[lkml]   [2006]   [Jun]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: [PATCH] kprobes for s390 architecture
On Wed, Jun 21, 2006 at 06:38:40PM +0200, Martin Schwidefsky wrote:
> You misunderstood me here. I'm not talking about storing the same piece
> of data to memory on each processor. I'm talking about isolating all
> other cpus so that the initiating cpu can store the breakpoint to memory
> without running into the danger that another cpu is trying to execute it
> at the same time. But probably the store should be atomic in regard to
> instruction fetching on the other cpus. It is only two bytes and it
> should be aligned.

So maybe something like this:

void smp_replace_instruction(void *info) {
struct ins_replace_args *parms;
parms = (struct ins_replace_args *) info;
*parms->addr = *parms->insn

void __kprobes arch_arm_kprobe(struct kprobe *p)
struct ins_replace_args parms;
parms.addr = p->addr;

smp_call_function(smp_replace_instruction, &parms, 0, 1);

To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
More majordomo info at
Please read the FAQ at

 \ /
  Last update: 2006-06-21 19:37    [W:0.116 / U:0.520 seconds]
©2003-2017 Jasper Spaans. hosted at Digital OceanAdvertise on this site