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X-CSE-ConnectionGUID: NdUDLd/PQam1zIfPsy3Lfg== X-CSE-MsgGUID: HZ1Ka8+eRNuaLdI6W0YLgw== X-IronPort-AV: E=McAfee;i="6800,10657,11586"; a="62231665" X-IronPort-AV: E=Sophos;i="6.19,245,1754982000"; d="scan'208";a="62231665" Received: from fmviesa009.fm.intel.com ([10.60.135.149]) by fmvoesa113.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Oct 2025 10:08:54 -0700 X-CSE-ConnectionGUID: wYgqZl0LSLK/DxIMp0Pi2A== X-CSE-MsgGUID: YZlbHOmkRuS0Jnhg4hREPg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.19,245,1754982000"; d="scan'208";a="184129323" Received: from vverma7-desk1.amr.corp.intel.com (HELO [10.125.108.149]) ([10.125.108.149]) by fmviesa009-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Oct 2025 10:08:53 -0700 Message-ID: <08d64b6e-64f2-46e3-b9ef-87b731556ee4@intel.com> Date: Tue, 21 Oct 2025 10:08:52 -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 4/7] x86/kexec: Disable kexec/kdump on platforms with TDX partial write erratum To: Vishal Annapurve Cc: Juergen Gross , "Reshetova, Elena" , Paolo Bonzini , "linux-kernel@vger.kernel.org" , "kvm@vger.kernel.org" , "bp@alien8.de" , "tglx@linutronix.de" , "peterz@infradead.org" , "mingo@redhat.com" , "hpa@zytor.com" , "thomas.lendacky@amd.com" , "x86@kernel.org" , "kas@kernel.org" , "Edgecombe, Rick P" , "dwmw@amazon.co.uk" , "Huang, Kai" , "seanjc@google.com" , "Chatre, Reinette" , "Yamahata, Isaku" , "Williams, Dan J" , "ashish.kalra@amd.com" , "nik.borisov@suse.com" , "Gao, Chao" , "sagis@google.com" , "Chen, Farrah" , Binbin Wu References: <20250901160930.1785244-1-pbonzini@redhat.com> <20250901160930.1785244-5-pbonzini@redhat.com> <74a390a1-42a7-4e6b-a76a-f88f49323c93@intel.com> <27d19ea5-d078-405b-a963-91d19b4229c8@suse.com> <5b007887-d475-4970-b01d-008631621192@intel.com> 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 10/18/25 08:54, Vishal Annapurve wrote: > Circling bank on this topic, I would like to iterate a few points: > 1) Google has been running workloads with the series [1] for ~2 years > now, we haven't seen any issues with kdump functionality across kernel > bugs, real hardware issues, private memory corruption etc. Great points and great info! As a next step, I'd expect someone (at Google) to take this into consideration and put together a series to have the kernel comprehend those points.