From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-wm1-f42.google.com (mail-wm1-f42.google.com [209.85.128.42]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id A48FF3B14DE for ; Fri, 21 Aug 2026 14:05:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.42 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787321145; cv=none; b=kaT3BM8Iu1UdWToAQ2tVl+RRfP7naBPVda4yKIkvKfOdRM15XsU3gVQbxroPaxlJBJ1vfLQhoHozLnbUDZGrSJU0DZqvR6bFQQqrS2H59H86nB3KKRf0jtKkc3AOOWVPf66+WiMgSznVtTpjhSfhLwo9VQVvUNpGrEru8bvrgOU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1787321145; c=relaxed/simple; bh=jDrIyCe2jaCiIraTFxwU4uL7bpB+DZ42EwaByqhvMF4=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=Kx/zhkgNR/f/5T7j8Yi4FHT9fszUDn3Ki2fCkH/YTvGA/amrm1bbVLBbF8UFqak+V2AvyiR4WD1Eyvjs4ASRUjoH1Gj5ITWMmn1MX7L+0v7uZAtqYgx+x7v6snQ7nm0oMNC+M1HNSJIAXPe6+aHSmxwj5f/YSMoBIFd0pLNClYs= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=L/kNl2pa; arc=none smtp.client-ip=209.85.128.42 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="L/kNl2pa" Received: by mail-wm1-f42.google.com with SMTP id 5b1f17b1804b1-4955aa106b1so9804695e9.0 for ; Fri, 21 Aug 2026 07:05:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1787321142; x=1787925942; darn=vger.kernel.org; h=content-transfer-encoding:content-type:in-reply-to:from :content-language:references:cc:to:subject:user-agent:mime-version :date:message-id:from:to:cc:subject:date:message-id:reply-to :content-type; bh=sfvUUTP3o9O2j15EPReGLnJgVKtQAvfjBsA4ztGbKes=; b=L/kNl2pa6fXvkUUuaH9Zb7JE72s4U8rj94AzIOveIZX8BgcT491AbmofQmr7zsKqZd Ki1wrzpKagDN/sxRE/kD0IICGBXOPxoBE+mO+CE61haP+Vcp2fBJ1Gaw91d/STT1741T 5UQfIjfYTojWkExncGVHzEqT5TM6xziduBZnOgvLpRdFQZbQ8LWou2qEzb2FZsxNVBAM MWtHDGhQi/AFpDilduEbXpFg+Upk9SiYOP+YNmbswB92e1N4i4pJmq+vqSu+hrrgoN7z 5XO98aQZR3dom5/jyxn6eFCr+jUOB6lzyMyRRZ+b3W7eQmAYXsUZOWMPdFOC2j6GwACg rYeg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1787321142; x=1787925942; h=content-transfer-encoding:content-type:in-reply-to:from :content-language:references:cc:to:subject:user-agent:mime-version :date:message-id:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to:content-type; bh=sfvUUTP3o9O2j15EPReGLnJgVKtQAvfjBsA4ztGbKes=; b=LXnLGSEMMvwi013Hua+BeKMN15PdDcgZM8wBsHEdoXC4U30UCHulJhtKeB9dAWa1aI 69+TuCWxG5kXRKNbQdevubTNIg5kUhn9raLqcz/zddKwinV7slselIzHlJTy/SDWeYj1 5LTF0dV8A6jEvyLacwsPzTu/j/1FLmJfWaIztfnmZrfKS0Gs/0sVwLk0nPp6LQNWQN7c JA1f3PXBHX2ttyYbBB92T7eD9UySDfzfmQ7BosHqpmsP51EJl+qK2tXYLFyfT5nU9QuC Id1ZZNnr/BDTSg8cxj1Jpy8GnGKYuDYGqU4yw1maysEYgm7Ran+T+fau2FTkrA8YeOzs BMbg== X-Forwarded-Encrypted: