* Ingo Molnar wrote:
>
> * Andy Lutomirski wrote:
>
> > I'm on my way to LPC, so I can't easily work on this right this instant.
> >
> > Can you try this branch, though?
> >
> > https://git.kernel.org/pub/scm/linux/kernel/git/luto/linux.git/commit/?h=x86/fixes&id=cb88ae619b4c3d832d224f2c64
* Andy Lutomirski wrote:
> I'm on my way to LPC, so I can't easily work on this right this instant.
>
> Can you try this branch, though?
>
> https://git.kernel.org/pub/scm/linux/kernel/git/luto/linux.git/commit/?h=x86/fixes&id=cb88ae619b4c3d832d224f2c641849dc02aed864
Any objections against m
>
>
> Hi Andy,
>
> I have booted Linus's tree (8fac2f96ab86b0e14ec4e42851e21e9b518bdc55) on
> Skylake server and noticed that it reboots automatically.
>
> When I booted the same kernel with command line arg "nopcid" it works
> fine. Please find below a snippet of dmesg. Please let me know if y
> From: Andy Lutomirski
> Date: Thu, Jun 29, 2017 at 8:53 AM
> Subject: [PATCH v4 00/10] PCID and improved laziness
> To: x...@kernel.org
> Cc: linux-kernel@vger.kernel.org, Borislav Petkov ,
> Linus Torvalds , Andrew Morton
> , Mel Gorman ,
> "linux...@kvack.org&q
On Mon, Jul 17, 2017 at 05:06:25PM +0200, Ingo Molnar wrote:
> > > I'll push it all out when it passes testing.
> > >
> > > If it's all super stable I plan to tempt Linus with a late merge window
> > > pull
> > > request for all these preparatory patches. (Unless he objects that is.
> > > Hint,
* Mel Gorman wrote:
> On Wed, Jul 05, 2017 at 10:56:57AM +0200, Ingo Molnar wrote:
> >
> > * Andy Lutomirski wrote:
> >
> > > *** Ingo, even if this misses 4.13, please apply the first patch before
> > > *** the merge window.
> >
> > > Andy Lutomirski (10):
> > > x86/mm: Don't reenter flus
On Wed, Jul 05, 2017 at 10:56:57AM +0200, Ingo Molnar wrote:
>
> * Andy Lutomirski wrote:
>
> > *** Ingo, even if this misses 4.13, please apply the first patch before
> > *** the merge window.
>
> > Andy Lutomirski (10):
> > x86/mm: Don't reenter flush_tlb_func_common()
> > x86/mm: Delete
On Tue, 11 Jul, at 08:00:47AM, Andy Lutomirski wrote:
>
> https://git.kernel.org/pub/scm/linux/kernel/git/luto/misc-tests.git/
>
> I did:
>
> $ ./context_switch_latency_64 0 process same
Ah, that's better. I see about a 3.3% speedup with your patches when
running the context-switch benchmark.
On Tue, Jul 11, 2017 at 4:32 AM, Matt Fleming wrote:
> On Fri, 30 Jun, at 01:44:22PM, Matt Fleming wrote:
>> On Thu, 29 Jun, at 08:53:12AM, Andy Lutomirski wrote:
>> > *** Ingo, even if this misses 4.13, please apply the first patch before
>> > *** the merge window.
>> >
>> > There are three perfo
On Fri, 30 Jun, at 01:44:22PM, Matt Fleming wrote:
> On Thu, 29 Jun, at 08:53:12AM, Andy Lutomirski wrote:
> > *** Ingo, even if this misses 4.13, please apply the first patch before
> > *** the merge window.
> >
> > There are three performance benefits here:
> >
> > 1. TLB flushing is slow. (I.
On Wed, Jul 5, 2017 at 1:56 AM, Ingo Molnar wrote:
>
> If it's all super stable I plan to tempt Linus with a late merge window pull
> request for all these preparatory patches. (Unless he objects that is. Hint,
> hint.)
I don't think I'll object. At some point the best testing is "lots of users"
* Andy Lutomirski wrote:
> *** Ingo, even if this misses 4.13, please apply the first patch before
> *** the merge window.
> Andy Lutomirski (10):
> x86/mm: Don't reenter flush_tlb_func_common()
> x86/mm: Delete a big outdated comment about TLB flushing
> x86/mm: Give each mm TLB flush ge
On Thu, 29 Jun, at 08:53:12AM, Andy Lutomirski wrote:
> *** Ingo, even if this misses 4.13, please apply the first patch before
> *** the merge window.
>
> There are three performance benefits here:
>
> 1. TLB flushing is slow. (I.e. the flush itself takes a while.)
>This avoids many of them
*** Ingo, even if this misses 4.13, please apply the first patch before
*** the merge window.
There are three performance benefits here:
1. TLB flushing is slow. (I.e. the flush itself takes a while.)
This avoids many of them when switching tasks by using PCID. In
a stupid little benchmar
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