Re: [Xen-devel] [PATCH] use consistent values when consuming runtime-changeable parameters

["Jan Beulich" <JBeulich@xxxxxxxx>]

>>> On 30.10.18 at 17:23, <wei.liu2@xxxxxxxxxx> wrote:
> On Tue, Oct 30, 2018 at 08:44:20AM -0600, Jan Beulich wrote:
>> There's no guarantee that e.g. a switch() control expression's memory
>> operand(s) get(s) read just once. Guard against the compiler producing
>> "unexpected" code by sprinkling around some ACCESS_ONCE().
>> 
>> I'm leaving alone opt_conswitch[]: It gets accessed in quite a few
>> places anyway, and an intermediate change won't have any severe effect
>> afaict.
>> 
>> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
> 
> I'm curious how you came up with the list of parameters that need
> fixing.

I've just gone through all that are currently run-time changable.

Jan



_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxxx
https://lists.xenproject.org/mailman/listinfo/xen-devel