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X-CSE-ConnectionGUID: gIXeqrAnR3S9CS/UVjTmKA== X-CSE-MsgGUID: URIOBAh8Rna4Jp0ROVtOFA== X-IronPort-AV: E=McAfee;i="6700,10204,11253"; a="41800850" X-IronPort-AV: E=Sophos;i="6.12,145,1728975600"; d="scan'208";a="41800850" Received: from fmviesa007.fm.intel.com ([10.60.135.147]) by fmvoesa105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Nov 2024 11:02:13 -0800 X-CSE-ConnectionGUID: gB4vpH76SUOzQ8nlphxVpQ== X-CSE-MsgGUID: zNDUF5NcRLKX4ZD8eMmXOg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.12,145,1728975600"; d="scan'208";a="86788676" Received: from rfrazer-mobl3.amr.corp.intel.com (HELO [10.124.223.216]) ([10.124.223.216]) by fmviesa007-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 Nov 2024 11:02:11 -0800 Message-ID: <960d5a01-4cca-4bec-be7f-af3306c2cb5f@intel.com> Date: Mon, 11 Nov 2024 11:02:10 -0800 Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [RFC PATCH v2 3/3] x86: kvm: svm: add support for ERAPS and FLUSH_RAP_ON_VMRUN To: Amit Shah , linux-kernel@vger.kernel.org, kvm@vger.kernel.org, x86@kernel.org, linux-doc@vger.kernel.org Cc: amit.shah@amd.com, thomas.lendacky@amd.com, bp@alien8.de, tglx@linutronix.de, peterz@infradead.org, jpoimboe@kernel.org, pawan.kumar.gupta@linux.intel.com, corbet@lwn.net, mingo@redhat.com, dave.hansen@linux.intel.com, hpa@zytor.com, seanjc@google.com, pbonzini@redhat.com, daniel.sneddon@linux.intel.com, kai.huang@intel.com, sandipan.das@amd.com, boris.ostrovsky@oracle.com, Babu.Moger@amd.com, david.kaplan@amd.com, dwmw@amazon.co.uk, andrew.cooper3@citrix.com References: <20241111163913.36139-1-amit@kernel.org> <20241111163913.36139-4-amit@kernel.org> From: Dave Hansen Content-Language: en-US Autocrypt: addr=dave.hansen@intel.com; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 11/11/24 08:39, Amit Shah wrote: ... > For shadow paging guests: do not expose this feature to guests; only > expose if nested paging is enabled, to ensure context switches within > guests trigger TLB flushes on the CPU Just a note that the need for "context switch" disambiguation is pervasive across this series. Please clarify the wording everywhere.