On 07/10/2019 10:17, Peter Zijlstra wrote:
> In preparation for static_call and variable size jump_label support,
> teach text_poke_bp() to emulate instructions, namely:
>
> JMP32, JMP8, CALL, NOP2, NOP_ATOMIC5, INT3
>
> The current text_poke_bp() takes a @handler argument which is used as
> a
On Tue, Oct 08, 2019 at 11:04:12AM -0400, Steven Rostedt wrote:
> The difference between do_sync and i is that i gets incremented at
> every iteration, where do_sync gets incremented only when the first
> conditional is false. But I still see do_sync as a loop variable.
I'd prefer it this way:
On Tue, 8 Oct 2019 16:54:24 +0200
Borislav Petkov wrote:
> On Tue, Oct 08, 2019 at 04:48:34PM +0200, Peter Zijlstra wrote:
> > Can, but why? That's more lines for no raisin ;-)
>
> Here's a raisin: I was looking at this and then all of a sudden went:
> "W00t, why is this do_sync part of the
On Tue, Oct 08, 2019 at 04:48:34PM +0200, Peter Zijlstra wrote:
> Can, but why? That's more lines for no raisin ;-)
Here's a raisin: I was looking at this and then all of a sudden went:
"W00t, why is this do_sync part of the loop at all? Do they belong
together? Nope."
If we're going to save on
On Tue, Oct 08, 2019 at 10:40:10AM -0400, Steven Rostedt wrote:
> Seeing OPCODE_JMP32 and INSN_SIZE_JMP32 doesn't look like they are
> related to me.
But if it starts with OPCODE_ you know what it is - an opcode.
JMP32_INSN_OPCODE can first be shortened to JMP32_OPCODE and then having
instruction
On Tue, Oct 08, 2019 at 04:29:24PM +0200, Borislav Petkov wrote:
> On Mon, Oct 07, 2019 at 10:17:17AM +0200, Peter Zijlstra wrote:
> > @@ -63,8 +66,17 @@ static inline void int3_emulate_jmp(stru
> > regs->ip = ip;
> > }
> >
> > -#define INT3_INSN_SIZE 1
> > -#define CALL_INSN_SIZE 5
> >
On Tue, 8 Oct 2019 16:29:24 +0200
Borislav Petkov wrote:
> On Mon, Oct 07, 2019 at 10:17:17AM +0200, Peter Zijlstra wrote:
> > In preparation for static_call and variable size jump_label support,
> > teach text_poke_bp() to emulate instructions, namely:
> >
> > JMP32, JMP8, CALL, NOP2,
On Mon, Oct 07, 2019 at 10:17:17AM +0200, Peter Zijlstra wrote:
> In preparation for static_call and variable size jump_label support,
> teach text_poke_bp() to emulate instructions, namely:
>
> JMP32, JMP8, CALL, NOP2, NOP_ATOMIC5, INT3
>
> The current text_poke_bp() takes a @handler argument
In preparation for static_call and variable size jump_label support,
teach text_poke_bp() to emulate instructions, namely:
JMP32, JMP8, CALL, NOP2, NOP_ATOMIC5, INT3
The current text_poke_bp() takes a @handler argument which is used as
a jump target when the temporary INT3 is hit by a
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