From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 0ACCF20408A for ; Fri, 15 Aug 2025 07:16:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=193.142.43.55 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755242162; cv=none; b=ttZ4I1JrJAodwf109w450szAo0/Tkb9balJuXSG9IgjvXE7PQ7X8pX6B5BacIe7UKc1X3KSzDtJ2l9CYVopBj7SBFkrtMzaLV3RhW4P7Mzjfom3jCOcULBn+QAQH9MmNYwsyI2sXTxO5ylE/aySArxBWYvHKYVuvp0GY+4/SWnM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1755242162; c=relaxed/simple; bh=RkLDp6zDRxv8BgRNh3MlVTs4P6ItOnLnxvRRn78MzWw=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=bvK+cCinZlRGZwrhuKr5/atUxPRiMt1cbX13S4mBamPHZAeSIESahDY3tRuxc0IB7J5UeesT4hDDQBayIbaTipobp76pEebDENwQJF/lHLFNpXOoJtJG4GAY+Tx8JK8+xqQIcrjrsMxC4TPkGjVNN+SfwBMJnnSMolKZMNWHdKM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de; spf=pass smtp.mailfrom=linutronix.de; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=PQdfvki4; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b=0WUlp69i; arc=none smtp.client-ip=193.142.43.55 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linutronix.de Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linutronix.de Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="PQdfvki4"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="0WUlp69i" Date: Fri, 15 Aug 2025 09:15:56 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1755242157; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=C4UN0KzIR1Tf5MZYHvlC0T5XL7J3huLu6aBx5aMBUKU=; b=PQdfvki4RNOwwd17t5MzersaHCajZsJPqtyUCp/iLPG1ECLTwYlQ15A/hc88LBddW4MKBW RoMcaFOtYdHYAttCxvA130ZtvmJiUPBTQwzKbU0r0M7Fod6/+c8vHZZOAXkwrgzzyuyyd0 +sKlKF2HnHbTzw7/DKeADQ4eah1188hR4YNfcmw5uU6JiQCwMhXvYM5dGfQtOUk2UXbdZb ERfWz5dIJPdYdF7iOUlo8mDkSnSxTgHWSx0dEaWbYmM59JpXlA9BEMeEdipCf6M0QTUcRR Hxaf/+kggP5Z6V5tTosa3P5VIU9nuotF4vnH6Tf1lCl37IxkFCcjcnsWshstEA== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1755242157; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=C4UN0KzIR1Tf5MZYHvlC0T5XL7J3huLu6aBx5aMBUKU=; b=0WUlp69ipHyEt5YlVdD0vzcttdVVsQFAtDVw6l1hY/vkKCfo5Wx1n3KPM7fIAb8z2jlo6W XsoA4zR0Nh0OuNDw== From: "Ahmed S. Darwish" To: Nikunj A Dadhania Cc: x86-cpuid@lists.linux.dev, bp@alien8.de, thomas.lendacky@amd.com, santosh.shukla@amd.com Subject: Re: [PATCH] db/leaf_8000000a: Add Page modification logging Message-ID: References: <20250811125236.2606331-1-nikunj@amd.com> Precedence: bulk X-Mailing-List: x86-cpuid@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250811125236.2606331-1-nikunj@amd.com> Hi, On Mon, 11 Aug 2025, Nikunj A Dadhania wrote: > > Page modification logging(PML) is hardware feature designed to track > guest modified memory pages. PML enables the hypervisor to identify > which pages in a guest's memory have been changed since the last > checkpoint or during live migration. > > Signed-off-by: Nikunj A Dadhania > --- > db/xml/leaf_8000000a.xml | 5 +++++ > 1 file changed, 5 insertions(+) > > diff --git a/db/xml/leaf_8000000a.xml b/db/xml/leaf_8000000a.xml > index 7f73318..433c4b1 100644 > --- a/db/xml/leaf_8000000a.xml > +++ b/db/xml/leaf_8000000a.xml > @@ -14,6 +14,11 @@ > > > > + > + > + > + > + > Thanks a lot for the patch. feature="true" means that the Linux kernel will have an X86_FEATURE_PML flag at some point. I've quickly searched LKML, and I didn't find any draft patches for such a flag. If that feature flag is not planned, there's no need to send a v2. I'll just set feature="false" before merging to tip. Thanks! -- Ahmed S. Darwish Linutronix GmbH