From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ej1-f45.google.com (mail-ej1-f45.google.com [209.85.218.45]) (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 8133035F8C6 for ; Thu, 20 Nov 2025 17:02:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.218.45 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763658173; cv=none; b=Opxn4TNFc21e3Qkli+TvCw3+0SMkW0DRbMlitC3CPMpw+aOypUP0uPG0O8EV2fwH96o7VPL59XL143J9qzbzaliLXBHLNg5GkZ+WhcA4vT9G9KfDjLDtd6M2gO667nwKlRqI/wrWIyzMpHlxgRTwsr2tt4OwEFqNDah0Zz86B/Y= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1763658173; c=relaxed/simple; bh=prnoehSyj4m8ypO0ivrszk1DyMOfH4hAFqfn8XEJ2c8=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=dI0x3UCHvU/Fohg5GpfP+3NN821b0/qvrasejV4b5Srzee3T0rIQQPAoVR0JCau29Q73GjxWKFh0C7ZwmxeD6EtBPOLmIsaSCRvY82bZrlLCD0FhNFE8jB7qg5ETdcYnWJ4Wr0qVe+gQowBWtdcQVlZzVhlugvdc4T9NOlLSYug= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=suse.com; spf=pass smtp.mailfrom=suse.com; dkim=pass (2048-bit key) header.d=suse.com header.i=@suse.com header.b=QGXBS62n; arc=none smtp.client-ip=209.85.218.45 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=suse.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=suse.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=suse.com header.i=@suse.com header.b="QGXBS62n" Received: by mail-ej1-f45.google.com with SMTP id a640c23a62f3a-b7636c96b9aso160723766b.2 for ; Thu, 20 Nov 2025 09:02:51 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.com; s=google; t=1763658170; x=1764262970; darn=vger.kernel.org; h=content-transfer-encoding:in-reply-to:autocrypt:from :content-language:references:cc:to:subject:user-agent:mime-version :date:message-id:from:to:cc:subject:date:message-id:reply-to; bh=Bl+OC1MiS0Cnn5dK6DVLMuhKkpdCxqrqbBE3OQ+sZDY=; b=QGXBS62n+9hDnoYjPXt7wMVsJeNOLQwYKmJRWiv4F5hLd7EnIkvtYoEQaRqzZG17b7 iLyRLu7koBWukLnLTKH6cg1A0ckn7P6myQ5flYekT6z8oHPrqbPeDfq+3fyNEEvvSASA AVDPNeuHYASHm5bkSMVns6yksC/niVAR+6RLeqSzPKzmn/Pn9986uTwRSyh30ASlyjy5 AciGI0sETCa+uBpz9xrKCjMCXzEvAzYsscFxrQBOHT7But+Px6f40Eo8qiahe2ennkXh PrZv3LQ5cUWbHEZGEVjzV5ekZhQYbIOgqBNo0KF+vZjs4aFR3XNBNXRF8jd4/bF56yVq qWpQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1763658170; x=1764262970; h=content-transfer-encoding:in-reply-to:autocrypt: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; bh=Bl+OC1MiS0Cnn5dK6DVLMuhKkpdCxqrqbBE3OQ+sZDY=; b=HcvA55LfyjEDk7Z2wjdvy1WSH6SwH76X66p58QJFMBZ8KK+h623BDoBwoeWkDmH+Ov J5zyKb+GnJ9lSX3OaC/uVTnTenzBfJTB3FrUQ1CjbC2S5iy7/OvobB0rWeZjjV+K19x4 oat93gsky9Thcvu8ZWkh/EZ8y0EfqAjM3c2WBlluZX3SOOhUe4b9zap7rlKshlG+/8Sx vJ/+5geCay0b3OEbKmDKZt+TSLZVJSlXO3L//bkHtdzuJsgYKG3YcRXyr5NEBVRnXnWq 7DOIQXWsi/LxlA4Ch9oehhcqjovClboNfD/mAolrRcv9xceU+KaPTTaKJi2BDznfT2M+ KjmQ== X-Gm-Message-State: AOJu0YwFGXwyzvc2yjo48TNkDdcUbK1KOHjgrvwf6mFnLnV9MQ9zDJO0 sN4GkLxE2Dlhg8vAxeXw2yXpi/PFqRHW7xqd8jDr+nmJyvaKRnydVqpFf3G3JW3vqkE= X-Gm-Gg: ASbGncs7Ny9TDGjzNOUHeIkxv5D+lhuHDWEiVWZkEWL0BA8tZ2CRHT/ASxZnbO8GTtb JM5ixkxp71ibnoRmPFsCzv4SxkMAL51ADtgBvsXgvPXhqPpJb3bHN1If4jHodN7WkPe71KVkQPp l5YSZlQqw6kAaBWXtyGJCf058TdeTCI15pdSsO+7BI/y1ktfo5YTJPo3gk5bO+POtok3WOXnXJ0 GyjXlFdJLzF/azDm5hS9LKF6RhlNeVpYnW0MY/yk3vhMLev5kR82OWAI6L2dXoHTVjeh82TbIPR pnK26SC+6zh1NGbuez7SWcWtyosMCHjtGhT+WJT7ABhGJ1knP1N/5Hdf1OTFGbGfW+LShHQUCcH oIvb4iuRYRn/RGQMQOGidkRaV/C/7FwCtzgfGPBlk88/HyBaiYchR6AKczczqlM6pxPXmFc6XaT 1e2gSVyJ5NKw3w4MR6mhqfL2h9K0ViOjAWguvK X-Google-Smtp-Source: AGHT+IHxRCGNYcYOTr5xQ+EnAVFmCGZq+XQp/LseGIfeRHCydH1yH/nxDz4v0W3I70bpR45uWAt9Ww== X-Received: by 2002:a17:907:7246:b0:b76:4c8f:2cd8 with SMTP id a640c23a62f3a-b766ac652eemr23630466b.55.1763658169851; Thu, 20 Nov 2025 09:02:49 -0800 (PST) Received: from [192.168.0.20] (nborisov.ddns.nbis.net. [85.187.216.236]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b7654fd4f14sm242168366b.35.2025.11.20.09.02.48 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 20 Nov 2025 09:02:49 -0800 (PST) Message-ID: <7a9f0bae-9a5a-4ece-ade6-68a6b01d4c68@suse.com> Date: Thu, 20 Nov 2025 19:02:47 +0200 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 v4 03/11] x86/bhi: Make the depth of BHB-clearing configurable To: Pawan Gupta , x86@kernel.org, David Kaplan , "H. Peter Anvin" , Josh Poimboeuf , Sean Christopherson , Paolo Bonzini , Borislav Petkov , Dave Hansen Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org, Asit Mallick , Tao Zhang References: <20251119-vmscape-bhb-v4-0-1adad4e69ddc@linux.intel.com> <20251119-vmscape-bhb-v4-3-1adad4e69ddc@linux.intel.com> Content-Language: en-US From: Nikolay Borisov Autocrypt: addr=nik.borisov@suse.com; keydata= xsFNBGcrpvIBEAD5cAR5+qu30GnmPrK9veWX5RVzzbgtkk9C/EESHy9Yz0+HWgCVRoNyRQsZ 7DW7vE1KhioDLXjDmeu8/0A8u5nFMqv6d1Gt1lb7XzSAYw7uSWXLPEjFBtz9+fBJJLgbYU7G OpTKy6gRr6GaItZze+r04PGWjeyVUuHZuncTO7B2huxcwIk9tFtRX21gVSOOC96HcxSVVA7X N/LLM2EOL7kg4/yDWEhAdLQDChswhmdpHkp5g6ytj9TM8bNlq9I41hl/3cBEeAkxtb/eS5YR 88LBb/2FkcGnhxkGJPNB+4Siku7K8Mk2Y6elnkOctJcDvk29DajYbQnnW4nhfelZuLNupb1O M0912EvzOVI0dIVgR+xtosp66bYTOpX4Xb0fylED9kYGiuEAeoQZaDQ2eICDcHPiaLzh+6cc pkVTB0sXkWHUsPamtPum6/PgWLE9vGI5s+FaqBaqBYDKyvtJfLK4BdZng0Uc3ijycPs3bpbQ bOnK9LD8TYmYaeTenoNILQ7Ut54CCEXkP446skUMKrEo/HabvkykyWqWiIE/UlAYAx9+Ckho TT1d2QsmsAiYYWwjU8igXBecIbC0uRtF/cTfelNGrQwbICUT6kJjcOTpQDaVyIgRSlUMrlNZ XPVEQ6Zq3/aENA8ObhFxE5PLJPizJH6SC89BMKF3zg6SKx0qzQARAQABzSZOaWtvbGF5IEJv cmlzb3YgPG5pay5ib3Jpc292QHN1c2UuY29tPsLBkQQTAQoAOxYhBDuWB8EJLBUZCPjT3SRn