Re: [PATCH -tip v5 06/10] kprobes/x86: Cleanup save/restore registers

Frank Ch. Eigler
2009-11-24T15:41:08Z

Frederic Weisbecker <fweisbec@gmail.com> writes:

> [...]
>> +#define SAVE_REGS_STRING \
>> +#define RESTORE_REGS_STRING \
>
> BTW, do you really need to push/pop every registers
> before/after calling a probe handler?

It's part of the definition of a kprobe, that a populated
pt_regs* value is passed. Clients can rely on that in order
to access registers etc.

- FChE