Re: [Qemu-devel] [PATCH 1/6] qsp: drop atomics when using the seqlock

[Paolo Bonzini]

On 03/09/2018 19:18, Emilio G. Cota wrote:
> Using atomics here is a mistake since they're not guaranteed
> to compile.

But isn't it technically a C11 data race if you don't use atomics?
Could we make nocheck read/set degrade to just a volatile access when
used on a variable that is bigger than pointers, or perhaps always
except when using tsan?

Paolo

> Signed-off-by: Emilio G. Cota <address@hidden>
> ---
>  util/qsp.c | 16 ++++++++++------
>  1 file changed, 10 insertions(+), 6 deletions(-)
>