[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [PATCH for-4.16 v6] gnttab: allow setting max version per-domain
- To: Roger Pau Monne <roger.pau@xxxxxxxxxx>, <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
- Date: Thu, 4 Nov 2021 12:56:25 +0000
- Arc-authentication-results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=citrix.com; dmarc=pass action=none header.from=citrix.com; dkim=pass header.d=citrix.com; arc=none
- Arc-message-signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=microsoft.com; s=arcselector9901; h=From:Date:Subject:Message-ID:Content-Type:MIME-Version:X-MS-Exchange-AntiSpam-MessageData-ChunkCount:X-MS-Exchange-AntiSpam-MessageData-0:X-MS-Exchange-AntiSpam-MessageData-1; bh=jEzrk8E4XJmCR/FBRCX9U5kAowOT4EQsSDSaetAW0Xg=; b=APp7DfFcVMoKTUforJQ8NJ4i7+XNBPS0PdsFXN7m8rR3N4EdfwJc9W/5Uqf5IqGqJ7FPqSgDffJoe+qMYt0mRjROE7rtay4SwB3Ve/m47N5SAQipF5elbOhduZacwR1sgh8GM2estq4lUkoJaP6Qz4X7Hfg5TWJKPNnJk/Zmo7byG4uhcmP0xM+KLLTQBBsmT6yFAhF6PxhHwbFseDNVZAVHNmOs7ifvWPVWycggnN3BO75VcSk3T8u5erFVNnBgnnnpDEmvOPJUZrdnRVc1g8D5F6Xnx44UuNvxN1JuTedckYzNHZHLwfMad/hl/OhLVXqmGuCaWRkbOiIotopQgA==
- Arc-seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=SCuaSNZaPX1CZLpEK/FGMMG/nFhPPP/52dl5dmi1JSRmaPJm2tiM/csWCOCqIBU+Zx4n37oYXUl4LtsX2EMCC9NF4tSPm0dGQ3ek8WbzUimjYYJ/6dEraV7m7ClCTouN3b0DLiumgOOxcGqmvDVTl1Z4za611Xw1dTgGb2UgT3RDD3oDqoeKTgu0F2jvi/RxVJZO+XNZc0tD6k7UKXL/A5ZLEw04t7+G+E5MDuwpJiENHgxE8juknNwhuCj9sHrSSNzZUPqeS0KCTIu1TQ2Dge2955xm6UuKizrhVqNsUE/3aHwqaUQr/UxcsiCc5YaS/cG6Jamo8wVF8DNMBtOAKg==
- Authentication-results: esa1.hc3370-68.iphmx.com; dkim=pass (signature verified) header.i=@citrix.onmicrosoft.com
- Cc: Wei Liu <wl@xxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxx>, "Jan Beulich" <jbeulich@xxxxxxxx>, Julien Grall <julien@xxxxxxx>, "Stefano Stabellini" <sstabellini@xxxxxxxxxx>, Anthony PERARD <anthony.perard@xxxxxxxxxx>, Juergen Gross <jgross@xxxxxxxx>, "Christian Lindig" <christian.lindig@xxxxxxxxxx>, David Scott <dave@xxxxxxxxxx>, Volodymyr Babchuk <Volodymyr_Babchuk@xxxxxxxx>, Ian Jackson <iwj@xxxxxxxxxxxxxx>
- Delivery-date: Thu, 04 Nov 2021 12:56:56 +0000
- Ironport-data: A9a23:QuUdl6oW3/rU+lQlIEpRvP3Wv8teBmJHYxIvgKrLsJaIsI4StFCzt garIBmPPfzfZWLxf9h3b4WypkgB6sCHy4c1SVc+/y5hQSsQp5uZCYyVIHmrMnLJJKUvbq7GA +byyDXkBJppJpMJjk71atANlZT4vE2xbuKU5NTsY0idfic5Dnd+4f5fs7Rh2Ncx2IDlW1rlV e7a+KUzBnf0g1aYDUpMg06zgEsHUCPa4W5wUvQWPJinjXeG/5UnJMt3yZKZdhMUdrJ8DO+iL 9sv+Znilo/vE7XBPfv++lrzWhVirrc/pmFigFIOM0SpqkAqSiDfTs/XnRfTAKtao2zhojx/9 DlCnZqSFVYCNIDMoccYUidoOC9hPKBY3paSdBBTseTLp6HHW37lwvEoB0AqJ4wIvO1wBAmi9 9RBdmpLNErawbvrnvTrEYGAhex6RCXvFKoZtmtt0nfyCvE+TIqYa67L+cVZzHE7gcUm8fP2O pVFNGQwN0+ojxtnFgYSWbUSxL2SqmjbUh1kiFaaj/Aryj2GpOB2+Oe0a4eEEjCQfu1XlEuFo mPN/0ziHwoXcteYzFKt8G+oh+LJtTP2XsQVDrLQ3u5nhhify3IeDDUSVECnur+ph0imQdVdJ kcIvC00osAa60iDXtT7GRqirxaspQUAUtBdF+k77gClyafO5QudQG8eQVZpVtsis8MnQC0w4 XWAldjpGD9HvaWcTDSW8bL8hTKtOwAFIGkafygGQAAZpd75r+kbjB3VSc14OLWoldCzEjb1q xiGpTYzr68ehskK0+O851+vvt63jsGXFEhvvFyRBz/7qFMiDGK4W2C2wV75sadrJquZd3qEv