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VServer 1.9.2 (patch-2.6.8.1-vs1.9.2.diff)
[linux-2.6.git]
/
arch
/
sparc64
/
mm
/
fault.c
diff --git
a/arch/sparc64/mm/fault.c
b/arch/sparc64/mm/fault.c
index
348f206
..
49c3dd2
100644
(file)
--- a/
arch/sparc64/mm/fault.c
+++ b/
arch/sparc64/mm/fault.c
@@
-207,14
+207,21
@@
outret:
return insn;
}
return insn;
}
-static void do_fault_siginfo(int code, int sig, unsigned long address)
+extern unsigned long compute_effective_address(struct pt_regs *, unsigned int, unsigned int);
+
+static void do_fault_siginfo(int code, int sig, struct pt_regs *regs,
+ unsigned int insn, int fault_code)
{
siginfo_t info;
info.si_code = code;
info.si_signo = sig;
info.si_errno = 0;
{
siginfo_t info;
info.si_code = code;
info.si_signo = sig;
info.si_errno = 0;
- info.si_addr = (void *) address;
+ if (fault_code & FAULT_CODE_ITLB)
+ info.si_addr = (void __user *) regs->tpc;
+ else
+ info.si_addr = (void __user *)
+ compute_effective_address(regs, insn, 0);
info.si_trapno = 0;
force_sig_info(sig, &info, current);
}
info.si_trapno = 0;
force_sig_info(sig, &info, current);
}
@@
-250,7
+257,7
@@
static void do_kernel_fault(struct pt_regs *regs, int si_code, int fault_code,
* in that case.
*/
* in that case.
*/
- if (!(fault_code &
FAULT_CODE_WRITE
) &&
+ if (!(fault_code &
(FAULT_CODE_WRITE|FAULT_CODE_ITLB)
) &&
(insn & 0xc0800000) == 0xc0800000) {
if (insn & 0x2000)
asi = (regs->tstate >> 24);
(insn & 0xc0800000) == 0xc0800000) {
if (insn & 0x2000)
asi = (regs->tstate >> 24);
@@
-295,7
+302,7
@@
static void do_kernel_fault(struct pt_regs *regs, int si_code, int fault_code,
/* The si_code was set to make clear whether
* this was a SEGV_MAPERR or SEGV_ACCERR fault.
*/
/* The si_code was set to make clear whether
* this was a SEGV_MAPERR or SEGV_ACCERR fault.
*/
- do_fault_siginfo(si_code, SIGSEGV,
address
);
+ do_fault_siginfo(si_code, SIGSEGV,
regs, insn, fault_code
);
return;
}
return;
}
@@
-401,6
+408,16
@@
continue_fault:
*/
good_area:
si_code = SEGV_ACCERR;
*/
good_area:
si_code = SEGV_ACCERR;
+
+ /* If we took a ITLB miss on a non-executable page, catch
+ * that here.
+ */
+ if ((fault_code & FAULT_CODE_ITLB) && !(vma->vm_flags & VM_EXEC)) {
+ BUG_ON(address != regs->tpc);
+ BUG_ON(regs->tstate & TSTATE_PRIV);
+ goto bad_area;
+ }
+
if (fault_code & FAULT_CODE_WRITE) {
if (!(vma->vm_flags & VM_WRITE))
goto bad_area;
if (fault_code & FAULT_CODE_WRITE) {
if (!(vma->vm_flags & VM_WRITE))
goto bad_area;
@@
-411,7
+428,8
@@
good_area:
if (tlb_type == spitfire &&
(vma->vm_flags & VM_EXEC) != 0 &&
vma->vm_file != NULL)
if (tlb_type == spitfire &&
(vma->vm_flags & VM_EXEC) != 0 &&
vma->vm_file != NULL)
- set_thread_flag(TIF_BLKCOMMIT);
+ set_thread_fault_code(fault_code |
+ FAULT_CODE_BLKCOMMIT);
} else {
/* Allow reads even for write-only mappings */
if (!(vma->vm_flags & (VM_READ | VM_EXEC)))
} else {
/* Allow reads even for write-only mappings */
if (!(vma->vm_flags & (VM_READ | VM_EXEC)))
@@
-471,7
+489,7
@@
do_sigbus:
* Send a sigbus, regardless of whether we were in kernel
* or user mode.
*/
* Send a sigbus, regardless of whether we were in kernel
* or user mode.
*/
- do_fault_siginfo(BUS_ADRERR, SIGBUS,
address
);
+ do_fault_siginfo(BUS_ADRERR, SIGBUS,
regs, insn, fault_code
);
/* Kernel mode? Handle exceptions or die */
if (regs->tstate & TSTATE_PRIV)
/* Kernel mode? Handle exceptions or die */
if (regs->tstate & TSTATE_PRIV)
@@
-480,6
+498,5
@@
do_sigbus:
fault_done:
/* These values are no longer needed, clear them. */
set_thread_fault_code(0);
fault_done:
/* These values are no longer needed, clear them. */
set_thread_fault_code(0);
- clear_thread_flag(TIF_BLKCOMMIT);
current_thread_info()->fault_address = 0;
}
current_thread_info()->fault_address = 0;
}