From: Pavel Machek <pavel@ucw.cz>
To: Adrian Catangiu <acatan@amazon.com>
Cc: linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
qemu-devel@nongnu.org, kvm@vger.kernel.org,
linux-s390@vger.kernel.org, gregkh@linuxfoundation.org,
graf@amazon.com, arnd@arndb.de, ebiederm@xmission.com,
rppt@kernel.org, 0x7f454c46@gmail.com, borntraeger@de.ibm.com,
Jason@zx2c4.com, jannh@google.com, w@1wt.eu, colmmacc@amazon.com,
luto@kernel.org, tytso@mit.edu, ebiggers@kernel.org,
dwmw@amazon.co.uk, bonzini@gnu.org, sblbir@amazon.com,
raduweis@amazon.com, corbet@lwn.net, mst@redhat.com,
mhocko@kernel.org, rafael@kernel.org, mpe@ellerman.id.au,
areber@redhat.com, ovzxemul@gmail.com, avagin@gmail.com,
ptikhomirov@virtuozzo.com, gil@azul.com, asmehra@redhat.com,
dgunigun@redhat.com, vijaysun@ca.ibm.com, oridgar@gmail.com,
ghammer@redhat.com
Subject: Re: [PATCH v4 1/2] drivers/misc: sysgenid: add system generation id driver
Date: Wed, 27 Jan 2021 23:15:05 +0100 [thread overview]
Message-ID: <20210127221505.GB24799@amd> (raw)
In-Reply-To: <1610453760-13812-2-git-send-email-acatan@amazon.com>
[-- Attachment #1: Type: text/plain, Size: 425 bytes --]
Hi!
> - Solution
>
> The System Generation ID is a simple concept meant to alleviate the
> issue by providing a monotonically increasing u32 counter that changes
> each time the VM or container is restored from a snapshot.
I'd make it u64.
But as people explained, this has race problems that may be impossible
to solve?
Best regards,
Pavel
--
http://www.livejournal.com/~pavelmachek
[-- Attachment #2: Digital signature --]
[-- Type: application/pgp-signature, Size: 181 bytes --]
next prev parent reply other threads:[~2021-01-27 22:16 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-12 12:15 [PATCH v4 0/2] System Generation ID driver and VMGENID backend Adrian Catangiu
2021-01-12 12:15 ` [PATCH v4 1/2] drivers/misc: sysgenid: add system generation id driver Adrian Catangiu
2021-01-12 13:08 ` Greg KH
2021-01-21 9:54 ` Catangiu, Adrian Costin
2021-01-12 13:08 ` Michael S. Tsirkin
2021-01-21 12:48 ` Catangiu, Adrian Costin
2021-01-19 22:34 ` Randy Dunlap
2021-01-27 22:15 ` Pavel Machek [this message]
2021-02-02 14:32 ` Michael S. Tsirkin
2021-01-12 12:16 ` [PATCH v4 2/2] drivers/virt: vmgenid: add vm " Adrian Catangiu
2021-01-12 12:48 ` [PATCH v4 0/2] System Generation ID driver and VMGENID backend Michael S. Tsirkin
2021-01-21 10:28 ` Catangiu, Adrian Costin
2021-01-27 12:47 ` Michael S. Tsirkin
2021-01-28 12:58 ` Alexander Graf
2021-02-02 14:34 ` Michael S. Tsirkin
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20210127221505.GB24799@amd \
--to=pavel@ucw.cz \
--cc=0x7f454c46@gmail.com \
--cc=Jason@zx2c4.com \
--cc=acatan@amazon.com \
--cc=areber@redhat.com \
--cc=arnd@arndb.de \
--cc=asmehra@redhat.com \
--cc=avagin@gmail.com \
--cc=bonzini@gnu.org \
--cc=borntraeger@de.ibm.com \
--cc=colmmacc@amazon.com \
--cc=corbet@lwn.net \
--cc=dgunigun@redhat.com \
--cc=dwmw@amazon.co.uk \
--cc=ebiederm@xmission.com \
--cc=ebiggers@kernel.org \
--cc=ghammer@redhat.com \
--cc=gil@azul.com \
--cc=graf@amazon.com \
--cc=gregkh@linuxfoundation.org \
--cc=jannh@google.com \
--cc=kvm@vger.kernel.org \
--cc=linux-doc@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-s390@vger.kernel.org \
--cc=luto@kernel.org \
--cc=mhocko@kernel.org \
--cc=mpe@ellerman.id.au \
--cc=mst@redhat.com \
--cc=oridgar@gmail.com \
--cc=ovzxemul@gmail.com \
--cc=ptikhomirov@virtuozzo.com \
--cc=qemu-devel@nongnu.org \
--cc=raduweis@amazon.com \
--cc=rafael@kernel.org \
--cc=rppt@kernel.org \
--cc=sblbir@amazon.com \
--cc=tytso@mit.edu \
--cc=vijaysun@ca.ibm.com \
--cc=w@1wt.eu \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).