On Fri, Mar 19, 2021 at 12:21:03PM +0100, Peter Zijlstra wrote:
> Let me see if I can come up with something better.
Duh, we can put the instructions on a list and process them later, just
like static_call, can even use the same insn list_head since a retpoline
cannot be a static call.
Lemme go
On Thu, Mar 18, 2021 at 09:54:40PM -0500, Josh Poimboeuf wrote:
> On Thu, Mar 18, 2021 at 06:11:15PM +0100, Peter Zijlstra wrote:
> > @@ -1212,6 +1225,8 @@ static int handle_group_alt(struct objto
> > dest_off = arch_jump_destination(insn);
> > if (dest_off ==
On Thu, Mar 18, 2021 at 06:11:15PM +0100, Peter Zijlstra wrote:
> @@ -1212,6 +1225,8 @@ static int handle_group_alt(struct objto
> dest_off = arch_jump_destination(insn);
> if (dest_off == special_alt->new_off + special_alt->new_len)
>
When retpolines are employed, compilers typically emit calls to
retpoline thunks. Objtool recognises these calls and marks them as
dynamic calls.
Provide infrastructure for architectures to rewrite/augment what the
compiler wrote for us.
Signed-off-by: Peter Zijlstra (Intel)
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