kernel.git/arch/mips/kernel/traps.c, branch linux-2.6.21.y

[MIPS] Fix BUG(), BUG_ON() handling

2007-04-20T13:58:37Z

With commit 63dc68a8cf60cb110b147dab1704d990808b39e2, kernel can not handle BUG() and BUG_ON() properly since get_user() returns false for kernel code. Use __get_user() to skip unnecessary access_ok(). This patch also make BRK_BUG code encoded in the TNE instruction. Signed-off-by: Atsushi Nemoto Signed-off-by: Ralf Baechle

[MIPS] Disallow CpU exception in kernel again.

2007-04-20T13:58:37Z

The commit 4d40bff7110e9e1a97ff8c01bdd6350e9867cc10 ("Allow CpU exception in kernel partially") was broken. The commit was to fix theoretical problem but broke usual case. Revert it for now. Signed-off-by: Atsushi Nemoto Signed-off-by: Ralf Baechle

[MIPS] FPU ownership management & preemption fixes

2007-03-17T01:03:26Z

Signed-off-by: Atsushi Nemoto Signed-off-by: Ralf Baechle

[MIPS] Add basic SMARTMIPS ASE support

2007-02-22T00:50:44Z

This patch adds trivial support for SMARTMIPS extension. This extension is currently implemented by 4KS[CD] CPUs. Basically it saves/restores ACX register, which is part of the SMARTMIPS ASE, when needed. This patch does *not* add any support for Smartmips MMU features. Futhermore this patch does not add explicit support for 4KS[CD] CPUs since they are respectively mips32 and mips32r2 compliant. So with the current processor configuration, a platform that has such CPUs needs to select both configs: CPU_HAS_SMARTMIPS SYS_HAS_CPU_MIPS32_R[12] This is due to the processor configuration which is mixing up all the architecture variants and the processor types. The drawback of this, is that we currently pass '-march=mips32' option to gcc when building a kernel instead of '-march=4ksc' for 4KSC case. This can lead to a kernel image a little bit bigger than required. Signed-off-by: Franck Bui-Huu Signed-off-by: Ralf Baechle

[MIPS] Fix double signal on trap and break instruction

2007-02-20T17:11:55Z

This commit broke gdb, since any BREAK or TRAP instruction cause SIGSEGV. Signed-off-by: Atsushi Nemoto Signed-off-by: Ralf Baechle

[MIPS] Make __declare_dbe_table static and avoid it getting optimized away

2007-02-18T21:31:36Z

Signed-off-by: Ralf Baechle

[MIPS] Use conditional traps for BUG_ON on MIPS II and better.

2006-11-30T01:14:50Z

This shaves of around 4kB and a few cycles for the average kernel that has CONFIG_BUG enabled. Signed-off-by: Ralf Baechle

[MIPS] Work around bogus gcc warnings.

2006-11-30T01:14:47Z

Signed-off-by: Ralf Baechle

[MIPS] Fast path for rdhwr emulation for TLS

2006-11-30T01:14:44Z

Add special short path for emulationg RDHWR which is used to support TLS. Add an extra prologue for cpu_has_vtag_icache case. Signed-off-by: Atsushi Nemoto Signed-off-by: Ralf Baechle

[MIPS] Fix warning of printk format in mips_srs_init()

2006-10-31T20:13:21Z

arch/mips/kernel/traps.c:1115: warning: int format, long unsigned int arg (arg 2) Signed-off-by: Yoichi Yuasa Signed-off-by: Ralf Baechle