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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6 

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc-2.6:
  kbuild: add ARCH=sparc32 target
  sparc32: fix build failure on CONFIG_SPARC_LEON
  sparc: Fixed random SPARC/LEON SMP CPU Stuck problem.
  sparc32: remove CONFIG_HAVE_PERF_EVENTS option
  sparc: don't #include asm/system.h in asm/jump_label.h
  sparc32: Fix unaligned stack handling on trap return.
  sparc: keep calling do_signal() as long as pending signals remain
This commit is contained in:
Linus Torvalds 2010-10-29 08:03:48 -07:00
parent 302f5bc544 e69f58c037
commit c07724e5b8
8 changed files with 25 additions and 44 deletions
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3
Makefile
View File

@ -204,6 +204,9 @@ ifeq ($(ARCH),x86_64)
endif
# Additional ARCH settings for sparc
ifeq ($(ARCH),sparc32)
SRCARCH := sparc
endif
ifeq ($(ARCH),sparc64)
SRCARCH := sparc
endif

3
arch/sparc/Kconfig
View File

@ -22,8 +22,6 @@ config SPARC
select RTC_CLASS
select RTC_DRV_M48T59
select HAVE_IRQ_WORK
select HAVE_PERF_EVENTS
select PERF_USE_VMALLOC
select HAVE_DMA_ATTRS
select HAVE_DMA_API_DEBUG
select HAVE_ARCH_JUMP_LABEL
@ -50,7 +48,6 @@ config SPARC64
select RTC_DRV_BQ4802
select RTC_DRV_SUN4V
select RTC_DRV_STARFIRE
select HAVE_IRQ_WORK
select HAVE_PERF_EVENTS
select PERF_USE_VMALLOC

1
arch/sparc/include/asm/jump_label.h
View File

@ -4,7 +4,6 @@
#ifdef __KERNEL__
#include <linux/types.h>
#include <asm/system.h>
#define JUMP_LABEL_NOP_SIZE 4

4
arch/sparc/kernel/irq_32.c
View File

@ -365,7 +365,7 @@ static int request_fast_irq(unsigned int irq,
unsigned long flags;
unsigned int cpu_irq;
int ret;
#ifdef CONFIG_SMP
#if defined CONFIG_SMP && !defined CONFIG_SPARC_LEON
struct tt_entry *trap_table;
extern struct tt_entry trapbase_cpu1, trapbase_cpu2, trapbase_cpu3;
#endif
@ -425,7 +425,7 @@ static int request_fast_irq(unsigned int irq,
table[SP_TRAP_IRQ1+(cpu_irq-1)].inst_four = SPARC_NOP;
INSTANTIATE(sparc_ttable)
#ifdef CONFIG_SMP
#if defined CONFIG_SMP && !defined CONFIG_SPARC_LEON
trap_table = &trapbase_cpu1; INSTANTIATE(trap_table)
trap_table = &trapbase_cpu2; INSTANTIATE(trap_table)
trap_table = &trapbase_cpu3; INSTANTIATE(trap_table)

4
arch/sparc/kernel/leon_smp.c
View File

@ -56,8 +56,8 @@ void __init leon_configure_cache_smp(void);
static inline unsigned long do_swap(volatile unsigned long *ptr,
unsigned long val)
{
__asm__ __volatile__("swapa [%1] %2, %0\n\t" : "=&r"(val)
: "r"(ptr), "i"(ASI_LEON_DCACHE_MISS)
__asm__ __volatile__("swapa [%2] %3, %0\n\t" : "=&r"(val)
: "0"(val), "r"(ptr), "i"(ASI_LEON_DCACHE_MISS)
: "memory");
return val;
}

6
arch/sparc/kernel/rtrap_32.S
View File

@ -78,9 +78,9 @@ signal_p:
call do_notify_resume
add %sp, STACKFRAME_SZ, %o0 ! pt_regs ptr
/* Fall through. */
ld [%sp + STACKFRAME_SZ + PT_PSR], %t_psr
clr %l6
b signal_p
ld [%curptr + TI_FLAGS], %g2
ret_trap_continue:
sethi %hi(PSR_SYSCALL), %g1
andn %t_psr, %g1, %t_psr

