We can't emulate stwu since that may corrupt current exception stack.
So we will have to do real store operation in the exception return code.
Firstly we'll allocate a trampoline exception frame below the kprobed
function stack and copy the current exception frame to the trampoline.
Then we can do
On Mon, 2011-12-12 at 16:50 +0800, Tiejun Chen wrote:
> We can't emulate stwu since that may corrupt current exception stack.
> So we will have to do real store operation in the exception return code.
>
> Firstly we'll allocate a trampoline exception frame below the kprobed
> function stack and co
Benjamin Herrenschmidt wrote:
> On Mon, 2011-12-12 at 16:50 +0800, Tiejun Chen wrote:
>> We can't emulate stwu since that may corrupt current exception stack.
>> So we will have to do real store operation in the exception return code.
>>
>> Firstly we'll allocate a trampoline exception frame below
>>
>> You need to hook into "resume_kernel" instead.
>
> Maybe I'm misunderstanding what you mean since as I recall you suggestion we
> should do this at the end of do_work.
>
I regenerate this with hooking into resume_kernel in below.
>> Also, we may want to simplify the whole thing, instead of
Sorry please ignore this email since I'm missing something here :(
Tiejun
tiejun.chen wrote:
>>> You need to hook into "resume_kernel" instead.
>> Maybe I'm misunderstanding what you mean since as I recall you suggestion we
>> should do this at the end of do_work.
>>
>
> I regenerate this with h
>> You need to hook into "resume_kernel" instead.
>
I regenerate this with hooking into resume_kernel in below.
> Maybe I'm misunderstanding what you mean since as I recall you suggestion we
> should do this at the end of do_work.
>
>> Also, we may want to simplify the whole thing, instead of ch
On Tue, 2011-12-13 at 18:36 +0800, tiejun.chen wrote:
> >> You need to hook into "resume_kernel" instead.
> >
>
> I regenerate this with hooking into resume_kernel in below.
.../...
> I assume it may not necessary to reorganize ret_from_except for *ppc32* .
It might be cleaner but I can do tha
Looks we have to go into 'restore' at last as I said previously. I send v2 based
on your all comments.
>> I assume it may not necessary to reorganize ret_from_except for *ppc32* .
>
> It might be cleaner but I can do that myself later.
>
I have this version but I'm not 100% sure if its as you e
