Messages in this thread | | | From | David Laight <> | Subject | RE: [PATCH v5 00/18] Rework READ_ONCE() to improve codegen | Date | Fri, 15 May 2020 13:55:43 +0000 |
| |
From: Peter Zijlstra > Sent: 14 May 2020 15:25 .. > Exact same requirements, KASAN even has the data_race() problem through > READ_ONCE_NOCHECK(), UBSAN doesn't and might be simpler because of it.
What happens if you implement READ_ONCE_NOCHECK() with an asm() statement containing a memory load?
Is that enough to kill all the instrumentation?
David
- Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK Registration No: 1397386 (Wales)
| |