On Thu, 22 Jul 2021 22:54:48 +0100, Andy Shevchenko <andy.shevchenko@xxxxxxxxx> wrote: > > [1 <text/plain; UTF-8 (7bit)>] > On Friday, July 23, 2021, Bjorn Helgaas <helgaas@xxxxxxxxxx> wrote: > > > On Wed, Jul 21, 2021 at 09:11:30PM +0200, Thomas Gleixner wrote: > > > Nothing enforces the posted writes to be visible when the function > > > returns. Flush them even if the flush might be redundant when the entry > > is > > > masked already as the unmask will flush as well. This is either setup or > > a > > > rare affinity change event so the extra flush is not the end of the > > world. > > > > > > While this is more a theoretical issue especially the X86 MSI affinity > > > stter mechanism relies on the assumption that the update has reached the > > > > stter? > > > Setter I suppose My bet is on 'steer', given that this is about affinity management. M. -- Without deviation from the norm, progress is not possible.
