From: Olaf Hering <olaf@aepfle.de>
To: Jan Beulich <jbeulich@suse.com>
Cc: xen-devel@lists.xenproject.org
Subject: Re: obtain a list of granttable PFNs from toolstack
Date: Wed, 28 Apr 2021 13:03:46 +0200 [thread overview]
Message-ID: <20210428130346.2477ffda.olaf@aepfle.de> (raw)
In-Reply-To: <d508af0b-dd4a-7c13-f33e-bc60a4fb7272@suse.com>
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Am Wed, 28 Apr 2021 12:42:54 +0200
schrieb Jan Beulich <jbeulich@suse.com>:
> It might help if you would outline what you're actually after by
> knowing a domain's active grants.
There is REC_TYPE_VERIFY, which will re-transmit all memory of a paused domU and compare what was previously transferred. Last time I used it a large number of pages are different. I did not spent time to dig further into it, what pfns are affected, how the pages differ. I suspect the backends do still write into the granted pages, hence the question.
I think the domU may undo all grants during its suspend anyway, that is something to explore as well.
Olaf
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next prev parent reply other threads:[~2021-04-28 11:04 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-28 7:50 obtain a list of granttable PFNs from toolstack Olaf Hering
2021-04-28 9:49 ` Jan Beulich
2021-04-28 10:17 ` Olaf Hering
2021-04-28 10:42 ` Jan Beulich
2021-04-28 11:03 ` Olaf Hering [this message]
2021-04-28 11:43 ` Andrew Cooper
2021-04-28 12:50 ` Olaf Hering
2021-04-28 11:10 ` Andrew Cooper
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