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From: kernel test robot <lkp@intel.com>
To: Peter Xu <peterx@redhat.com>,
	linux-mm@kvack.org, linux-kernel@vger.kernel.org
Cc: clang-built-linux@googlegroups.com, kbuild-all@lists.01.org,
	Andrew Morton <akpm@linux-foundation.org>,
	Linux Memory Management List <linux-mm@kvack.org>,
	Mike Kravetz <mike.kravetz@oracle.com>,
	Axel Rasmussen <axelrasmussen@google.com>,
	Miaohe Lin <linmiaohe@huawei.com>,
	"Kirill A . Shutemov" <kirill@shutemov.name>,
	Hugh Dickins <hughd@google.com>, Jason Gunthorpe <jgg@ziepe.ca>
Subject: Re: [PATCH v4 15/26] mm/hugetlb: Drop __unmap_hugepage_range definition from hugetlb.h
Date: Thu, 15 Jul 2021 16:10:05 +0800	[thread overview]
Message-ID: <202107151615.ZmxNMsXh-lkp@intel.com> (raw)
In-Reply-To: <20210714222450.48840-1-peterx@redhat.com>

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Hi Peter,

Thank you for the patch! Perhaps something to improve:

[auto build test WARNING on linus/master]
[also build test WARNING on v5.14-rc1 next-20210715]
[cannot apply to hnaz-linux-mm/master asm-generic/master linux/master]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]

url:    https://github.com/0day-ci/linux/commits/Peter-Xu/userfaultfd-wp-Support-shmem-and-hugetlbfs/20210715-062718
base:   https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git 8096acd7442e613fad0354fc8dfdb2003cceea0b
config: powerpc-randconfig-r012-20210714 (attached as .config)
compiler: clang version 13.0.0 (https://github.com/llvm/llvm-project 0e49c54a8cbd3e779e5526a5888c683c01cc3c50)
reproduce (this is a W=1 build):
        wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
        chmod +x ~/bin/make.cross
        # install powerpc cross compiling tool for clang build
        # apt-get install binutils-powerpc-linux-gnu
        # https://github.com/0day-ci/linux/commit/f8dd355edbfe948f84c8aaa10a5173656aa2778c
        git remote add linux-review https://github.com/0day-ci/linux
        git fetch --no-tags linux-review Peter-Xu/userfaultfd-wp-Support-shmem-and-hugetlbfs/20210715-062718
        git checkout f8dd355edbfe948f84c8aaa10a5173656aa2778c
        # save the attached .config to linux build tree
        COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc 

If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>

All warnings (new ones prefixed by >>):