i=1; AHgh+Rp8LcOigTSXRyIwzzSDLSYTZl6vxX24j1X+z6VTDuinPlJxtyIlRLxH1I/0tPLcc3SNlGzmYK2jmA3kza8=@vger.kernel.org X-Gm-Message-State: AOJu0YxpTfPTqglbXNZhCP/uqbe+M5+BC7Bo5QsMa8p9DDsL35NEnQtq bs4n2+itsRQ1+tNz9v2+kIWcsdC2Lvdrdmy80EyZmqzlTYIE2KhiaeGZ X-Gm-Gg: AR+sD13dRvuyVCCOfMl+4PLk38pK3NOde8R2j/KCnaosd/nXDgMmDymupmmhlOKhnWE xtSY5Iy2wkPeZHjJQhGauzw2cWpD3vh73NhhZOwJGFZ2l6FUuaOSVBbeiuVckDfzkXlUEY0j9Jd T1IkUALp5IDiwy0BbRgtP3CPJe4/FEVK3dwHLq4MxPoejLKcu4aWtBI7gWfFAKBXRQGp9HZ0bF+ A75d4bV+/vKFko/ND7zdMuKIg0qNTrG3gJwZ42iVOA8jt3isLwMxPCHHcuJH289gaz4S6pz3GSf y2pq95YS1aJIfgr8Q1iTY960aWMDVQamFO6m+Us5sEtM7u3By/JmtCowUvUIG+pfbTB914sxctx Epu5ShZU2ndjaKbara22bgfllANSGvO4Sva3uGNzvWdZZFRHMlfzWt3oNdfc51G/xIdmciNFYnD dzdurHOSn3RRm8yYzleKWpxowxkD73Tpgnm3UemY8sMyw6/JsF4iq0ktFmh4Si5KlR4OpGxUlmy Io7eelRO9awijE= X-Received: by 2002:a05:600c:46d1:b0:492:4e09:9fc1 with SMTP id 5b1f17b1804b1-499b8469f20mr84781845e9.15.1787321141718; Fri, 21 Aug 2026 07:05:41 -0700 (PDT) Received: from [10.45.28.226] ([15.248.3.94]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-499b9049f84sm29305385e9.0.2026.08.21.07.05.40 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 21 Aug 2026 07:05:41 -0700 (PDT) Message-ID: <986b9e8f-f136-41af-9ded-8bece569c0c0@gmail.com> Date: Fri, 21 Aug 2026 15:05:39 +0100 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v5 2/5] KVM: arm64: Add pre_fault_memory implementation To: Alexandru Elisei , "Aneesh Kumar K.V" Cc: maz@kernel.org, oupton@kernel.org, pbonzini@redhat.com, joey.gouly@arm.com, seiden@linux.ibm.com, suzuki.poulose@arm.com, yuzenghui@huawei.com, catalin.marinas@arm.com, will@kernel.org, shuah@kernel.org, corbet@lwn.net, vladimir.murzin@arm.com, linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, linux-doc@vger.kernel.org, isaku.yamahata@intel.com, Jack Thomson References: <20260612162354.73378-1-jackabt.amazon@gmail.com> <20260612162354.73378-3-jackabt.amazon@gmail.com> Content-Language: en-US From: "Thomson, Jack" In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Hi Aneesh and Alex On 11/08/2026 5:03 pm, Alexandru Elisei wrote: > On Mon, Aug 03, 2026 at 11:36:33AM +0530, Aneesh Kumar K.V wrote: >> But both gmem_abort() and user_mem_abort() handle -EAGAIN internally, don't they? > > I think you're right, please ignore my comment about an existing mapping with > is_protected_kvm_enabled(). Thanks Aneesh, yeah that's the intent. Vincent pointed me to the pgt->pkvm_mappings interval tree that can be used to detect the existing mappings in pKVM, so I'll be updating to use that in v6. -- Thanks, Jack