Re: [PATCH] 3/4 combine RCU with seqlock to allow mmu notifier methods to sleep (#v9 was 1/4) | KernelTrap

Re: [PATCH] 3/4 combine RCU with seqlock to allow mmu notifier methods to sleep (#v9 was 1/4)

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From: Christoph Lameter

Subject: Re: [PATCH] 3/4 combine RCU with seqlock to allow mmu notifier methods to sleep (#v9 was 1/4)

Date: Friday, March 7, 2008 - 1:15 pm

On Fri, 7 Mar 2008, Andrea Arcangeli wrote:

quoted text> This is a replacement for the previously posted 3/4, one of the pieces
> to allow the mmu notifier methods to sleep.

Looks good. That is what we talked about last week. What guarantees now 
that we see the cacheline referenced after the cacheline that 
contains the pointer that was changed? hlist_for_reach does a 
rcu_dereference with implied memory barrier? So its like EMM?
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Messages in current thread:

[patch] my mmu notifiers, Nick Piggin, (Tue Feb 19, 1:43 am)

[patch] my mmu notifier sample driver, Nick Piggin, (Tue Feb 19, 1:44 am)

Re: [patch] my mmu notifiers, Robin Holt, (Tue Feb 19, 4:59 am)

Re: [patch] my mmu notifiers, Andrea Arcangeli, (Tue Feb 19, 6:58 am)

Re: [patch] my mmu notifiers, Jack Steiner, (Tue Feb 19, 7:27 am)

Re: [patch] my mmu notifiers, Nick Piggin, (Tue Feb 19, 3:59 pm)

Re: [patch] my mmu notifiers, Nick Piggin, (Tue Feb 19, 4:04 pm)

Re: [patch] my mmu notifiers, Nick Piggin, (Tue Feb 19, 4:11 pm)

Re: [patch] my mmu notifiers, Jack Steiner, (Tue Feb 19, 4:40 pm)

Re: [patch] my mmu notifiers, Andrea Arcangeli, (Tue Feb 19, 5:46 pm)

Re: [patch] my mmu notifiers, Andrea Arcangeli, (Tue Feb 19, 5:52 pm)

Re: [patch] my mmu notifiers, Andrea Arcangeli, (Tue Feb 19, 6:09 pm)

Re: [patch] my mmu notifiers, Robin Holt, (Tue Feb 19, 7:46 pm)

Re: [patch] my mmu notifiers, Robin Holt, (Tue Feb 19, 7:49 pm)

[PATCH] mmu notifiers #v6, Andrea Arcangeli, (Wed Feb 20, 3:39 am)

[PATCH] KVM swapping (+ seqlock fix) with mmu notifiers #v6, Andrea Arcangeli, (Wed Feb 20, 3:45 am)

Re: [PATCH] mmu notifiers #v6, Robin Holt, (Wed Feb 20, 4:33 am)

Re: [PATCH] mmu notifiers #v6, Andrea Arcangeli, (Wed Feb 20, 5:03 am)

Re: [PATCH] mmu notifiers #v6, Robin Holt, (Wed Feb 20, 5:24 am)

Re: [PATCH] mmu notifiers #v6, Andrea Arcangeli, (Wed Feb 20, 5:32 am)

Re: [PATCH] mmu notifiers #v6, Robin Holt, (Wed Feb 20, 6:15 am)

Re: [PATCH] mmu notifiers #v6, Robin Holt, (Wed Feb 20, 7:41 am)

Re: [PATCH] mmu notifiers #v6, Andrea Arcangeli, (Wed Feb 20, 8:34 am)

Re: [PATCH] mmu notifiers #v6, Jack Steiner, (Wed Feb 20, 2:03 pm)

Re: [patch] my mmu notifiers, Nick Piggin, (Wed Feb 20, 9:42 pm)

Re: [patch] my mmu notifiers, Nick Piggin, (Wed Feb 20, 9:47 pm)

