[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [PATCH v2] gnttab: don't silently truncate GFNs in compat setup-table handling
- To: Jan Beulich <jbeulich@xxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: Andrew Cooper <Andrew.Cooper3@xxxxxxxxxx>
- Date: Fri, 2 Dec 2022 09:50:04 +0000
- Accept-language: en-GB, en-US
- 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=gmoko/xDikgFPA4hfDSg4hjKNrTWkOYMzC4A0MqCVyY=; b=ZzXHX28cB999isii9EqDzZkhJyCDm6uAOzYgDNmAljvgkioiJstpDuQmQKH2471jxhbd9c63WNSjRB65FLsp4k7BnTbkSNNNd3C105ZqaKufwWdFRshzVXI8IPBb77YBobx3MxlAovSns8S+uJ5yTWt+mNVB4qFVU1t4qnG2fwLFMTcmxibFU2IKXOM6zBgctUBLw9//lTxxowHavl50EjkKc8Aqe6RpvCZQaTfsMdcUx1bzljWa5gCk46eYmU+0r/c4ViAEKTjZZsphZ3vPJ2vaCnc40jN/abgMdrOcz0gup63MZp325x68iWKTUYLoBu6B16bYth0Z4qT5xtLSsA==
- Arc-seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=AknxM3Mx7/qFDm7pNOMYhuQSanlOhLA8aM6UsjP2eiUK/lFi6VVPiCI5TFPjCAmiT1rIjbjq0UJqGzRfIuEZ6cCcWbnBFQq1aePb/jwBIo+nCniv5dyaWvVi/Zwt1u/E52VoaDA7WUVI9Lx2mLhKSuUAONWo48mMiJrNeTZ4Rf1p7y0fAaAx7BFT8cdhUgWEmjh4U+1eACirE9j5niT1D22nfhcYDn92V3bnKv9Fs1Wyr9dcJtJnq9WXzN0XTgo8eSIXh1c1GBNiSD6oty7anXUKEC3WYEmFvN0psOHYuU7iVW9zU7KrDAXnHrw329a+6liBVfznDEMdzlQwEnlBew==
- Authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=citrix.com;
- Cc: George Dunlap <George.Dunlap@xxxxxxxxxx>, Julien Grall <julien@xxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>
- Delivery-date: Fri, 02 Dec 2022 10:03:06 +0000
- Ironport-data: A9a23:M7s2Ya4uvLZKWMI011qDTgxRtPLGchMFZxGqfqrLsTDasY5as4F+v jBKDWuCO62KYWL1cox1bYW3oxgOupTcm9FiSws5/i0zHi5G8cbLO4+Ufxz6V8+wwm8vb2o8t plDNYOQRCwQZiWBzvt4GuG59RGQ7YnRGvynTraBYnoqLeNdYH9JoQp5nOIkiZJfj9G8Agec0 fv/uMSaM1K+s9JOGjt8B5mr9VU+4pwehBtC5gZkPKoT5geH/5UoJMl3yZ+ZfiOQrrZ8RoZWd 86bpJml82XQ+QsaC9/Nut4XpWVTH9Y+lSDX4pZnc/DKbipq/0Te4Y5iXBYoUm9Fii3hojxE4 I4lWapc6+seFvakdOw1C3G0GszlVEFM0OevzXOX6aR/w6BaGpdFLjoH4EweZOUlFuhL7W5m3 PU+GD09awK52M2JxLWae7BAnvQSFZy+VG8fkikIITDxK98DGMiGaYOVoNhS0XE3m9xEGuvYa 4wBcz1zYR/cYhpJfFAKFJY5m+TujX76G9FagAvN+exrvC6MlEooiOmF3Nn9I7RmQe18mEqCq 32A1GP+GhwAb/SUyCaf82LqjejK9c/+cNJCS+Dnr6Y06LGV7jdDExwXd1qrmOOGzU26WYJbc kEQxDV7+MDe82TuFLERRSaQonSJoxodUNp4CPAh5UeGza+8yxaUAC0IQyBMbPQitdQqXno62 1mRhdTrCDdz9rqPRhq19KqQrD60ETgYKykFfyBsZRAe/9DprYU3jxTOZtVuCqi4ipvyAz6Y6 y+OhDgzgfMUl8Fj6kmg1VXOgjbprJ6WSAcwv13TRjj8tlI/Y5O5bYu171Sd9exHMIuSUliGu j4DhtSa6+cNS5qKkURhXdkwIV1g3N7dWBW0vLKlN8NJG+iFk5J7Qb1t3Q==
- Ironport-hdrordr: A9a23:xkk2VK0xVgw2OB5Ra9uDegqjBZxxeYIsimQD101hICG9Lfb0qy n+pp4mPEHP4wr5AEtQ4uxpOMG7MBDhHQYc2/hcAV7QZnidhILOFvAs0WKC+UysJ8SazIJgPM hbAs9D4bHLbGSSyPyKmDVQcOxQjuVvkprY49s2pk0FJW4FV0gj1XYBNu/xKDwVeOAyP+tcKH Pq3Lsjm9PPQxQqR/X+IkNAc/nIptXNmp6jSRkaByQ/4A3LoSK05KX8Gx242A5bdz9U278t/U XMjgS8v8yYwrGG4y6Z81WWw4VdmdPnxNcGLMuQivINIjGpphe0aJ9nU7iiuilwhO208l4lnP TFvh9lFcVu7HH6eH2zvHLWqkjd+Qdrz0Wn5U6TgHPlr8C8bik9EdB9iYVQdQacw1Y8vflnuZ g7nV6xht5yN1ftjS7979/HW1VBjUyvu0cvluYVkjh2TZYeUrlMtoYSlXklVavoXRiKrLzPIt MeSv0018wmKG9yqEqp5lWH9ebcGUjb2C32GXTq9PbliQS+10oJsnfwjPZv4kvosqhNCKWsrt 60TJiB3tt1P7ArRLM4C+EbTcStDGvRBRrKLWKJOFziULoKInTXtvfMkf0IDU6RCe41JbYJ6e L8uWljxCcPUlOrDdfL0IxA8xjLTmn4VTPxyttG75w8vrHnXrLkPSCKVVhryqKb0r8iK9yeX+ z2NINdAvflI2erEYFV3xfmU50XLXUFSsUattsyRlrLqMPWLY/hsPDdbZ/oVfHQOCdhXnm6Dm oIXTD1KskF5ke3WmXgiByUQH/pclyXx+MGLEEbxZlm9GEgDPw+juFOsyXJ2iiiE0wzjoUmOE 1jPbjgjqS34WGr4Geg1RQdBiZg
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Thread-index: AQHZBjMFItpTUo5OfEy63HLCU7um965aWoCA
- Thread-topic: [PATCH v2] gnttab: don't silently truncate GFNs in compat setup-table handling
On 02/12/2022 09:46, Jan Beulich wrote:
> Returning back truncated frame numbers is unhelpful: Quite likely
> they're not owned by the domain (if it's PV), or we may misguide the
> guest into writing grant entries into a page that it actually uses for
> other purposes.
>
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
Reviewed-by: Andrew Cooper <andrew.cooper3@xxxxxxxxxx>
|
