diff options
| author | Josh Poimboeuf <[email protected]> | 2017-09-18 21:43:37 -0500 |
|---|---|---|
| committer | Ingo Molnar <[email protected]> | 2017-09-28 09:39:04 +0200 |
| commit | 2704fbb672d0d9a19414907fda7949283dcef6a1 (patch) | |
| tree | ace300ec47e25c9884e8c8d2391c3a20cc43b3a2 /drivers/fpga | |
| parent | abbe1cac6214d81d2f4e149aba64a8760703144e (diff) | |
x86/head: Add unwind hint annotations
Jiri Slaby reported an ORC issue when unwinding from an idle task. The
stack was:
ffffffff811083c2 do_idle+0x142/0x1e0
ffffffff8110861d cpu_startup_entry+0x5d/0x60
ffffffff82715f58 start_kernel+0x3ff/0x407
ffffffff827153e8 x86_64_start_kernel+0x14e/0x15d
ffffffff810001bf secondary_startup_64+0x9f/0xa0
The ORC unwinder errored out at secondary_startup_64 because the head
code isn't annotated yet so there wasn't a corresponding ORC entry.
Fix that and any other head-related unwinding issues by adding unwind
hints to the head code.
Reported-by: Jiri Slaby <[email protected]>
Tested-by: Jiri Slaby <[email protected]>
Signed-off-by: Josh Poimboeuf <[email protected]>
Cc: Andy Lutomirski <[email protected]>
Cc: Boris Ostrovsky <[email protected]>
Cc: Juergen Gross <[email protected]>
Cc: Linus Torvalds <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Cc: Thomas Gleixner <[email protected]>
Link: http://lkml.kernel.org/r/78ef000a2f68f545d6eef44ee912edceaad82ccf.1505764066.git.jpoimboe@redhat.com
Signed-off-by: Ingo Molnar <[email protected]>
Diffstat (limited to 'drivers/fpga')
0 files changed, 0 insertions, 0 deletions