From: Bharata B Rao <bharata@linux.vnet.ibm.com>
To: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>,
Andrea Arcangeli <aarcange@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org,
qemu-devel@nongnu.org, kvm@vger.kernel.org,
linux-api@vger.kernel.org, zhang.zhanghailiang@huawei.com,
Pavel Emelyanov <xemul@parallels.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Hugh Dickins <hughd@google.com>,
Sanidhya Kashyap <sanidhya.gatech@gmail.com>,
Dave Hansen <dave.hansen@intel.com>,
Andres Lagar-Cavilla <andreslc@google.com>,
Mel Gorman <mgorman@suse.de>, Paolo Bonzini <pbonzini@redhat.com>,
"Kirill A. Shutemov" <kirill@shutemov.name>,
"Huangpeng (Peter)" <peter.huangpeng@huawei.com>,
Andy Lutomirski <luto@amacapital.net>,
Linus Torvalds <torvalds@linux-foundation.org>,
Peter Feiner <pfeiner@google.com>,
linuxppc-dev@lists.ozlabs.org
Subject: Re: [Qemu-devel] [PATCH 19/23] userfaultfd: activate syscall
Date: Tue, 8 Sep 2015 15:30:30 +0530 [thread overview]
Message-ID: <20150908095915.GC678@in.ibm.com> (raw)
In-Reply-To: <20150908085946.GC2246@work-vm>
On Tue, Sep 08, 2015 at 09:59:47AM +0100, Dr. David Alan Gilbert wrote:
> * Bharata B Rao (bharata@linux.vnet.ibm.com) wrote:
> > In fact I had successfully done postcopy migration of sPAPR guest with
> > this setup.
>
> Interesting - I'd not got that far myself on power; I was hitting a problem
> loading htab ( htab_load() bad index 2113929216 (14848+0 entries) in htab stream (htab_shift=25) )
>
> Did you have to make any changes to the qemu code to get that happy?
I should have mentioned that I tried only QEMU driven migration within
the same host using wp3-postcopy branch of your tree. I don't see the
above issue.
(qemu) info migrate
capabilities: xbzrle: off rdma-pin-all: off auto-converge: off zero-blocks: off compress: off x-postcopy-ram: on
Migration status: completed
total time: 39432 milliseconds
downtime: 162 milliseconds
setup: 14 milliseconds
transferred ram: 1297209 kbytes
throughput: 270.72 mbps
remaining ram: 0 kbytes
total ram: 4194560 kbytes
duplicate: 734015 pages
skipped: 0 pages
normal: 318469 pages
normal bytes: 1273876 kbytes
dirty sync count: 4
I will try migration between different hosts soon and check.
Regards,
Bharata.
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next prev parent reply other threads:[~2015-09-08 10:01 UTC|newest]
Thread overview: 63+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-05-14 17:30 [PATCH 00/23] userfaultfd v4 Andrea Arcangeli
2015-05-14 17:30 ` [PATCH 01/23] userfaultfd: linux/Documentation/vm/userfaultfd.txt Andrea Arcangeli
2015-09-11 8:47 ` Michael Kerrisk (man-pages)
2015-12-04 15:50 ` Michael Kerrisk (man-pages)
2015-12-04 17:55 ` Andrea Arcangeli
2015-05-14 17:30 ` [PATCH 02/23] userfaultfd: waitqueue: add nr wake parameter to __wake_up_locked_key Andrea Arcangeli
2015-05-14 17:31 ` [PATCH 03/23] userfaultfd: uAPI Andrea Arcangeli
2015-05-14 17:31 ` [PATCH 04/23] userfaultfd: linux/userfaultfd_k.h Andrea Arcangeli
2015-05-14 17:31 ` [PATCH 05/23] userfaultfd: add vm_userfaultfd_ctx to the vm_area_struct Andrea Arcangeli
2015-05-14 17:31 ` [PATCH 06/23] userfaultfd: add VM_UFFD_MISSING and VM_UFFD_WP Andrea Arcangeli
