[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
RE: [PATCH 1/2] VMX/cpu-policy: check availability of RDTSCP and INVPCID
- To: "Beulich, Jan" <JBeulich@xxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxxx>
- From: "Tian, Kevin" <kevin.tian@xxxxxxxxx>
- Date: Fri, 26 May 2023 04:53:40 +0000
- Accept-language: en-US
- Arc-authentication-results: i=1; mx.microsoft.com 1; spf=pass smtp.mailfrom=intel.com; dmarc=pass action=none header.from=intel.com; dkim=pass header.d=intel.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=SaulrSyKYfs1/+/Q4ScjH2ac5iTQsTWF0ItlPcCb8aE=; b=lq7ZS2TUjhMgBR0VogLGsRcB3ifIkAQXspk/oH++Xm0UU4C3ObBbg5ilWGdh6d2CTEGvIewen8oAqgGrQHfZyoaruaV213vV8RInjDXeWyq3omlIbF7BOrSSi3Z5EDaJotFiGU9XF23n7E/kRGjcyaONPf1NIaJtwmgFuf1iTup7GKN1f2dpycrB/p9awMgGG5rcaZ50FwaMw6ps6Udssokw99v96QkhTL8g0Fxe3xxXBZhUhKpREjWZohMcIThqCnAJdHIRUhPC1uGlnZ577a7WKDjGIOiMPv2KrYsH8dtFQ3SYYq5eukmF2h33Z759NODdpt8hyt1ua+Fo4lUV/Q==
- Arc-seal: i=1; a=rsa-sha256; s=arcselector9901; d=microsoft.com; cv=none; b=F3orqFzX26qLaAQ7ZAwOlOYkJ0LwR87NDhxkc5f6o5GPvkHwM0GpmVXcjc75r/BUJYoxZipkn+gc78EYdU9II8NzsiP06S5KRvy9eI58oDn0NbMXPNJRWX/mm0sGUgxkUOyKm5aBe6CgNkqNfKQWNr3M7hIeR9Vq+kwXR96epFZeXSucMM2pdGIOd9a6LD5lfzDHWeHvPfLGwF++a3WtXLipazNInTYZ0HsHMq0AAcNPTD+1qir6Tv3E736aArr5CL4HvJKf0EkpLDjbG9nt06UrSGz4xBqyRGxe99dglEJba9P6zYsxsn/53SkSXeG1m2WTNy+1KRLuqAJoFczagg==
- Authentication-results: dkim=none (message not signed) header.d=none;dmarc=none action=none header.from=intel.com;
- Cc: "andrew.cooper3@xxxxxxxxxx" <andrew.cooper3@xxxxxxxxxx>, Wei Liu <wl@xxxxxxx>, Pau Monné, Roger <roger.pau@xxxxxxxxxx>, "Nakajima, Jun" <jun.nakajima@xxxxxxxxx>
- Delivery-date: Fri, 26 May 2023 04:54:01 +0000
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
- Thread-index: AQHZeD7CR06R3EJga0ikV9LB8IqFva9sK3uQ
- Thread-topic: [PATCH 1/2] VMX/cpu-policy: check availability of RDTSCP and INVPCID
> From: Jan Beulich <jbeulich@xxxxxxxx>
> Sent: Wednesday, April 26, 2023 8:58 PM
>
> Both have separate enable bits, which are optional. While on real
> hardware we can perhaps expect these VMX controls to be available if
> (and only if) the base CPU feature is available, when running
> virtualized ourselves this may not be the case.
>
> Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx>
Reviewed-by: Kevin Tian <kevin.tian@xxxxxxxxx>
|
