[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: x86/PV: (lack of) MTRR exposure


  • To: Juergen Gross <jgross@xxxxxxxx>
  • From: Jan Beulich <jbeulich@xxxxxxxx>
  • Date: Mon, 2 May 2022 16:50:23 +0200
  • Arc-authentication-results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=suse.com; dmarc=pass action=none header.from=suse.com; dkim=pass header.d=suse.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=zJrJbHnR5IvjWVQmiVA+rkI1XMQdg7N6W4+aC//8XL4=; b=Vr9Y6WY4j1r0dL5hT2+W9WymTo5OLJ0Fh4kvZFUpdAZ12tF3sMSIM6s7ZCD8FT+drPluC2I0T45aPWR44NpGCLzn4z9Kh2J4D47xChd6MZ5WLZVET5Y9QDIZlCFtbOj4tjqd6Fp3rDxk1e3zpPIG7Pi0CtK0Q1UcX69hNTtGbQNkuIlHaiXwsTfgaN/mU+yzz5y93vtscr4KycAO0pisZS6h3ItHPsp7d8ORYjElKw6MZyyZanwVaJU0RGgIBR4AVneUiWJa5Go3YNIcXAPvyJrOk2YX9VRaDOIYeNFBqFeX9L/U14ooC+U80Ue5iiFsvNWDsQd9ZDMsY63G/AgITA==
  • Arc-seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=RQE6WzOn6VFs3C3pVAKoldrFg0cFLJ1org+zARJVBWt0h7Lb4Rgh3mJ7FAfxCZ25Qe0AKdkqtx7mYAk+cBLE2XtApHUN6sifKQ7NTotbUdurgPu7UIZuOvigwRMafh2J/DW3SVqvXK4QXtYSxWVTabCU06nNH3+SvN6nVnFP6RP1n2yVpPgvvltYJv1VeQvA/+6aB7aEtjDhe6QAtbkgxeoU8HmSSghaq/PeK0zM0R9X8RX9f0ea/hb9mAMcm2dbmBtPN1zZcUlzv5Q8ZPHY/ksmZoQuUQKzi+7dSTfn91UYMyMMRRulHmL+xlUUPQORzlEQ78MlvZpLcnpor2ER/A==
  • Authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=suse.com;
  • Cc: "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>, Andrew Cooper <andrew.cooper3@xxxxxxxxxx>, Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>, Roger Pau Monné <roger.pau@xxxxxxxxxx>
  • Delivery-date: Mon, 02 May 2022 14:50:31 +0000
  • List-id: Xen developer discussion <xen-devel.lists.xenproject.org>

On 02.05.2022 16:25, Juergen Gross wrote:
> PAT MSR writes can be handled by special casing in xen_write_msr_safe().

You can squash the write attempt there, but that'll still confuse the caller
assuming the write actually took effect.

Jan




 


Rackspace

Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.