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Tsirkin" Subject: Re: [DISCUSSION] Allow ACPI default OEM ID and OEM table ID fields to be set. Message-ID: <20201126173738.iwrsrosnx2rzztp5@tartarus> References: <20201125132711.jqb7znxu5jpoanwi@tartarus> <20201125133251.GI30079@redhat.com> <20201125110221-mutt-send-email-mst@kernel.org> <20201125201322.urze5b7vwaa2t5sy@tartarus> <20201126051838-mutt-send-email-mst@kernel.org> <20201126125012.x6yzsou5rmlxagli@tartarus> <20201126082606-mutt-send-email-mst@kernel.org> <20201126163450.knb55wh2u7k2qgbb@tartarus> <20201126120701-mutt-send-email-mst@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable In-Reply-To: <20201126120701-mutt-send-email-mst@kernel.org> Received-SPF: pass client-ip=2a00:1450:4864:20::432; envelope-from=antoine.damhet@blade-group.com; helo=mail-wr1-x432.google.com X-Spam_score_int: -16 X-Spam_score: -1.7 X-Spam_bar: - X-Spam_report: (-1.7 / 5.0 requ) BAYES_00=-1.9, DKIM_INVALID=0.1, DKIM_SIGNED=0.1, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Igor Mammedov , lersek@redhat.com, "Richard W.M. Jones" , qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" On Thu, Nov 26, 2020 at 12:09:13PM -0500, Michael S. Tsirkin wrote: > On Thu, Nov 26, 2020 at 05:34:50PM +0100, Antoine Damhet wrote: > > On Thu, Nov 26, 2020 at 08:29:41AM -0500, Michael S. Tsirkin wrote: > > > On Thu, Nov 26, 2020 at 01:50:12PM +0100, Antoine Damhet wrote: > > > > On Thu, Nov 26, 2020 at 06:09:11AM -0500, Michael S. Tsirkin wrote: > > > > > On Wed, Nov 25, 2020 at 09:13:22PM +0100, Antoine Damhet wrote: > > > > > > On Wed, Nov 25, 2020 at 11:04:55AM -0500, Michael S. Tsirkin wr= ote: > > > > > > > On Wed, Nov 25, 2020 at 01:32:51PM +0000, Richard W.M. Jones = wrote: > > > > > > > > On Wed, Nov 25, 2020 at 02:27:11PM +0100, Antoine Damhet wr= ote: > >=20 > > [...] > >=20 > > > Exactly so I ask myself whether it's worth it, their next version > > > will check CPUID and then where are we? > >=20 > > Then I guess they will have to admit that they are purposefully blocking > > VM use and it's not our problem anymore. > >=20 > > > But maybe it's time we just changed all these IDs to e.g. QEMU. > > > We are very far from bochs generated tables by now. > >=20 > > That's a good idea, but I still think they should be user override-able > > (unless you think it would be a heavy maintenance burden, in that case > > you are king in your castle :D ) >=20 > Fundamentally there's a chance that if you get unlucky > with your OEM ID some software somewhere will look for > it and try to activate some vendor specific behaviour. > So giving users full control here isn't all that safe ... >=20 > Question btw, are you also supplying a SLIC table? In production we do not, I've only toyed with adding a dummy table to see if the `oem_id` and `oem_table_id` there were enough. >=20 >=20 > > > Question is will this cause annoyances with e.g. windows guests? > >=20 > > Windows 10 guests seems unaffected, I cannot say for the other > > versions/servers editions. > >=20 > > > Igor what's your experience with this? > >=20 > > [...] > >=20 > > --=20 > > Antoine 'xdbob' Damhet >=20 --=20 Antoine 'xdbob' Damhet