Re: [PATCH] mmu notifiers #v6, Nick Piggin, (Wed Feb 20, 9:54 pm)

Re: [PATCH] mmu notifiers #v6, Nick Piggin, (Wed Feb 20, 10:02 pm)

Re: [PATCH] mmu notifiers #v6, Andrea Arcangeli, (Thu Feb 21, 7:40 am)

Re: [PATCH] mmu notifiers #v6, Jack Steiner, (Thu Feb 21, 9:10 am)

Re: [patch] my mmu notifiers, Jack Steiner, (Fri Feb 22, 9:31 am)

[PATCH] mmu notifiers #v7, Andrea Arcangeli, (Wed Feb 27, 12:26 pm)

Re: [PATCH] mmu notifiers #v7, Peter Zijlstra, (Wed Feb 27, 1:04 pm)

[PATCH] KVM swapping with mmu notifiers #v7, Andrea Arcangeli, (Wed Feb 27, 3:06 pm)

Re: [patch] my mmu notifiers, Christoph Lameter, (Wed Feb 27, 3:50 pm)

Re: [patch] my mmu notifiers, Christoph Lameter, (Wed Feb 27, 3:55 pm)

Re: [patch] my mmu notifiers, Christoph Lameter, (Wed Feb 27, 3:56 pm)

Re: [PATCH] mmu notifiers #v7, Christoph Lameter, (Wed Feb 27, 4:06 pm)

Re: [kvm-devel] [PATCH] mmu notifiers #v7, Andrea Arcangeli, (Wed Feb 27, 4:43 pm)

Re: [kvm-devel] [PATCH] mmu notifiers #v7, Christoph Lameter, (Wed Feb 27, 5:08 pm)

Re: [kvm-devel] [PATCH] mmu notifiers #v7, Andrea Arcangeli, (Wed Feb 27, 5:21 pm)

Re: [kvm-devel] [PATCH] mmu notifiers #v7, Christoph Lameter, (Wed Feb 27, 5:24 pm)

Re: [PATCH] KVM swapping with mmu notifiers #v7, izik eidus, (Thu Feb 28, 1:42 am)

Re: [PATCH] mmu notifiers #v7, Christoph Lameter, (Thu Feb 28, 12:48 pm)

Re: [PATCH] mmu notifiers #v7, Andrea Arcangeli, (Thu Feb 28, 2:52 pm)

Re: [PATCH] mmu notifiers #v7, Christoph Lameter, (Thu Feb 28, 3:00 pm)

Re: [PATCH] mmu notifiers #v7, Christoph Lameter, (Thu Feb 28, 4:05 pm)

Re: [PATCH] mmu notifiers #v7, Jack Steiner, (Thu Feb 28, 4:17 pm)

Re: [PATCH] mmu notifiers #v7, Andrea Arcangeli, (Thu Feb 28, 5:24 pm)

Re: [PATCH] mmu notifiers #v7, Andrea Arcangeli, (Thu Feb 28, 5:40 pm)

Re: [PATCH] mmu notifiers #v7, Andrew Morton, (Thu Feb 28, 5:56 pm)

Re: [PATCH] mmu notifiers #v7, Christoph Lameter, (Thu Feb 28, 6:03 pm)

Re: [PATCH] mmu notifiers #v7, Christoph Lameter, (Thu Feb 28, 6:13 pm)

Re: [PATCH] mmu notifiers #v7, Andrea Arcangeli, (Fri Feb 29, 6:09 am)

Re: [PATCH] mmu notifiers #v7, Christoph Lameter, (Fri Feb 29, 12:46 pm)

[PATCH] mmu notifiers #v8, Andrea Arcangeli, (Sun Mar 2, 8:54 am)

Re: [PATCH] mmu notifiers #v8 + xpmem, Andrea Arcangeli, (Sun Mar 2, 9:03 am)

Re: [PATCH] mmu notifiers #v8 + xpmem, Peter Zijlstra, (Sun Mar 2, 9:23 am)

