\n"); /* "brk r0,r0" - used as debug breakpoint */ if (get_user(code, (unsigned long *)regs->pc) == 0 && code == 0x980c0000) { -- cgit v1.2.3 From 23902d95c9297fc1e214a705e57d46d69195b6b3 Mon Sep 17 00:00:00 2001 From: Michal Simek Date: Tue, 22 Sep 2009 08:58:47 +0200 Subject: microblaze: Generate correct signal and siginfo for integer div-by-zero Signed-off-by: John Williams --- arch/microblaze/kernel/exceptions.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'arch/microblaze/kernel/exceptions.c') diff --git a/arch/microblaze/kernel/exceptions.c b/arch/microblaze/kernel/exceptions.c index e64a5c7282a..d9f70f83097 100644 --- a/arch/microblaze/kernel/exceptions.c +++ b/arch/microblaze/kernel/exceptions.c @@ -116,7 +116,7 @@ asmlinkage void full_exception(struct pt_regs *regs, unsigned int type, if (user_mode(regs)) { pr_debug(KERN_WARNING "Divide by zero exception " \ "in user mode\n"); - _exception(SIGILL, regs, ILL_ILLOPC, addr); + _exception(SIGILL, regs, FPE_INTDIV, addr); return; } printk(KERN_WARNING "Divide by zero exception " \ -- cgit v1.2.3