36
arch/sparc/kernel/rtrap_64.S
View File

@ -34,37 +34,9 @@ __handle_preemption:
__handle_user_windows:
call fault_in_user_windows
wrpr %g0, RTRAP_PSTATE, %pstate
wrpr %g0, RTRAP_PSTATE_IRQOFF, %pstate
/* Redo sched+sig checks */
ldx [%g6 + TI_FLAGS], %l0
andcc %l0, _TIF_NEED_RESCHED, %g0
ba,pt %xcc, __handle_preemption_continue
wrpr %g0, RTRAP_PSTATE_IRQOFF, %pstate
be,pt %xcc, 1f
nop
call schedule
wrpr %g0, RTRAP_PSTATE, %pstate
wrpr %g0, RTRAP_PSTATE_IRQOFF, %pstate
ldx [%g6 + TI_FLAGS], %l0
1: andcc %l0, _TIF_DO_NOTIFY_RESUME_MASK, %g0
be,pt %xcc, __handle_user_windows_continue
nop
mov %l5, %o1
add %sp, PTREGS_OFF, %o0
mov %l0, %o2
call do_notify_resume
wrpr %g0, RTRAP_PSTATE, %pstate
wrpr %g0, RTRAP_PSTATE_IRQOFF, %pstate
/* Signal delivery can modify pt_regs tstate, so we must
* reload it.
*/
ldx [%sp + PTREGS_OFF + PT_V9_TSTATE], %l1
sethi %hi(0xf << 20), %l4
and %l1, %l4, %l4
ba,pt %xcc, __handle_user_windows_continue
andn %l1, %l4, %l1
__handle_userfpu:
rd %fprs, %l5
andcc %l5, FPRS_FEF, %g0
@ -87,7 +59,7 @@ __handle_signal:
ldx [%sp + PTREGS_OFF + PT_V9_TSTATE], %l1
sethi %hi(0xf << 20), %l4
and %l1, %l4, %l4
ba,pt %xcc, __handle_signal_continue
ba,pt %xcc, __handle_preemption_continue
andn %l1, %l4, %l1
/* When returning from a NMI (%pil==15) interrupt we want to
@ -177,11 +149,9 @@ __handle_preemption_continue:
bne,pn %xcc, __handle_preemption
andcc %l0, _TIF_DO_NOTIFY_RESUME_MASK, %g0
bne,pn %xcc, __handle_signal
__handle_signal_continue:
ldub [%g6 + TI_WSAVED], %o2
brnz,pn %o2, __handle_user_windows
nop
__handle_user_windows_continue:
sethi %hi(TSTATE_PEF), %o0
andcc %l1, %o0, %g0

12
arch/sparc/mm/fault_32.c
View File

@ -539,6 +539,12 @@ do_sigbus:
__do_fault_siginfo(BUS_ADRERR, SIGBUS, tsk->thread.kregs, address);
}
static void check_stack_aligned(unsigned long sp)
{
if (sp & 0x7UL)
force_sig(SIGILL, current);
}
void window_overflow_fault(void)
{
unsigned long sp;
@ -547,6 +553,8 @@ void window_overflow_fault(void)
if(((sp + 0x38) & PAGE_MASK) != (sp & PAGE_MASK))
force_user_fault(sp + 0x38, 1);
force_user_fault(sp, 1);
check_stack_aligned(sp);
}
void window_underflow_fault(unsigned long sp)
@ -554,6 +562,8 @@ void window_underflow_fault(unsigned long sp)
if(((sp + 0x38) & PAGE_MASK) != (sp & PAGE_MASK))
force_user_fault(sp + 0x38, 0);
force_user_fault(sp, 0);
check_stack_aligned(sp);
}
void window_ret_fault(struct pt_regs *regs)
@ -564,4 +574,6 @@ void window_ret_fault(struct pt_regs *regs)
if(((sp + 0x38) & PAGE_MASK) != (sp & PAGE_MASK))
force_user_fault(sp + 0x38, 0);
force_user_fault(sp, 0);
check_stack_aligned(sp);
}