Re: [PATCH] mmu notifiers #v8, Nick Piggin, (Sun Mar 2, 8:29 pm)

Re: [PATCH] mmu notifiers #v8, Nick Piggin, (Sun Mar 2, 8:33 pm)

Re: [PATCH] mmu notifiers #v8, Nick Piggin, (Sun Mar 2, 8:34 pm)

Re: [PATCH] mmu notifiers #v8, Nick Piggin, (Sun Mar 2, 8:39 pm)

Re: [PATCH] mmu notifiers #v8, Andrea Arcangeli, (Mon Mar 3, 5:51 am)

Re: [PATCH] mmu notifiers #v8, Nick Piggin, (Mon Mar 3, 6:10 am)

Re: [PATCH] mmu notifiers #v8, Andrea Arcangeli, (Mon Mar 3, 6:24 am)

Re: [PATCH] mmu notifiers #v8, Jack Steiner, (Mon Mar 3, 8:18 am)

Re: [PATCH] mmu notifiers #v8, Nick Piggin, (Mon Mar 3, 9:59 am)

Re: [PATCH] mmu notifiers #v8, Jack Steiner, (Mon Mar 3, 11:06 am)

Re: [PATCH] mmu notifiers #v8, Avi Kivity, (Mon Mar 3, 11:09 am)

Re: [PATCH] mmu notifiers #v8, Jack Steiner, (Mon Mar 3, 11:23 am)

Re: [PATCH] mmu notifiers #v8, Nick Piggin, (Mon Mar 3, 11:45 am)

Re: [PATCH] mmu notifiers #v8, Christoph Lameter, (Mon Mar 3, 12:01 pm)

Re: [PATCH] mmu notifiers #v8, Christoph Lameter, (Mon Mar 3, 12:02 pm)

Re: [PATCH] mmu notifiers #v8, Christoph Lameter, (Mon Mar 3, 12:03 pm)

Re: [PATCH] mmu notifiers #v8, Christoph Lameter, (Mon Mar 3, 12:04 pm)

Re: [PATCH] mmu notifiers #v8, Jack Steiner, (Mon Mar 3, 12:15 pm)

Re: [PATCH] mmu notifiers #v8, Andrea Arcangeli, (Mon Mar 3, 2:15 pm)

[PATCH] mmu notifiers #v9, Andrea Arcangeli, (Mon Mar 3, 2:37 pm)

[PATCH] KVM swapping with mmu notifiers #v9, Andrea Arcangeli, (Mon Mar 3, 3:05 pm)

Re: [PATCH] KVM swapping with mmu notifiers #v9, izik eidus, (Mon Mar 3, 5:44 pm)

[RFC] Notifier for Externally Mapped Memory (EMM), Christoph Lameter, (Tue Mar 4, 12:31 am)

[Early draft] Conversion of i_mmap_lock to semaphore, Christoph Lameter, (Tue Mar 4, 12:34 am)

Re: [PATCH] mmu notifiers #v8, Peter Zijlstra, (Tue Mar 4, 3:35 am)

Re: [PATCH] KVM swapping with mmu notifiers #v9, Andrea Arcangeli, (Tue Mar 4, 6:21 am)

Re: [RFC] Notifier for Externally Mapped Memory (EMM), Andrea Arcangeli, (Tue Mar 4, 6:30 am)

Re: [PATCH] mmu notifiers #v8, Jack Steiner, (Tue Mar 4, 7:44 am)

Re: [RFC] Notifier for Externally Mapped Memory (EMM), Christoph Lameter, (Tue Mar 4, 12:00 pm)

Re: [RFC] Notifier for Externally Mapped Memory (EMM), Andrea Arcangeli, (Tue Mar 4, 3:20 pm)

Re: [RFC] Notifier for Externally Mapped Memory (EMM), Christoph Lameter, (Tue Mar 4, 3:35 pm)

