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X-CSE-ConnectionGUID: Qxu4dw9sS5u9FRfQdPDW8w== X-CSE-MsgGUID: oWwLT+UeSqGiu8dtsB2FDg== X-IronPort-AV: E=McAfee;i="6800,10657,11533"; a="68978643" X-IronPort-AV: E=Sophos;i="6.18,214,1751266800"; d="scan'208";a="68978643" Received: from orviesa004.jf.intel.com ([10.64.159.144]) by fmvoesa105.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Aug 2025 15:36:40 -0700 X-CSE-ConnectionGUID: VZX7DiUATze0WHqdFrBwaA== X-CSE-MsgGUID: auc4kNUiTwWWIiw8VzgpMA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.18,214,1751266800"; d="scan'208";a="173809776" Received: from cmdeoliv-mobl4.amr.corp.intel.com (HELO [10.125.109.1]) ([10.125.109.1]) by orviesa004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 25 Aug 2025 15:36:40 -0700 Message-ID: <9a649ff4-55fe-478a-bfd7-f3287534499a@intel.com> Date: Mon, 25 Aug 2025 15:36:39 -0700 Precedence: bulk X-Mailing-List: iommu@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 1/1] iommu/sva: Invalidate KVA range on kernel TLB flush To: Baolu Lu , "Tian, Kevin" , Jason Gunthorpe Cc: Joerg Roedel , Will Deacon , Robin Murphy , Jann Horn , Vasant Hegde , Alistair Popple , Peter Zijlstra , Uladzislau Rezki , Jean-Philippe Brucker , Andy Lutomirski , "Lai, Yi1" , "iommu@lists.linux.dev" , "security@kernel.org" , "linux-kernel@vger.kernel.org" , "stable@vger.kernel.org" References: <20250806052505.3113108-1-baolu.lu@linux.intel.com> <20250806155223.GV184255@nvidia.com> <20250806160904.GX184255@nvidia.com> <62d21545-9e75-41e3-89a3-f21dda15bf16@intel.com> <4a8df0e8-bd5a-44e4-acce-46ba75594846@linux.intel.com> <20250807195154.GO184255@nvidia.com> <87bfc80e-258e-4193-a56c-3096608aec30@linux.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: 8bit On 8/22/25 20:26, Baolu Lu wrote: > +static struct { > +    /* list for pagetable_dtor_free() */ > +    struct list_head dtor; > +    /* list for __free_page() */ > +    struct list_head page; > +    /* list for free_pages() */ > +    struct list_head pages; > +    /* protect all the ptdesc lists */ > +    spinlock_t lock; > +    struct work_struct work; Could you explain a bit why this now needs three separate lists? Seems like pure overkill.