From: Juan Quintela <quintela@redhat.com>
To: "Dr. David Alan Gilbert (git)" <dgilbert@redhat.com>
Cc: qemu-devel@nongnu.org, aarcange@redhat.com
Subject: Re: [Qemu-devel] [PATCH v2 01/16] postcopy: Transmit ram size summary word
Date: Fri, 24 Feb 2017 14:10:50 +0100 [thread overview]
Message-ID: <8737f3loo5.fsf@emacs.mitica> (raw)
In-Reply-To: <20170206173306.20603-2-dgilbert@redhat.com> (David Alan Gilbert's message of "Mon, 6 Feb 2017 17:32:51 +0000")
"Dr. David Alan Gilbert (git)" <dgilbert@redhat.com> wrote:
> From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
>
> Replace the host page-size in the 'advise' command by a pagesize
> summary bitmap; if the VM is just using normal RAM then
> this will be exactly the same as before, however if they're using
> huge pages they'll be different, and thus:
> a) Migration from/to old qemu's that don't understand huge pages
> will fail early.
> b) Migrations with different size RAMBlocks will also fail early.
>
> This catches it very early; earlier than the detailed per-block
> check in the next patch.
>
> Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Juan Quintela <quintela@redhat.com>
next prev parent reply other threads:[~2017-02-24 13:11 UTC|newest]
Thread overview: 73+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-06 17:32 [Qemu-devel] [PATCH v2 00/16] Postcopy: Hugepage support Dr. David Alan Gilbert (git)
2017-02-06 17:32 ` [Qemu-devel] [PATCH v2 01/16] postcopy: Transmit ram size summary word Dr. David Alan Gilbert (git)
2017-02-24 10:16 ` Laurent Vivier
2017-02-24 13:10 ` Juan Quintela [this message]
2017-02-06 17:32 ` [Qemu-devel] [PATCH v2 02/16] postcopy: Transmit and compare individual page sizes Dr. David Alan Gilbert (git)
2017-02-24 10:31 ` Laurent Vivier
2017-02-24 10:48 ` Dr. David Alan Gilbert
2017-02-24 10:50 ` Laurent Vivier
2017-02-24 13:13 ` Juan Quintela
2017-02-06 17:32 ` [Qemu-devel] [PATCH v2 03/16] postcopy: Chunk discards for hugepages Dr. David Alan Gilbert (git)
2017-02-24 13:48 ` Laurent Vivier
2017-02-06 17:32 ` [Qemu-devel] [PATCH v2 04/16] exec: ram_block_discard_range Dr. David Alan Gilbert (git)
2017-02-24 13:14 ` Juan Quintela
2017-02-24 14:04 ` Laurent Vivier
2017-02-24 16:50 ` Dr. David Alan Gilbert
2017-02-24 14:08 ` Laurent Vivier
2017-02-24 15:35 ` Dr. David Alan Gilbert
2017-02-06 17:32 ` [Qemu-devel] [PATCH v2 05/16] postcopy: enhance ram_block_discard_range for hugepages Dr. David Alan Gilbert (git)
2017-02-24 13:20 ` Juan Quintela
2017-02-24 13:44 ` Dr. David Alan Gilbert
2017-02-24 14:20 ` Laurent Vivier
2017-02-06 17:32 ` [Qemu-devel] [PATCH v2 06/16] Fold postcopy_ram_discard_range into ram_discard_range Dr. David Alan Gilbert (git)
2017-02-24 13:21 ` Juan Quintela
2017-02-24 14:26 ` Laurent Vivier
2017-02-24 16:02 ` Dr. David Alan Gilbert