Re: [RFC] Notifier for Externally Mapped Memory (EMM), Peter Zijlstra, (Tue Mar 4, 3:42 pm)

Re: [RFC] Notifier for Externally Mapped Memory (EMM), Christoph Lameter, (Tue Mar 4, 4:14 pm)

Re: [RFC] Notifier for Externally Mapped Memory (EMM), Peter Zijlstra, (Tue Mar 4, 4:25 pm)

Re: [RFC] Notifier for Externally Mapped Memory (EMM), Peter Zijlstra, (Tue Mar 4, 4:30 pm)

Re: [PATCH] mmu notifiers #v8, Nick Piggin, (Tue Mar 4, 5:37 pm)

Re: [RFC] Notifier for Externally Mapped Memory (EMM), Avi Kivity, (Tue Mar 4, 10:09 pm)

Re: [RFC] Notifier for Externally Mapped Memory (EMM), Robin Holt, (Wed Mar 5, 2:47 am)

Re: [RFC] Notifier for Externally Mapped Memory (EMM), Avi Kivity, (Wed Mar 5, 2:53 am)

Re: [kvm-devel] [RFC] Notifier for Externally Mapped Memor ..., Dor Laor, (Wed Mar 5, 3:02 am)

Re: [PATCH] mmu notifiers #v8, Christoph Lameter, (Wed Mar 5, 11:48 am)

Re: [PATCH] mmu notifiers #v8, Nick Piggin, (Wed Mar 5, 7:59 pm)

[PATCH] 2/4 move all invalidate_page outside of PT lock (# ..., Andrea Arcangeli, (Fri Mar 7, 8:17 am)

Re: [PATCH] 3/4 combine RCU with seqlock to allow mmu noti ..., Andrea Arcangeli, (Fri Mar 7, 8:23 am)

[PATCH] 4/4 i_mmap_lock spinlock2rwsem (#v9 was 1/4), Andrea Arcangeli, (Fri Mar 7, 8:52 am)

Re: [PATCH] 3/4 combine RCU with seqlock to allow mmu noti ..., Peter Zijlstra, (Fri Mar 7, 9:52 am)

Re: [PATCH] 3/4 combine RCU with seqlock to allow mmu noti ..., Andrea Arcangeli, (Fri Mar 7, 10:50 am)

Re: [PATCH] 3/4 combine RCU with seqlock to allow mmu noti ..., Peter Zijlstra, (Fri Mar 7, 11:01 am)

Re: [PATCH] 3/4 combine RCU with seqlock to allow mmu noti ..., Andrea Arcangeli, (Fri Mar 7, 11:45 am)

Re: [PATCH] 3/4 combine RCU with seqlock to allow mmu noti ..., Andrea Arcangeli, (Fri Mar 7, 12:47 pm)

Re: [PATCH] 2/4 move all invalidate_page outside of PT loc ..., Christoph Lameter, (Fri Mar 7, 12:54 pm)

Re: [PATCH] 3/4 combine RCU with seqlock to allow mmu noti ..., Christoph Lameter, (Fri Mar 7, 1:00 pm)

Re: [PATCH] 4/4 i_mmap_lock spinlock2rwsem (#v9 was 1/4), Christoph Lameter, (Fri Mar 7, 1:03 pm)

Re: [PATCH] 3/4 combine RCU with seqlock to allow mmu noti ..., Christoph Lameter, (Fri Mar 7, 1:10 pm)

Re: [PATCH] 3/4 combine RCU with seqlock to allow mmu noti ..., Christoph Lameter, (Fri Mar 7, 1:12 pm)

Re: [PATCH] 3/4 combine RCU with seqlock to allow mmu noti ..., Christoph Lameter, (Fri Mar 7, 1:15 pm)

Re: [PATCH] 4/4 i_mmap_lock spinlock2rwsem (#v9 was 1/4), Christoph Lameter, (Wed Mar 19, 2:27 pm)

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