On Wed, Jan 31, 2024 at 04:59:29PM +0100, Alexandre Ghiti wrote:
> The preventive sfence.vma were emitted because new mappings must be made
> visible to the page table walker but Svvptc guarantees that xRET act as
> a fence, so no need to sfence.vma for the uarchs that implement this
> extension.
> >> > > + * Order the stores above in vsnprintf() vs the store
> >> > > of the
> >> > > + * space below which joins the two strings. Note this
> >> > > doesn't
> >> > > + * make the code truly race free because there is no
> >> > > barrier on
> >> > > +
On Mon, Feb 11, 2019 at 03:38:59PM +0100, Petr Mladek wrote:
> On Mon 2019-02-11 13:50:35, Andrea Parri wrote:
> > Hi Michael,
> >
> >
> > On Thu, Feb 07, 2019 at 11:46:29PM +1100, Michael Ellerman wrote:
> > > Arch code can set a "dump stack arch des
Hi Michael,
On Thu, Feb 07, 2019 at 11:46:29PM +1100, Michael Ellerman wrote:
> Arch code can set a "dump stack arch description string" which is
> displayed with oops output to describe the hardware platform.
>
> It is useful to initialise this as early as possible, so that an early
> oops will
Hi Yury,
On Sun, Mar 25, 2018 at 08:50:04PM +0300, Yury Norov wrote:
> kick_all_cpus_sync() forces all CPUs to sync caches by sending broadcast IPI.
> If CPU is in extended quiescent state (idle task or nohz_full userspace), this
> work may be done at the exit of this state. Delaying synchronizati
On Fri, Oct 06, 2017 at 10:32:19AM +0200, Peter Zijlstra wrote:
> > AFAIU the scheduler rq->lock is held while preemption is disabled.
> > synchronize_sched() is used here to ensure that all pre-existing
> > preempt-off critical sections have completed.
> >
> > So saying that we use synchronize_sc
On Fri, Oct 6, 2017 at 12:02 AM, Andrea Parri wrote:
> On Thu, Oct 05, 2017 at 04:02:06PM +, Mathieu Desnoyers wrote:
>> - On Oct 5, 2017, at 8:12 AM, Peter Zijlstra pet...@infradead.org wrote:
>>
>> > On Wed, Oct 04, 2017 at 02:37:53PM -0700, Paul E. McKenney w
On Thu, Oct 05, 2017 at 04:02:06PM +, Mathieu Desnoyers wrote:
> - On Oct 5, 2017, at 8:12 AM, Peter Zijlstra pet...@infradead.org wrote:
>
> > On Wed, Oct 04, 2017 at 02:37:53PM -0700, Paul E. McKenney wrote:
> >> diff --git a/arch/powerpc/kernel/membarrier.c
> >> b/arch/powerpc/kernel/m
