From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 A3ACB14A4C7 for ; Tue, 17 Sep 2024 08:07:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726560467; cv=none; b=nx3IMHXbvx4f5DSXpj1ovAcm+soinMBGIZtRRoqIXpjFVomnaOXkyjV6ejJSW0nMSFKKQLPaboCcmWy802NU05GwHLWQN0RxFb28XRWBUGbtkxeO7Tgmj2pqK41wKOcHQsQWZvSzI7uTVy85VY8uSRi0A1d6ETW4A77UuZ4o9NY= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1726560467; c=relaxed/simple; bh=xqpPE995/KqLP3HYxsfUjOOnMYPaKB2tK6ZAGsqFEkg=; h=Date:To:From:Subject:Message-Id; b=q5tzS41p3nKpbI4bv808vKoGRhxbnuZGXpOsQG8uimHFP/R9ZTWQUWBk9cNr/1IYFmvX9YAmbvdyx7+tY0R1VaaaXLqkUpZj6bimCN1TAH6bSD+cMZYlnbI3TMfyrBAsQNhr6LpjDMC70EACIaHt5GA4yD0uN9tqxwfnch0t4fg= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=ke5e3VDs; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="ke5e3VDs" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CD075C4CEC6; Tue, 17 Sep 2024 08:07:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1726560467; bh=xqpPE995/KqLP3HYxsfUjOOnMYPaKB2tK6ZAGsqFEkg=; h=Date:To:From:Subject:From; b=ke5e3VDsNcuocXYwdGPgbVn9/Chj1y1j6eRDrML3dhRmRIwnviNSLHHr1CneJ+RlD VgVh5D7Bdb+ZVyL2bFHgsZGtuhXmheg1X+t22QDxRyal9E1DRe4y91ZqzINKQViyVI FmhfOPRUUccibl6d/PKcxwvfz+7uCSB7SW5GNcHY= Date: Tue, 17 Sep 2024 01:07:44 -0700 To: mm-commits@vger.kernel.org,ziy@nvidia.com,willy@infradead.org,will@kernel.org,tglx@linutronix.de,svens@linux.ibm.com,seanjc@google.com,schnelle@linux.ibm.com,ryan.roberts@arm.com,pbonzini@redhat.com,mingo@redhat.com,jgg@nvidia.com,hca@linux.ibm.com,gshan@redhat.com,gor@linux.ibm.com,gerald.schaefer@linux.ibm.com,david@redhat.com,dave.hansen@linux.intel.com,catalin.marinas@arm.com,bp@alien8.de,borntraeger@linux.ibm.com,aneesh.kumar@linux.ibm.com,alex.williamson@redhat.com,agordeev@linux.ibm.com,peterx@redhat.com,akpm@linux-foundation.org From: Andrew Morton Subject: [merged mm-stable] mm-gup-detect-huge-pfnmap-entries-in-gup-fast.patch removed from -mm tree Message-Id: <20240917080746.CD075C4CEC6@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The quilt patch titled Subject: mm/gup: detect huge pfnmap entries in gup-fast has been removed from the -mm tree. Its filename was mm-gup-detect-huge-pfnmap-entries-in-gup-fast.patch This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Peter Xu Subject: mm/gup: detect huge pfnmap entries in gup-fast Date: Mon, 26 Aug 2024 16:43:39 -0400 Since gup-fast doesn't have the vma reference, teach it to detect such huge pfnmaps by checking the special bit for pmd/pud too, just like ptes. Link: https://lkml.kernel.org/r/20240826204353.2228736-6-peterx@redhat.com Signed-off-by: Peter Xu Acked-by: David Hildenbrand Reviewed-by: Jason Gunthorpe Cc: Alexander Gordeev Cc: Alex Williamson Cc: Aneesh Kumar K.V Cc: Borislav Petkov Cc: Catalin Marinas Cc: Christian Borntraeger Cc: Dave Hansen Cc: Gavin Shan Cc: Gerald Schaefer Cc: Heiko Carstens Cc: Ingo Molnar Cc: Matthew Wilcox Cc: Niklas Schnelle Cc: Paolo Bonzini Cc: Ryan Roberts Cc: Sean Christopherson Cc: Sven Schnelle Cc: Thomas Gleixner Cc: Vasily Gorbik Cc: Will Deacon Cc: Zi Yan Signed-off-by: Andrew Morton --- mm/gup.c | 6 ++++++ 1 file changed, 6 insertions(+) --- a/mm/gup.c~mm-gup-detect-huge-pfnmap-entries-in-gup-fast +++ a/mm/gup.c @@ -3038,6 +3038,9 @@ static int gup_fast_pmd_leaf(pmd_t orig, if (!pmd_access_permitted(orig, flags & FOLL_WRITE)) return 0; + if (pmd_special(orig)) + return 0; + if (pmd_devmap(orig)) { if (unlikely(flags & FOLL_LONGTERM)) return 0; @@ -3082,6 +3085,9 @@ static int gup_fast_pud_leaf(pud_t orig, if (!pud_access_permitted(orig, flags & FOLL_WRITE)) return 0; + if (pud_special(orig)) + return 0; + if (pud_devmap(orig)) { if (unlikely(flags & FOLL_LONGTERM)) return 0; _ Patches currently in -mm which might be from peterx@redhat.com are