UY0sMaB7e0QK7jYwURhX94xNL2u4v+ENhjVjlhuA4Qt+lyRxpKzQWxDyGogfRk0a67obResO RaO4l0JuPe/KVPzNfcvC79dHfjG2kQJ+T7NcvnPJuRDbZFqHONs1HE/PBXAt4wBfaVFrE3eB Xt5WZrzZZr5If4+pNZTewv7+eV7rszZ7TmCLa0XNzz9jdKjiIe9EN/pymemYOEj97+jqw7I6 dtZPMbi40wBC7CvPHSPqN5JdQFiwZ0H6Xbe8Zw/mgmreFsOJY3cI6WJneNJl3JNxvw9ehj0E oGVBRYDlQuXaYzvIgSWcHFzAI4Drr4kxU/XyRcEZA7ys1B6ON7HxP5GK/MfIOl2nMQ+nKUcZ 6RUJK297gFnF22vF8I1NsKm8uSPtX2D2GqzAsZSSGJgI84+HFGQpYKMk8mG3HBmMxdbfPAW+ tWI/gjaXYACV0JlCsPXY+io1FS/oT4Wn+caYqcCCoA7lJzE/Nc4JirvoOUwJs1QexzPyiHDj 1SdAAsCpPmLqIgwqYGbiaeBpoavMu1/AksFQDWLsefobXHXrji53ItNcOeUZjSBBmn6z7qvO LdOxPbmPfxZwFsT69hgE6xmxL4V7sf0o+MI1RxtGXjGNgz5Cr5pLnSc89NIs6lBmu1QtQesA xrd8dhGI7SZfsjiFQdJdgYia+2C09ASmyXTsqtpcBmruncv8ePeA0tIPhSKhChMF5dPMdsok bU7pcobyw2jkR52YNyIuT9ZqjaXJXsaXqR56pxDWN33ihAmw01paIDHDnOk+4mGbthBPxV4I jKQg6ae1b1QylCbLig2HHnJm+FcmY4PqFZBy1pbfwaFnd/Mh/kW2hxN8GtoElQJn0sfi+8ja HJ2M0BVJLmV+2Y6jcdOaGmgBgVdCUDL4Uf20VYIyDXUQkTAurYh94Hh1TJhJHwkzl8=
- Ironport-hdrordr: A9a23:Va30CqlEzM2H4AApOplDlBZ1F3zpDfO+imdD5ihNYBxZY6Wkfp +V8sjzhCWatN9OYh0dcLC7WJVpQRvnhPlICPoqTMmftW7dyRSVxeBZnPffKljbehEWmdQtrp uIH5IOceEYSGIK8PoSgzPIYOrIouP3iJxA7N22pxwGIHAIGsMQnTuRSDzrdHGeLDM2dabRf6 Dsg/avyQDQHUj/Iv7LfEXsCIP41qz2fd/dEFI7Li9izDPLoSKj6bb8HRTd9hACUwlXybNn1W TeiQT26oiqrvn+k3bnpiHuxqUTvOGk5spIBcSKhMRQAjLwijywbIAkf7GZpjg6rMym9V5vut jRpBULOdh19hrqDy6IiCqo/zOl/Ccl6nfkx1PdqXz/ofbhTDZ/MMZFjZIxSGqT12MQ+PVHlI 5b1WOQsJRaSTnamj7m2tTOXxZ20mKpvHsLi4co/j9ieLpbTIUUgZ0U/UtTHptFNjn98pobHO 5nC9yZzOpKcGmdc2vSsgBUsZyRt0wIb1K7q3U5y4ioO2A8pgE/86JY/r1fop44zuN+d3EejN 60dJiBl9l1P4crhOxGdb48qPCMexjwqCT3QSuvyGTcZdQ60k322unKCZUOlauXkc8zvdYPcK qoaiIviYd1QTO3NfGz
- Ironport-sdr: iHNCIau0hJkGgg26qn+sD9vX+27O8kC+8Xl0/dJM9SI4Xeh5Edt5MUgA/R2VuuEUKSeILRBFGG kRRnxoCl4s3FQ8kCB3nhPaKaeKobyQ1tRFgeR45vcIFu6WnTUg5Eoi8qdD4eaq7jl/72CiRER6 J3K40ok14f8vg0lKMgvpacleXDq8naIpsqJogtxzd0eP+wmKU4M1C/QePIIC0VlZ1jw7aEziDw NGnuorAFZuTedQQ+hRJ7RIY9EEBs7xUpfm+gPHJ7nxEUoDnz7fUgHagkquHy4A9Kfpqc0LDrPf BlubxCWowT2GUz4hRpMDOtvs
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 04/11/2021 10:48, Roger Pau Monne wrote:
> Introduce a new domain create field so that toolstack can specify the
> maximum grant table version usable by the domain. This is plumbed into
> xl and settable by the user as max_grant_version.
>
> Previously this was only settable on a per host basis using the
> gnttab command line option.
>
> Note the version is specified using 4 bits, which leaves room to
> specify up to grant table version 15. Given that we only have 2 grant
> table versions right now, and a new version is unlikely in the near
> future using 4 bits seems more than enough.
>
> xenstored stubdomains are limited to grant table v1 because the
> current MiniOS code used to build them only has support for grants v1.
> There are existing limits set for xenstored stubdomains at creation
> time that already match the defaults in MiniOS.
>
> Signed-off-by: Roger Pau Monné <roger.pau@xxxxxxxxxx>
Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
Thankyou.
|
