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| author | David S. Miller | 2005-07-25 04:36:26 +0200 |
|---|---|---|
| committer | David S. Miller | 2005-07-25 04:36:26 +0200 |
| commit | db7d9a4eb700be766cc9f29241483dbb1e748832 (patch) | |
| tree | 48848384df15d9404ceab05867d7f4ef6b1a4bbe /arch/sparc64/kernel/process.c | |
| parent | [SPARC64]: Privatize sun5_timer. (diff) | |
| download | kernel-qcow2-linux-db7d9a4eb700be766cc9f29241483dbb1e748832.tar.gz kernel-qcow2-linux-db7d9a4eb700be766cc9f29241483dbb1e748832.tar.xz kernel-qcow2-linux-db7d9a4eb700be766cc9f29241483dbb1e748832.zip | |
[SPARC64]: Move syscall success and newchild state out of thread flags.
These two bits were accesses non-atomically from assembler
code. So, in order to eliminate any potential races resulting
from that, move these pieces of state into two bytes elsewhere
in struct thread_info.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64/kernel/process.c')
| -rw-r--r-- | arch/sparc64/kernel/process.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/sparc64/kernel/process.c b/arch/sparc64/kernel/process.c index a0cd2b2494d6..cffb1c8ab4fc 100644 --- a/arch/sparc64/kernel/process.c +++ b/arch/sparc64/kernel/process.c @@ -621,8 +621,8 @@ int copy_thread(int nr, unsigned long clone_flags, unsigned long sp, memcpy(child_trap_frame, (((struct sparc_stackf *)regs)-1), (TRACEREG_SZ+STACKFRAME_SZ)); t->flags = (t->flags & ~((0xffUL << TI_FLAG_CWP_SHIFT) | (0xffUL << TI_FLAG_CURRENT_DS_SHIFT))) | - _TIF_NEWCHILD | (((regs->tstate + 1) & TSTATE_CWP) << TI_FLAG_CWP_SHIFT); + t->new_child = 1; t->ksp = ((unsigned long) child_trap_frame) - STACK_BIAS; t->kregs = (struct pt_regs *)(child_trap_frame+sizeof(struct sparc_stackf)); t->fpsaved[0] = 0; |