From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 67C0D30E84B; Sat, 23 May 2026 10:37:43 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779532665; cv=none; b=Ii9ZmtgWfzaH3k0DNUMQBPFpLPKk7DOCCJrHFaEfjyHUTXNFMqHvy98Ca+BxUpkAv4LaxJssQkjfRttLJXKlXlnq4GZMWz2RJRsORVWQAsZDbgPaN6UAI4BWqm5Yw70jbBcqtCUQOFntrwIGMz2FemKVqAng0i9R39dC9kawljQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1779532665; c=relaxed/simple; bh=g3+TkRRALb7IhqgZxnCIVq3fxis7ltyRAflGA13FOwk=; h=Date:From:To:Cc:Subject:Message-ID:References:MIME-Version: Content-Type:Content-Disposition:In-Reply-To; b=KVlUGqVRfVMwGdIsMSpYSjIpP0Yxdk+yusf54JaKM2WdQW32RGcPAbWBWicQT35PgnZ79u9XUa8jtdHcWP9pgiH5XTv4ygtDhsz06saTJlvmCWBL623UISJkccaeR+gbLh0jEbBk6G2Y4posi+ZjfBSG7wUffNXNvM37aaQd3uw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=h0DTuPMg; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="h0DTuPMg" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 528391F000E9; Sat, 23 May 2026 10:37:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1779532663; bh=snoJupCrLvennL6uXOgnTKfm9IRgKoBXu8jeUzQitF4=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=h0DTuPMgVw6ksHlRqsKdtZnAHmn75iWnceRWOcNotrmKw4hDEFmI2/KnVEeRPdQ6c KcKkk6IvsHktG1+/3vB3xCzYnAD7ZWefqvPi+fdJQwylvxcvYJVzyhKNEPTnNqSxcc uvTNe4fRermhbk1PE1RFRFEsDZi7BhO2RJS0gxhvKtaUo5Mu/ePY5INY860CkxoD1I TBz6tBohMupfZFlw2TiQ5cWvD2hLGUrdc/2aj7PfKm3glTII1Mgq3X0jdw+fKnfHF9 NwXKA8cPubvWH38wPXJmN4IBhYFriKrmq+PWseVlMhu7GWnwTdbqpjMpx/opGXhcYB xir9qwzGvHf1Q== Date: Sat, 23 May 2026 13:37:32 +0300 From: Mike Rapoport To: Kiryl Shutsemau Cc: akpm@linux-foundation.org, peterx@redhat.com, david@kernel.org, ljs@kernel.org, surenb@google.com, vbabka@kernel.org, Liam.Howlett@oracle.com, ziy@nvidia.com, corbet@lwn.net, skhan@linuxfoundation.org, seanjc@google.com, pbonzini@redhat.com, jthoughton@google.com, aarcange@redhat.com, sj@kernel.org, usama.arif@linux.dev, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org, kvm@vger.kernel.org, kernel-team@meta.com, linux-man@vger.kernel.org, alx@kernel.org, "Kiryl Shutsemau (Meta)" Subject: Re: [PATCH v3 15/16] userfaultfd.2: Add read-write protect mode Message-ID: References: <20260522133857.552279-1-kirill@shutemov.name> <20260522133857.552279-16-kirill@shutemov.name> Precedence: bulk X-Mailing-List: linux-man@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260522133857.552279-16-kirill@shutemov.name> On Fri, May 22, 2026 at 02:38:56PM +0100, Kiryl Shutsemau wrote: > From: "Kiryl Shutsemau (Meta)" > > Read-write protect mode (UFFDIO_REGISTER_MODE_RWP) is supported starting > from Linux 7.2. It traps every access -- read or write -- to a present > page within a registered range. The matching UAPI consists of: > > - UFFDIO_REGISTER_MODE_RWP registration-mode bit > - UFFD_FEATURE_RWP capability bit > - UFFD_FEATURE_RWP_ASYNC async (in-kernel) fault resolution > - UFFDIO_RWPROTECT install / remove RWP on a range > - UFFDIO_SET_MODE runtime sync/async toggle > - UFFD_PAGEFAULT_FLAG_RWP new pagefault.flags bit > > Document the new registration-mode entry, the "Userfaultfd read-write > protect mode" section, the new pagefault flag, and a VERSIONS line. > > Signed-off-by: Kiryl Shutsemau > --- > man2/userfaultfd.2 | 147 ++++++++++++++++++++++++++++++++++++++++++++- > 1 file changed, 146 insertions(+), 1 deletion(-) This doesn't apply to the current man-pages tree https://git.kernel.org/pub/scm/docs/man-pages/man-pages.git and reading raw groff hurts eyes too much. What linux-man tree did you use to generate those? -- Sincerely yours, Mike.