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 AF9AF77117 for ; Tue, 27 Aug 2024 23:52:33 +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=1724802753; cv=none; b=CIzhvpeq5z0Vk+piSIKgxiIW3IrpJNlHN5HBKPJwNlPyyMjYwUXXZaskNgMRBUkk7uReqkS5dZKs/Juq5FmcDRFm+N1pp1oKHTQpqzl6sUu4HvXcec4PP6faaLVpXiqI1kRMPjPNxZYGexWowKwGGxUHvb/mqyGEKMOkRgcu5dQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1724802753; c=relaxed/simple; bh=eJ1wIphM45UwLImFIms2rOl0gBhWwUsJ0FTZ9i3DFpA=; h=Date:To:From:Subject:Message-Id; b=QOmJN/vF777mvwdVUXgB4HFMbRj3h61HQ86YxgiJw6c86RVAucL0VGy3xKoqIqDBS2kWeFH7bheQE+uGZj/5VNXQ5ounPLJaadTrzoY9tVZKmUg9JMCz6SDSDMv0DiivHv0ut89n+hSTg7B41KiLcDLHT7bMszz0n6uhNmcDsa0= 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=KsCdV18Y; 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="KsCdV18Y" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 451F2C32782; Tue, 27 Aug 2024 23:52:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1724802753; bh=eJ1wIphM45UwLImFIms2rOl0gBhWwUsJ0FTZ9i3DFpA=; h=Date:To:From:Subject:From; b=KsCdV18YSwGPspufZkS7935tQXCF6vnJToqmqRW7x+CARYVWNfZNfEdqjo7H643e3 8UD3U15oR+gAAb3UIzaCyVObWn3DbG/1SC/P6+dEwdL92hqxZIWYLQBu52aDoUFDvr D3oriMXgSRW/XvyQAM8L3YR+xfLH4Q8up73bBhrE= Date: Tue, 27 Aug 2024 16:52:32 -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: + acrn-use-the-new-follow_pfnmap-api.patch added to mm-unstable branch Message-Id: <20240827235233.451F2C32782@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The patch titled Subject: acrn: use the new follow_pfnmap API has been added to the -mm mm-unstable branch. Its filename is acrn-use-the-new-follow_pfnmap-api.patch This patch will shortly appear at https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/acrn-use-the-new-follow_pfnmap-api.patch This patch will later appear in the mm-unstable branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm Before you just go and hit "reply", please: a) Consider who else should be cc'ed b) Prefer to cc a suitable mailing list as well c) Ideally: find the original patch on the mailing list and do a reply-to-all to that, adding suitable additional cc's *** Remember to use Documentation/process/submit-checklist.rst when testing your code *** The -mm tree is included into linux-next via the mm-everything branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm and is updated there every 2-3 working days ------------------------------------------------------ From: Peter Xu Subject: acrn: use the new follow_pfnmap API Date: Mon, 26 Aug 2024 16:43:48 -0400 Use the new API that can understand huge pfn mappings. Link: https://lkml.kernel.org/r/20240826204353.2228736-15-peterx@redhat.com Signed-off-by: Peter Xu Cc: Alexander Gordeev Cc: Alex Williamson Cc: Aneesh Kumar K.V Cc: Borislav Petkov Cc: Catalin Marinas Cc: Christian Borntraeger Cc: Dave Hansen Cc: David Hildenbrand Cc: Gavin Shan Cc: Gerald Schaefer Cc: Heiko Carstens Cc: Ingo Molnar Cc: Jason Gunthorpe 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 --- drivers/virt/acrn/mm.c | 16 +++++++++------- 1 file changed, 9 insertions(+), 7 deletions(-) --- a/drivers/virt/acrn/mm.c~acrn-use-the-new-follow_pfnmap-api +++ a/drivers/virt/acrn/mm.c @@ -177,9 +177,7 @@ int acrn_vm_ram_map(struct acrn_vm *vm, vma = vma_lookup(current->mm, memmap->vma_base); if (vma && ((vma->vm_flags & VM_PFNMAP) != 0)) { unsigned long start_pfn, cur_pfn; - spinlock_t *ptl; bool writable; - pte_t *ptep; if ((memmap->vma_base + memmap->len) > vma->vm_end) { mmap_read_unlock(current->mm); @@ -187,16 +185,20 @@ int acrn_vm_ram_map(struct acrn_vm *vm, } for (i = 0; i < nr_pages; i++) { - ret = follow_pte(vma, memmap->vma_base + i * PAGE_SIZE, - &ptep, &ptl); + struct follow_pfnmap_args args = { + .vma = vma, + .address = memmap->vma_base + i * PAGE_SIZE, + }; + + ret = follow_pfnmap_start(&args); if (ret) break; - cur_pfn = pte_pfn(ptep_get(ptep)); + cur_pfn = args.pfn; if (i == 0) start_pfn = cur_pfn; - writable = !!pte_write(ptep_get(ptep)); - pte_unmap_unlock(ptep, ptl); + writable = args.writable; + follow_pfnmap_end(&args); /* Disallow write access if the PTE is not writable. */ if (!writable && _ Patches currently in -mm which might be from peterx@redhat.com are mm-dax-dump-start-address-in-fault-handler.patch mm-mprotect-push-mmu-notifier-to-puds.patch mm-powerpc-add-missing-pud-helpers.patch mm-x86-make-pud_leaf-only-care-about-pse-bit.patch mm-x86-implement-arch_check_zapped_pud.patch mm-x86-add-missing-pud-helpers.patch mm-mprotect-fix-dax-pud-handlings.patch mm-introduce-arch_supports_huge_pfnmap-and-special-bits-to-pmd-pud.patch mm-drop-is_huge_zero_pud.patch mm-mark-special-bits-for-huge-pfn-mappings-when-inject.patch mm-allow-thp-orders-for-pfnmaps.patch mm-gup-detect-huge-pfnmap-entries-in-gup-fast.patch mm-pagewalk-check-pfnmap-for-folio_walk_start.patch mm-fork-accept-huge-pfnmap-entries.patch mm-always-define-pxx_pgprot.patch mm-new-follow_pfnmap-api.patch kvm-use-follow_pfnmap-api.patch s390-pci_mmio-use-follow_pfnmap-api.patch mm-x86-pat-use-the-new-follow_pfnmap-api.patch vfio-use-the-new-follow_pfnmap-api.patch acrn-use-the-new-follow_pfnmap-api.patch mm-access_process_vm-use-the-new-follow_pfnmap-api.patch mm-remove-follow_pte.patch mm-x86-support-large-pfn-mappings.patch mm-arm64-support-large-pfn-mappings.patch