From: Peter Zijlstra <peterz@infradead.org>
To: Yi Sun <yi.y.sun@linux.intel.com>
Cc: Waiman Long <longman@redhat.com>, Juergen Gross <jgross@suse.com>,
linux-kernel@vger.kernel.org, x86@kernel.org, tglx@linutronix.de,
chao.p.peng@intel.com, chao.gao@intel.com,
isaku.yamahata@intel.com, michael.h.kelley@microsoft.com,
tianyu.lan@microsoft.com, "K. Y. Srinivasan" <kys@microsoft.com>,
Haiyang Zhang <haiyangz@microsoft.com>,
Stephen Hemminger <sthemmin@microsoft.com>,
"mingo@redhat.com" <mingo@redhat.com>,
Will Deacon <will.deacon@arm.com>
Subject: Re: [PATCH v1 2/2] x86/hyperv: make HvNotifyLongSpinWait hypercall
Date: Tue, 23 Oct 2018 10:51:27 +0200 [thread overview]
Message-ID: <20181023085127.GG3109@worktop.c.hoisthospitality.com> (raw)
In-Reply-To: <20181023025740.GL11769@yi.y.sun>
On Tue, Oct 23, 2018 at 10:57:40AM +0800, Yi Sun wrote:
> On 18-10-22 19:15:16, Peter Zijlstra wrote:
> > > >>>> +#if defined(CONFIG_X86_64) && defined(CONFIG_PARAVIRT_SPINLOCKS) && IS_ENABLED(CONFIG_HYPERV)
> > > >>>> + if (!hv_notify_long_spin_wait(SPIN_THRESHOLD - loop))
> > > >>>> + break;
> > > >>>> +#endif
> >
> > Secondly; how come you thought that was acceptable in any way shape or
> > form?
> >
> Sorry for that. Will try another way.
Can you try and explain why vcpu_is_preempted() doesn't work for you?
next prev parent reply other threads:[~2018-10-23 8:51 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-19 13:13 [PATCH v1 0/2] Enable HvNotifyLongSpinWait for Hyper-V Yi Sun
2018-10-19 13:13 ` [PATCH v1 1/2] x86/hyperv: get spinlock retry number on Hyper-V Yi Sun
2018-10-19 13:13 ` [PATCH v1 2/2] x86/hyperv: make HvNotifyLongSpinWait hypercall Yi Sun
2018-10-19 14:20 ` Juergen Gross
2018-10-22 1:53 ` Yi Sun
2018-10-22 7:32 ` Juergen Gross
2018-10-22 16:31 ` Waiman Long
2018-10-22 17:15 ` Peter Zijlstra
2018-10-22 17:27 ` Waiman Long
2018-10-22 17:31 ` Peter Zijlstra
2018-10-22 18:01 ` Waiman Long
2018-10-23 2:57 ` Yi Sun
2018-10-23 8:51 ` Peter Zijlstra [this message]
2018-10-23 9:33 ` Yi Sun
2018-10-31 1:54 ` Yi Sun
2018-10-31 14:10 ` Peter Zijlstra
2018-10-31 15:07 ` Waiman Long
2018-10-31 17:15 ` Peter Zijlstra
2018-11-01 3:20 ` Yi Sun
2018-11-01 8:59 ` Peter Zijlstra
2018-11-01 12:59 ` Waiman Long
2018-11-05 6:54 ` Yi Sun
2018-10-24 16:53 ` Michael Kelley
2018-10-25 2:23 ` Yi Sun
2018-10-31 2:06 ` Yi Sun
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