On Wed, May 25, 2016 at 10:56 AM, Josh Poimboeuf wrote:
>
> I used to have a STACKTOOL_IGNORE_INSN macro that would tell the tool to
> skip warnings for specific instructions in inline asm:
>
> Here's an example of it how it was used:
Ok, looking at that, I'm starting to suspect that it is
On Wed, May 25, 2016 at 10:14:24AM -0700, Linus Torvalds wrote:
> Josh,
> my current git version (with gcc 5.3.1) makes objtool warn about
> "duplicate frame pointer save" in drivers/gpu/drm/vmwgfx/vmwgfx_msg.c
> for both vmw_send_msg() and vmw_host_get_guestinfo().
>
> The reason is that
Josh,
my current git version (with gcc 5.3.1) makes objtool warn about
"duplicate frame pointer save" in drivers/gpu/drm/vmwgfx/vmwgfx_msg.c
for both vmw_send_msg() and vmw_host_get_guestinfo().
The reason is that VMW_PORT_HB_OUT() uses a magic instruction sequence
(a "rep outsb") to communicate
