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xen-devel
[Xen-devel] Re: [PATCH 08/13] xen/pvticketlock: disable interrupts while
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To: |
Don Zickus <dzickus@xxxxxxxxxx> |
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Subject: |
[Xen-devel] Re: [PATCH 08/13] xen/pvticketlock: disable interrupts while blocking |
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From: |
Avi Kivity <avi@xxxxxxxxxx> |
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Date: |
Wed, 14 Sep 2011 10:00:07 +0300 |
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Cc: |
Jeremy Fitzhardinge <jeremy@xxxxxxxx>, Marcelo Tosatti <mtosatti@xxxxxxxxxx>, Nick Piggin <npiggin@xxxxxxxxx>, KVM <kvm@xxxxxxxxxxxxxxx>, Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>, Peter Zijlstra <peterz@xxxxxxxxxxxxx>, the arch/x86 maintainers <x86@xxxxxxxxxx>, Linux Kernel Mailing List <linux-kernel@xxxxxxxxxxxxxxx>, Andi Kleen <andi@xxxxxxxxxxxxxx>, Jeremy Fitzhardinge <jeremy.fitzhardinge@xxxxxxxxxx>, "H. Peter Anvin" <hpa@xxxxxxxxx>, Ingo Molnar <mingo@xxxxxxx>, Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>, Xen Devel <xen-devel@xxxxxxxxxxxxxxxxxxx> |
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Wed, 14 Sep 2011 00:04:50 -0700 |
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<20110906182758.GR5795@xxxxxxxxxx> <4E66EF86.9070200@xxxxxxxxxx> <20110907134411.GV5795@xxxxxxxxxx> <4E678992.5050709@xxxxxxxxxx> <20110907155657.GX5795@xxxxxxxxxx> <4E679AF4.50209@xxxxxxxxxx> <20110907165203.GQ6838@xxxxxxxxxx> <4E67A551.4000502@xxxxxxxxxx> <20110913184044.GN5795@xxxxxxxxxx> <20110913190320.GR7761@xxxxxxxxxxxxxxxxxx> <20110913192152.GO5795@xxxxxxxxxx> |
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On 09/13/2011 10:21 PM, Don Zickus wrote:
Or are you saying an NMI in an idle system will have the same %rip thus
falsely detecting a back-to-back NMI?
That's easy to avoid - insert an instruction zeroing the last nmi_rip
somewhere before or after hlt. It's always okay to execute such an
instruction (outside the nmi handler itself), since nmi_rip is meant to
detect a "no instructions executed" condition.
--
I have a truly marvellous patch that fixes the bug which this
signature is too narrow to contain.
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- [Xen-devel] Re: [PATCH 08/13] xen/pvticketlock: disable interrupts while blocking, (continued)
- [Xen-devel] Re: [PATCH 08/13] xen/pvticketlock: disable interrupts while blocking, Don Zickus
- [Xen-devel] Re: [PATCH 08/13] xen/pvticketlock: disable interrupts while blocking, Andi Kleen
- [Xen-devel] Re: [PATCH 08/13] xen/pvticketlock: disable interrupts while blocking, Don Zickus
- [Xen-devel] Re: [PATCH 08/13] xen/pvticketlock: disable interrupts while blocking, Don Zickus
- [Xen-devel] Re: [PATCH 08/13] xen/pvticketlock: disable interrupts while blocking, Andi Kleen
- [Xen-devel] Re: [PATCH 08/13] xen/pvticketlock: disable interrupts while blocking, Don Zickus
- [Xen-devel] Re: [PATCH 08/13] xen/pvticketlock: disable interrupts while blocking, Andi Kleen
- [Xen-devel] Re: [PATCH 08/13] xen/pvticketlock: disable interrupts while blocking,
Avi Kivity <=
- [Xen-devel] Re: [PATCH 08/13] xen/pvticketlock: disable interrupts while blocking, Don Zickus
- [Xen-devel] Re: [PATCH 08/13] xen/pvticketlock: disable interrupts while blocking, Andi Kleen
- [Xen-devel] Re: [PATCH 08/13] xen/pvticketlock: disable interrupts while blocking, Avi Kivity
- [Xen-devel] Re: [PATCH 08/13] xen/pvticketlock: disable interrupts while blocking, Andi Kleen
- [Xen-devel] Re: [PATCH 08/13] xen/pvticketlock: disable interrupts while blocking, Avi Kivity
- [Xen-devel] Re: [PATCH 08/13] xen/pvticketlock: disable interrupts while blocking, Andi Kleen
- [Xen-devel] Re: [PATCH 08/13] xen/pvticketlock: disable interrupts while blocking, Avi Kivity
[Xen-devel] [PATCH 13/13] x86/pvticketlock: use __ticket_t for pvop args, Jeremy Fitzhardinge
[Xen-devel] [PATCH 07/13] x86/ticketlocks: tidy up __ticket_unlock_kick(), Jeremy Fitzhardinge
[Xen-devel] [PATCH 06/13] x86/ticketlock: add slowpath logic, Jeremy Fitzhardinge
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