From: Gleb Natapov <gleb@redhat.com>
To: Peter Zijlstra <peterz@infradead.org>
Cc: jeremy@goop.org, x86@kernel.org, kvm@vger.kernel.org,
linux-doc@vger.kernel.org, drjones@redhat.com,
virtualization@lists.linux-foundation.org, andi@firstfloor.org,
hpa@zytor.com, stefano.stabellini@eu.citrix.com,
xen-devel@lists.xensource.com,
Raghavendra K T <raghavendra.kt@linux.vnet.ibm.com>,
mingo@redhat.com, habanero@linux.vnet.ibm.com, riel@redhat.com,
konrad.wilk@oracle.com, ouyang@cs.pitt.edu, avi.kivity@gmail.com,
tglx@linutronix.de, chegu_vinod@hp.com, gregkh@suse.de,
linux-kernel@vger.kernel.org, srivatsa.vaddagiri@gmail.com,
attilio.rao@citrix.com, pbonzini@redhat.com,
torvalds@linux-foundation.org, stephan.diestelhorst@amd.com
Subject: Re: [PATCH RFC V10 15/18] kvm : Paravirtual ticketlocks support for linux guests running on KVM hypervisor
Date: Tue, 16 Jul 2013 19:31:04 +0300 [thread overview]
Message-ID: <20130716163104.GD8981@redhat.com> (raw)
In-Reply-To: <20130716154852.GN23818@dyad.programming.kicks-ass.net>
On Tue, Jul 16, 2013 at 05:48:52PM +0200, Peter Zijlstra wrote:
> On Tue, Jul 16, 2013 at 09:02:15AM +0300, Gleb Natapov wrote:
> > BTW can NMI handler take spinlocks?
>
> No -- that is, yes you can using trylock, but you still shouldn't.
>
Great news for this code. Thanks.
--
Gleb.
next prev parent reply other threads:[~2013-07-16 16:31 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-06-24 12:40 [PATCH RFC V10 0/18] Paravirtualized ticket spinlocks Raghavendra K T
2013-06-24 12:40 ` [PATCH RFC V10 1/18] x86/spinlock: Replace pv spinlocks with pv ticketlocks Raghavendra K T
2013-06-24 12:40 ` [PATCH RFC V10 2/18] x86/ticketlock: Don't inline _spin_unlock when using paravirt spinlocks Raghavendra K T
2013-06-24 12:41 ` [PATCH RFC V10 3/18] x86/ticketlock: Collapse a layer of functions Raghavendra K T
2013-06-24 12:41 ` [PATCH RFC V10 4/18] xen: Defer spinlock setup until boot CPU setup Raghavendra K T
2013-06-24 12:41 ` [PATCH RFC V10 5/18] xen/pvticketlock: Xen implementation for PV ticket locks Raghavendra K T
2013-06-24 12:41 ` [PATCH RFC V10 6/18] xen/pvticketlocks: Add xen_nopvspin parameter to disable xen pv ticketlocks Raghavendra K T
2013-06-24 12:42 ` [PATCH RFC V10 7/18] x86/pvticketlock: Use callee-save for lock_spinning Raghavendra K T
2013-06-24 12:42 ` [PATCH RFC V10 8/18] x86/pvticketlock: When paravirtualizing ticket locks, increment by 2 Raghavendra K T
2013-06-24 12:42 ` [PATCH RFC V10 9/18] jump_label: Split out rate limiting from jump_label.h Raghavendra K T
2013-06-24 12:42 ` [PATCH RFC V10 10/18] x86/ticketlock: Add slowpath logic Raghavendra K T
2013-06-24 12:42 ` [PATCH RFC V10 11/18] xen/pvticketlock: Allow interrupts to be enabled while blocking Raghavendra K T
2013-06-24 12:43 ` [PATCH RFC V10 12/18] kvm hypervisor : Add a hypercall to KVM hypervisor to support pv-ticketlocks Raghavendra K T
2013-07-14 13:48 ` Gleb Natapov
2013-07-15 5:53 ` Raghavendra K T
2013-06-24 12:43 ` [PATCH RFC V10 13/18] kvm : Fold pv_unhalt flag into GET_MP_STATE ioctl to aid migration Raghavendra K T
2013-06-24 12:43 ` [PATCH RFC V10 14/18] kvm guest : Add configuration support to enable debug information for KVM Guests Raghavendra K T
2013-06-24 12:43 ` [PATCH RFC V10 15/18] kvm : Paravirtual ticketlocks support for linux guests running on KVM hypervisor Raghavendra K T
2013-07-14 13:12 ` Gleb Natapov
2013-07-15 9:50 ` Raghavendra K T
2013-07-15 10:36 ` Gleb Natapov
2013-07-16 3:37 ` Raghavendra K T
2013-07-16 6:02 ` Gleb Natapov
2013-07-16 15:48 ` Peter Zijlstra
2013-07-16 16:31 ` Gleb Natapov [this message]
2013-07-16 18:49 ` Raghavendra K T
2013-07-16 18:42 ` Raghavendra K T
2013-07-17 9:34 ` Gleb Natapov
2013-07-17 10:05 ` Raghavendra K T
2013-07-17 10:38 ` Raghavendra K T
2013-07-17 12:45 ` Gleb Natapov
2013-07-17 12:55 ` Raghavendra K T
2013-07-17 13:25 ` Gleb Natapov
2013-07-17 14:13 ` Raghavendra K T
2013-07-17 14:14 ` Raghavendra K T
2013-07-17 14:44 ` Gleb Natapov
2013-07-17 14:55 ` Raghavendra K T
2013-07-17 15:11 ` Gleb Natapov
2013-07-17 15:22 ` Raghavendra K T
2013-07-17 15:20 ` Raghavendra K T
2013-06-24 12:43 ` [PATCH RFC V10 16/18] kvm hypervisor : Simplify kvm_for_each_vcpu with kvm_irq_delivery_to_apic Raghavendra K T
2013-07-14 13:24 ` Gleb Natapov
2013-07-15 15:36 ` Raghavendra K T
2013-07-15 15:46 ` Gleb Natapov
2013-07-16 18:19 ` Raghavendra K T
2013-06-24 12:44 ` [PATCH RFC V10 17/18] Documentation/kvm : Add documentation on Hypercalls and features used for PV spinlock Raghavendra K T
2013-06-24 12:44 ` [PATCH RFC V10 18/18] kvm hypervisor: Add directed yield in vcpu block path Raghavendra K T
2013-07-14 14:18 ` Gleb Natapov
2013-07-15 6:04 ` Raghavendra K T
2013-06-24 13:17 ` [PATCH RFC V10 0/18] Paravirtualized ticket spinlocks Andrew Jones
2013-06-24 13:49 ` Raghavendra K T
2013-06-26 8:33 ` Raghavendra K T
2013-06-27 11:47 ` Raghavendra K T
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