2017-02-06 17:32 ` [Qemu-devel] [PATCH v2 07/16] postcopy: Record largest page size Dr. David Alan Gilbert (git)
2017-02-24 13:22 ` Juan Quintela
2017-02-24 14:37 ` Laurent Vivier
2017-02-06 17:32 ` [Qemu-devel] [PATCH v2 08/16] postcopy: Plumb pagesize down into place helpers Dr. David Alan Gilbert (git)
2017-02-24 13:24 ` Juan Quintela
2017-02-24 15:10 ` Laurent Vivier
2017-02-24 15:21 ` Dr. David Alan Gilbert
2017-02-06 17:32 ` [Qemu-devel] [PATCH v2 09/16] postcopy: Use temporary for placing zero huge pages Dr. David Alan Gilbert (git)
2017-02-24 15:31 ` Laurent Vivier
2017-02-24 15:46 ` Dr. David Alan Gilbert
2017-02-24 17:24 ` Laurent Vivier
2017-02-06 17:33 ` [Qemu-devel] [PATCH v2 10/16] postcopy: Load huge pages in one go Dr. David Alan Gilbert (git)
2017-02-24 15:54 ` Laurent Vivier
2017-02-24 16:32 ` Dr. David Alan Gilbert
2017-02-06 17:33 ` [Qemu-devel] [PATCH v2 11/16] postcopy: Mask fault addresses to huge page boundary Dr. David Alan Gilbert (git)
2017-02-24 15:59 ` Laurent Vivier
2017-02-24 16:34 ` Dr. David Alan Gilbert
2017-02-06 17:33 ` [Qemu-devel] [PATCH v2 12/16] postcopy: Send whole huge pages Dr. David Alan Gilbert (git)
2017-02-24 16:06 ` Laurent Vivier
2017-02-06 17:33 ` [Qemu-devel] [PATCH v2 13/16] postcopy: Allow hugepages Dr. David Alan Gilbert (git)
2017-02-24 16:07 ` Laurent Vivier
2017-02-06 17:33 ` [Qemu-devel] [PATCH v2 14/16] postcopy: Update userfaultfd.h header Dr. David Alan Gilbert (git)
2017-02-24 16:09 ` Laurent Vivier
2017-02-06 17:33 ` [Qemu-devel] [PATCH v2 15/16] postcopy: Check for userfault+hugepage feature Dr. David Alan Gilbert (git)
2017-02-24 16:12 ` Laurent Vivier
2017-02-06 17:33 ` [Qemu-devel] [PATCH v2 16/16] postcopy: Add doc about hugepages and postcopy Dr. David Alan Gilbert (git)
2017-02-24 13:25 ` Juan Quintela
2017-02-24 16:12 ` Laurent Vivier
2017-02-06 17:45 ` [Qemu-devel] [PATCH v2 00/16] Postcopy: Hugepage support Dr. David Alan Gilbert
[not found] ` <CGME20170213171108eucas1p147999fc8b6980ff89a67626b78b12e44@eucas1p1.samsung.com>
2017-02-13 17:11 ` Alexey Perevalov
2017-02-13 17:57 ` Andrea Arcangeli
2017-02-13 18:10 ` Andrea Arcangeli
2017-02-13 21:59 ` Mike Kravetz
2017-02-14 14:48 ` Alexey Perevalov
2017-02-17 16:47 ` Andrea Arcangeli
2017-02-20 16:01 ` Alexey Perevalov
2017-02-13 18:16 ` Dr. David Alan Gilbert
2017-02-14 16:22 ` Alexey Perevalov
2017-02-14 19:34 ` Dr. David Alan Gilbert
2017-02-21 7:31 ` Alexey Perevalov
2017-02-21 10:03 ` Dr. David Alan Gilbert
2017-02-27 11:05 ` Alexey Perevalov
2017-02-27 11:26 ` Dr. David Alan Gilbert
2017-02-27 15:00 ` Andrea Arcangeli
2017-02-27 15:47 ` Daniel P. Berrange
2017-02-27 19:04 ` Alexey Perevalov
2017-02-22 16:43 ` Laurent Vivier
2017-02-24 10:04 ` Dr. David Alan Gilbert
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