On Thu, 2018-01-11 at 17:36 +, Andrew Cooper wrote:
> It is generally worth doing a read to conditionally avoid a locked
> RMW,
> in the case that you expect the locked RMW to be unnecessary (i.e.
> the
> modification is already present).
>
> The same is not true for plain memory reads and wri
On 11/01/18 17:26, Dario Faggioli wrote:
> On Thu, 2018-01-11 at 16:50 +, George Dunlap wrote:
>> On 01/11/2018 04:48 PM, Andrew Cooper wrote:
>>> Signed-off-by: Andrew Cooper
>>> ---
>>> CC: George Dunlap
>>> CC: Dario Faggioli
>>>
>>> Notices by chance while inspecting the disassembly delt
On 01/11/2018 05:36 PM, Andrew Cooper wrote:
> On 11/01/18 17:26, Dario Faggioli wrote:
>> On Thu, 2018-01-11 at 16:50 +, George Dunlap wrote:
>>> On 01/11/2018 04:48 PM, Andrew Cooper wrote:
Signed-off-by: Andrew Cooper
---
CC: George Dunlap
CC: Dario Faggioli
On Thu, 2018-01-11 at 16:50 +, George Dunlap wrote:
> On 01/11/2018 04:48 PM, Andrew Cooper wrote:
> > Signed-off-by: Andrew Cooper
> > ---
> > CC: George Dunlap
> > CC: Dario Faggioli
> >
> > Notices by chance while inspecting the disassembly delta for
> > "x86/bitops:
> > Introduce variab
On 01/11/2018 04:48 PM, Andrew Cooper wrote:
> Signed-off-by: Andrew Cooper
> ---
> CC: George Dunlap
> CC: Dario Faggioli
>
> Notices by chance while inspecting the disassembly delta for "x86/bitops:
> Introduce variable/constant pairs for __{set,clear,change}_bit()"
> ---
> xen/common/sched_
