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X-CSE-ConnectionGUID: CpcU6/2MQVOl9RbyPCGxqg== X-CSE-MsgGUID: J/oNviswQ1SyCDioia0rpw== X-IronPort-AV: E=McAfee;i="6800,10657,11894"; a="76412063" X-IronPort-AV: E=Sophos;i="6.25,258,1779174000"; d="scan'208";a="76412063" Received: from orviesa008.jf.intel.com ([10.64.159.148]) by fmvoesa110.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Sep 2026 14:37:05 -0700 X-CSE-ConnectionGUID: 1rwl89KwRY6m3EdPYB8JZA== X-CSE-MsgGUID: 5L49yWTER9iE9DNsinY6/Q== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.25,258,1779174000"; d="scan'208";a="268983626" Received: from cjhill-mobl.amr.corp.intel.com (HELO [10.125.110.134]) ([10.125.110.134]) by orviesa008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Sep 2026 14:37:03 -0700 Message-ID: <9eeccb79-2b89-4d91-bbbd-75a26347ee15@intel.com> Date: Wed, 2 Sep 2026 14:37:02 -0700 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: [PATCH v13 5/5] x86/sev: Re-enable RMP optimizations on SNP guest shutdown To: Ashish Kalra , tglx@kernel.org, mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com, seanjc@google.com, peterz@infradead.org, thomas.lendacky@amd.com, herbert@gondor.apana.org.au, davem@davemloft.net, ardb@kernel.org Cc: pbonzini@redhat.com, aik@amd.com, Michael.Roth@amd.com, KPrateek.Nayak@amd.com, Tycho.Andersen@amd.com, Nathan.Fontenot@amd.com, ackerleytng@google.com, jackyli@google.com, pgonda@google.com, rientjes@google.com, jacobhxu@google.com, xin@zytor.com, pawan.kumar.gupta@linux.intel.com, babu.moger@amd.com, dyoung@redhat.com, nikunj@amd.com, darwi@linutronix.de, linux-kernel@vger.kernel.org, linux-crypto@vger.kernel.org, kvm@vger.kernel.org, linux-coco@lists.linux.dev References: 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 9/2/26 14:29, Ashish Kalra wrote: > Perform the re-optimization after a delay, using mod_delayed_work() so > that the delay timer is reset on each call. This batches multiple guest > terminations into a single pass: the re-optimization runs 10 seconds > after the *last* termination rather than after the first. > mod_delayed_work() also re-queues work that is already in-flight, so a > re-scan request during an active scan is not silently dropped. Simple enough. Reviewed-by: Dave Hansen