powerpc/kernel: Print actual address of regs when oopsing

When we oops or otherwise call show_regs() we print the address of the
regs structure. Being able to see the address is fairly useful,
firstly to verify that the regs pointer is not completely bogus, and
secondly it allows you to dump the regs and surrounding memory with a
debugger if you have one.

In the normal case the regs will be located somewhere on the stack, so
printing their location discloses no further information than printing
the stack pointer does already.

So switch to %px and print the actual address, not the hashed value.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

diff --git a/arch/powerpc/kernel/process.c b/arch/powerpc/kernel/process.c
index 5acb5a176dbe5c8bffe6ddb7458b7d3ac2b7019f..72be0c32e902a35fa45e5ed02036df91999dda58 100644 (file)
--- a/arch/powerpc/kernel/process.c
+++ b/arch/powerpc/kernel/process.c
@@ -1403,7 +1403,7 @@ void show_regs(struct pt_regs * regs)
 
        printk("NIP:  "REG" LR: "REG" CTR: "REG"\n",
               regs->nip, regs->link, regs->ctr);
-       printk("REGS: %p TRAP: %04lx   %s  (%s)\n",
+       printk("REGS: %px TRAP: %04lx   %s  (%s)\n",
               regs, regs->trap, print_tainted(), init_utsname()->release);
        printk("MSR:  "REG" ", regs->msr);
        print_msr_bits(regs->msr);