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authorMaciej W. Rozycki <macro@linux-mips.org>2007-09-18 18:49:08 +0100
committerRalf Baechle <ralf@linux-mips.org>2007-10-11 23:46:04 +0100
commite5d77754c5e1a54f9eb61c03085d7932a0b6b738 (patch)
tree0d48b6f7297c79591707a19cd872535fb3f9de37
parent0f5c90644240cc17d5940fa3594cc51ad1ae7ba7 (diff)
[MIPS] R3000 setup for kernel_thread()
Match the R4000 semantics for the initial state of interrupt/kernel status register flags for the R3000 in kernel_thread(). Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
-rw-r--r--arch/mips/kernel/process.c4
1 files changed, 2 insertions, 2 deletions
diff --git a/arch/mips/kernel/process.c b/arch/mips/kernel/process.c
index e6ce943099a..aadd2cd5778 100644
--- a/arch/mips/kernel/process.c
+++ b/arch/mips/kernel/process.c
@@ -231,8 +231,8 @@ long kernel_thread(int (*fn)(void *), void *arg, unsigned long flags)
regs.cp0_epc = (unsigned long) kernel_thread_helper;
regs.cp0_status = read_c0_status();
#if defined(CONFIG_CPU_R3000) || defined(CONFIG_CPU_TX39XX)
- regs.cp0_status &= ~(ST0_KUP | ST0_IEC);
- regs.cp0_status |= ST0_IEP;
+ regs.cp0_status = (regs.cp0_status & ~(ST0_KUP | ST0_IEP | ST0_IEC)) |
+ ((regs.cp0_status & (ST0_KUC | ST0_IEC)) << 2);
#else
regs.cp0_status |= ST0_EXL;
#endif