XZEnyhfsBQJnK6byAhsDBQsJCAcCAiICBhUKCQgLAgQWAgMBAh4HAheAAAoJECRnXZEnyhfs XbIQAJxuUnelGdXbSbtovBNm+HF3LtT0XnZ0+DoR0DemUGuA1bZAlaOXGr5mvVbTgaoGUQIJ 3Ejx3UBEG7ZSJcfJobB34w1qHEDO0pN9orGIFT9Bic3lqhawD2r85QMcWwjsZH5FhyRx7P2o DTuUClLMO95GuHYQngBF2rHHl8QMJPVKsR18w4IWAhALpEApxa3luyV7pAAqKllfCNt7tmed uKmclf/Sz6qoP75CvEtRbfAOqYgG1Uk9A62C51iAPe35neMre3WGLsdgyMj4/15jPYi+tOUX Tc7AAWgc95LXyPJo8069MOU73htZmgH4OYy+S7f+ArXD7h8lTLT1niff2bCPi6eiAQq6b5CJ Ka4/27IiZo8tm1XjLYmoBmaCovqx5y5Xt2koibIWG3ZGD2I+qRwZ0UohKRH6kKVHGcrmCv0J YO8yIprxgoYmA7gq21BpTqw3D4+8xujn/6LgndLKmGESM1FuY3ymXgj5983eqaxicKpT9iq8 /a1j31tms4azR7+6Dt8H4SagfN6VbJ0luPzobrrNFxUgpjR4ZyQQ++G7oSRdwjfIh1wuCF6/ mDUNcb6/kA0JS9otiC3omfht47yQnvod+MxFk1lTNUu3hePJUwg1vT1te3vO5oln8lkUo9BU knlYpQ7QA2rDEKs+YWqUstr4pDtHzwQ6mo0rqP+zzsFNBGcrpvIBEADGYTFkNVttZkt6e7yA LNkv3Q39zQCt8qe7qkPdlj3CqygVXfw+h7GlcT9fuc4kd7YxFys4/Wd9icj9ZatGMwffONmi LnUotIq2N7+xvc4Xu76wv+QJpiuGEfCDB+VdZOmOzUPlmMkcJc/EDSH4qGogIYRu72uweKEq VfBI43PZIGpGJ7TjS3THX5WVI2YNSmuwqxnQF/iVqDtD2N72ObkBwIf9GnrOgxEyJ/SQq2R0 g7hd6IYk7SOKt1a8ZGCN6hXXKzmM6gHRC8fyWeTqJcK4BKSdX8PzEuYmAJjSfx4w6DoxdK5/ 9sVrNzaVgDHS0ThH/5kNkZ65KNR7K2nk45LT5Crjbg7w5/kKDY6/XiXDx7v/BOR/a+Ryo+lM MffN3XSnAex8cmIhNINl5Z8CAvDLUtItLcbDOv7hdXt6DSyb65CdyY8JwOt6CWno1tdjyDEG 5ANwVPYY878IFkOJLRTJuUd5ltybaSWjKIwjYJfIXuoyzE7OL63856MC/Os8PcLfY7vYY2LB cvKH1qOcs+an86DWX17+dkcKD/YLrpzwvRMur5+kTgVfXcC0TAl39N4YtaCKM/3ugAaVS1Mw MrbyGnGqVMqlCpjnpYREzapSk8XxbO2kYRsZQd8J9ei98OSqgPf8xM7NCULd/xaZLJUydql1 JdSREId2C15jut21aQARAQABwsF2BBgBCgAgFiEEO5YHwQksFRkI+NPdJGddkSfKF+wFAmcr pvICGwwACgkQJGddkSfKF+xuuxAA4F9iQc61wvAOAidktv4Rztn4QKy8TAyGN3M8zYf/A5Zx VcGgX4J4MhRUoPQNrzmVlrrtE2KILHxQZx5eQyPgixPXri42oG5ePEXZoLU5GFRYSPjjTYmP ypyTPN7uoWLfw4TxJqWCGRLsjnkwvyN3R4161Dty4Uhzqp1IkNhl3ifTDYEvbnmHaNvlvvna 7+9jjEBDEFYDMuO/CA8UtoVQXjy5gtOhZZkEsptfwQYc+E9U99yxGofDul7xH41VdXGpIhUj 4wjd3IbgaCiHxxj/M9eM99ybu5asvHyMo3EFPkyWxZsBlUN/riFXGspG4sT0cwOUhG2ZnExv XXhOGKs/y3VGhjZeCDWZ+0ZQHPCL3HUebLxW49wwLxvXU6sLNfYnTJxdqn58Aq4sBXW5Un0Q vfbd9VFV/bKFfvUscYk2UKPi9vgn1hY38IfmsnoS8b0uwDq75IBvup9pYFyNyPf5SutxhFfP JDjakbdjBoYDWVoaPbp5KAQ2VQRiR54lir/inyqGX+dwzPX/F4OHfB5RTiAFLJliCxniKFsM d8eHe88jWjm6/ilx4IlLl9/MdVUGjLpBi18X7ejLz3U2quYD8DBAGzCjy49wJ4Di4qQjblb2 pTXoEyM2L6E604NbDu0VDvHg7EXh1WwmijEu28c/hEB6DwtzslLpBSsJV0s1/jE= In-Reply-To: <20251119-vmscape-bhb-v4-3-1adad4e69ddc@linux.intel.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 11/20/25 08:18, Pawan Gupta wrote: > The BHB clearing sequence has two nested loops that determine the depth of > BHB to be cleared. Introduce an argument to the macro to allow the loop > count (and hence the depth) to be controlled from outside the macro. > > Signed-off-by: Pawan Gupta Reviewed-by: Nikolay Borisov