From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marek =?utf-8?Q?Marczykowski-G=C3=B3recki?= Subject: Re: [RFC PATCH 06/17] libxl: create vkb device only for guests with graphics output Date: Wed, 1 Aug 2018 23:45:06 +0200 Message-ID: <20180801214506.GY1371@mail-itl> References: <767b0474eebe5317b8d0a4d225043172172d0be7.1533009377.git-series.marmarek@invisiblethingslab.com> Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="===============7349695171011248292==" Return-path: Received: from all-amaz-eas1.inumbo.com ([34.197.232.57]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1fkyvg-00014p-P5 for xen-devel@lists.xenproject.org; Wed, 01 Aug 2018 21:45:13 +0000 In-Reply-To: List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" To: Jason Andryuk Cc: Ian Jackson , Wei Liu , xen-devel List-Id: xen-devel@lists.xenproject.org --===============7349695171011248292== Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="uOSyunOxC/kgwQjk" Content-Disposition: inline --uOSyunOxC/kgwQjk Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, Aug 01, 2018 at 10:30:14AM -0400, Jason Andryuk wrote: > On Mon, Jul 30, 2018 at 11:56 PM, Marek Marczykowski-G=C3=B3recki > wrote: > > The forced vkb device is meant for better performance of qemu access > > (at least according to ebbd2561b4cefb299f0f68a88b2788504223de18 "libxl: > > Add a vkbd frontend/backend pair for HVM guests"), which isn't used if > > there is no configured channel to actually access that keyboard. > > > > One can still add vkb device manually if needed. > > > > This is continuation of b053f0c4c9e533f3d97837cf897eb920b8355ed3 "libxl= : do > > not start dom0 qemu for stubdomain when not needed". >=20 > Prior to this change, was a dom0 qemu started for these entries? AFAIR not for this device alone (unless some other condition in libxl__need_xenpv_qemu triggers it). But when it is created but backend not launched, it cause timeout on frontend side. > Reviewed-by: Jason Andryuk --=20 Best Regards, Marek Marczykowski-G=C3=B3recki Invisible Things Lab A: Because it messes up the order in which people normally read text. Q: Why is top-posting such a bad thing? --uOSyunOxC/kgwQjk Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAEBCAAdFiEEhrpukzGPukRmQqkK24/THMrX1ywFAltiKeIACgkQ24/THMrX 1yxdIQf7BE8NbOqO8xud7pxSmc3njeHN9yia5BcHcSkSmmugZnQB2gO/BwhPlv48 12s6to2AS5E15PGwwKAsgmSLTtHTm8c+OtqsfatMf2YKjSQNv5AaOWaafHlS4RbF pCgCBI0NAcpmv/XsJeENpjKJbAxGQqaL5k7G9ItSbJfZygUiEDSO8L+0Fn2/5mCs yzgkFFvHu2SVBfGGl6gILt+xX663dPbwGGSiMdBB02/x2rf+xRGXDhPE1UAtckWg sFM5T8PsuF53HCqO7f6/vhkCdRSTXpJKYxnTCD/L9o7uYGiwJPrjG9aU1yD/m3Et DZgIoOuCuAqSrsgWYLDPOQqW+b1K8A== =gnbg -----END PGP SIGNATURE----- --uOSyunOxC/kgwQjk-- --===============7349695171011248292== Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: base64 Content-Disposition: inline X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KWGVuLWRldmVs IG1haWxpbmcgbGlzdApYZW4tZGV2ZWxAbGlzdHMueGVucHJvamVjdC5vcmcKaHR0cHM6Ly9saXN0 cy54ZW5wcm9qZWN0Lm9yZy9tYWlsbWFuL2xpc3RpbmZvL3hlbi1kZXZlbA== --===============7349695171011248292==--