2015-05-14 17:31 ` [PATCH 07/23] userfaultfd: call handle_userfault() for userfaultfd_missing() faults Andrea Arcangeli
2015-05-14 17:31 ` [PATCH 08/23] userfaultfd: teach vma_merge to merge across vma->vm_userfaultfd_ctx Andrea Arcangeli
2015-05-14 17:31 ` [PATCH 09/23] userfaultfd: prevent khugepaged to merge if userfaultfd is armed Andrea Arcangeli
2015-05-14 17:31 ` [PATCH 10/23] userfaultfd: add new syscall to provide memory externalization Andrea Arcangeli
2015-05-14 17:49 ` Linus Torvalds
2015-05-15 16:04 ` Andrea Arcangeli
2015-05-15 18:22 ` Linus Torvalds
2015-06-23 19:00 ` Dave Hansen
2015-06-23 21:41 ` Andrea Arcangeli
2015-05-14 17:31 ` [PATCH 11/23] userfaultfd: Rename uffd_api.bits into .features Andrea Arcangeli
2015-05-14 17:31 ` [PATCH 12/23] userfaultfd: Rename uffd_api.bits into .features fixup Andrea Arcangeli
2015-05-14 17:31 ` [PATCH 13/23] userfaultfd: change the read API to return a uffd_msg Andrea Arcangeli
2015-05-14 17:31 ` [PATCH 14/23] userfaultfd: wake pending userfaults Andrea Arcangeli
2015-10-22 12:10 ` Peter Zijlstra
2015-10-22 13:20 ` Andrea Arcangeli
2015-10-22 13:38 ` Peter Zijlstra
2015-10-22 14:18 ` Andrea Arcangeli
2015-10-22 15:15 ` Peter Zijlstra
2015-10-22 15:30 ` Andrea Arcangeli
2015-05-14 17:31 ` [PATCH 15/23] userfaultfd: optimize read() and poll() to be O(1) Andrea Arcangeli
2015-05-14 17:31 ` [PATCH 16/23] userfaultfd: allocate the userfaultfd_ctx cacheline aligned Andrea Arcangeli
2015-05-14 17:31 ` [PATCH 17/23] userfaultfd: solve the race between UFFDIO_COPY|ZEROPAGE and read Andrea Arcangeli
2015-05-14 17:31 ` [PATCH 18/23] userfaultfd: buildsystem activation Andrea Arcangeli
2015-05-14 17:31 ` [PATCH 19/23] userfaultfd: activate syscall Andrea Arcangeli
2015-08-11 10:07 ` [Qemu-devel] " Bharata B Rao
2015-08-11 13:48 ` Andrea Arcangeli
2015-08-12 5:23 ` Bharata B Rao
2015-09-08 6:08 ` Michael Ellerman
2015-09-08 6:39 ` Bharata B Rao
2015-09-08 7:14 ` Michael Ellerman
2015-09-08 10:40 ` Michael Ellerman
2015-09-08 12:28 ` Dr. David Alan Gilbert
2015-09-08 8:59 ` Dr. David Alan Gilbert
2015-09-08 10:00 ` Bharata B Rao [this message]
2015-09-08 12:46 ` Dr. David Alan Gilbert
2015-09-08 13:37 ` Bharata B Rao
2015-09-08 14:13 ` Dr. David Alan Gilbert
2015-05-14 17:31 ` [PATCH 20/23] userfaultfd: UFFDIO_COPY|UFFDIO_ZEROPAGE uAPI Andrea Arcangeli
2015-05-14 17:31 ` [PATCH 21/23] userfaultfd: mcopy_atomic|mfill_zeropage: UFFDIO_COPY|UFFDIO_ZEROPAGE preparation Andrea Arcangeli
2015-05-14 17:31 ` [PATCH 22/23] userfaultfd: avoid mmap_sem read recursion in mcopy_atomic Andrea Arcangeli
2015-05-22 20:18 ` Andrew Morton
2015-05-22 20:48 ` Andrea Arcangeli
2015-05-22 21:18 ` Andrew Morton
2015-05-23 1:04 ` Andrea Arcangeli
2015-05-14 17:31 ` [PATCH 23/23] userfaultfd: UFFDIO_COPY and UFFDIO_ZEROPAGE Andrea Arcangeli
2015-05-18 14:24 ` [PATCH 00/23] userfaultfd v4 Pavel Emelyanov
2015-05-19 21:38 ` Andrew Morton
2015-05-19 21:59 ` Richard Weinberger
2015-05-20 14:17 ` Andrea Arcangeli
2015-05-20 13:23 ` Andrea Arcangeli
2015-05-21 13:11 ` Kirill Smelkov
2015-05-21 15:52 ` Andrea Arcangeli
2015-05-22 16:35 ` Kirill Smelkov
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