   __do_insb
   ^
   arch/powerpc/include/asm/io.h:556:56: note: expanded from macro '__do_insb'
   #define __do_insb(p, b, n)      readsb((PCI_IO_ADDR)_IO_BASE+(p), (b), (n))
                                          ~~~~~~~~~~~~~~~~~~~~~^
   In file included from mm/hugetlb.c:11:
   In file included from include/linux/highmem.h:10:
   In file included from include/linux/hardirq.h:11:
   In file included from arch/powerpc/include/asm/hardirq.h:6:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:13:
   In file included from arch/powerpc/include/asm/io.h:619:
   arch/powerpc/include/asm/io-defs.h:45:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
   DEF_PCI_AC_NORET(insw, (unsigned long p, void *b, unsigned long c),
   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET'
                   __do_##name al;                                 \
                   ^~~~~~~~~~~~~~
   <scratch space>:126:1: note: expanded from here
   __do_insw
   ^
   arch/powerpc/include/asm/io.h:557:56: note: expanded from macro '__do_insw'
   #define __do_insw(p, b, n)      readsw((PCI_IO_ADDR)_IO_BASE+(p), (b), (n))
                                          ~~~~~~~~~~~~~~~~~~~~~^
   In file included from mm/hugetlb.c:11:
   In file included from include/linux/highmem.h:10:
   In file included from include/linux/hardirq.h:11:
   In file included from arch/powerpc/include/asm/hardirq.h:6:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:13:
   In file included from arch/powerpc/include/asm/io.h:619:
   arch/powerpc/include/asm/io-defs.h:47:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
   DEF_PCI_AC_NORET(insl, (unsigned long p, void *b, unsigned long c),
   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET'
                   __do_##name al;                                 \
                   ^~~~~~~~~~~~~~
   <scratch space>:128:1: note: expanded from here
   __do_insl
   ^
   arch/powerpc/include/asm/io.h:558:56: note: expanded from macro '__do_insl'
   #define __do_insl(p, b, n)      readsl((PCI_IO_ADDR)_IO_BASE+(p), (b), (n))
                                          ~~~~~~~~~~~~~~~~~~~~~^
   In file included from mm/hugetlb.c:11:
   In file included from include/linux/highmem.h:10:
   In file included from include/linux/hardirq.h:11:
   In file included from arch/powerpc/include/asm/hardirq.h:6:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:13:
   In file included from arch/powerpc/include/asm/io.h:619:
   arch/powerpc/include/asm/io-defs.h:49:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
   DEF_PCI_AC_NORET(outsb, (unsigned long p, const void *b, unsigned long c),
   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET'
                   __do_##name al;                                 \
                   ^~~~~~~~~~~~~~
   <scratch space>:130:1: note: expanded from here
   __do_outsb
   ^
   arch/powerpc/include/asm/io.h:559:58: note: expanded from macro '__do_outsb'
   #define __do_outsb(p, b, n)     writesb((PCI_IO_ADDR)_IO_BASE+(p),(b),(n))
                                           ~~~~~~~~~~~~~~~~~~~~~^
   In file included from mm/hugetlb.c:11:
   In file included from include/linux/highmem.h:10:
   In file included from include/linux/hardirq.h:11:
   In file included from arch/powerpc/include/asm/hardirq.h:6:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:13:
   In file included from arch/powerpc/include/asm/io.h:619:
   arch/powerpc/include/asm/io-defs.h:51:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
   DEF_PCI_AC_NORET(outsw, (unsigned long p, const void *b, unsigned long c),
   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET'
                   __do_##name al;                                 \
                   ^~~~~~~~~~~~~~
   <scratch space>:132:1: note: expanded from here
   __do_outsw
   ^
   arch/powerpc/include/asm/io.h:560:58: note: expanded from macro '__do_outsw'
   #define __do_outsw(p, b, n)     writesw((PCI_IO_ADDR)_IO_BASE+(p),(b),(n))
                                           ~~~~~~~~~~~~~~~~~~~~~^
   In file included from mm/hugetlb.c:11:
   In file included from include/linux/highmem.h:10:
   In file included from include/linux/hardirq.h:11:
   In file included from arch/powerpc/include/asm/hardirq.h:6:
   In file included from include/linux/irq.h:20:
   In file included from include/linux/io.h:13:
   In file included from arch/powerpc/include/asm/io.h:619:
   arch/powerpc/include/asm/io-defs.h:53:1: warning: performing pointer arithmetic on a null pointer has undefined behavior [-Wnull-pointer-arithmetic]
   DEF_PCI_AC_NORET(outsl, (unsigned long p, const void *b, unsigned long c),
   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
   arch/powerpc/include/asm/io.h:616:3: note: expanded from macro 'DEF_PCI_AC_NORET'
                   __do_##name al;                                 \
                   ^~~~~~~~~~~~~~
   <scratch space>:134:1: note: expanded from here
   __do_outsl
   ^
   arch/powerpc/include/asm/io.h:561:58: note: expanded from macro '__do_outsl'
   #define __do_outsl(p, b, n)     writesl((PCI_IO_ADDR)_IO_BASE+(p),(b),(n))
                                           ~~~~~~~~~~~~~~~~~~~~~^
>> mm/hugetlb.c:4334:6: warning: no previous prototype for function '__unmap_hugepage_range' [-Wmissing-prototypes]
   void __unmap_hugepage_range(struct mmu_gather *tlb, struct vm_area_struct *vma,
        ^
   mm/hugetlb.c:4334:1: note: declare 'static' if the function is not intended to be used outside of this translation unit
   void __unmap_hugepage_range(struct mmu_gather *tlb, struct vm_area_struct *vma,
   ^
   static 
   7 warnings generated.


vim +/__unmap_hugepage_range +4334 mm/hugetlb.c

63551ae0feaaa2 David Gibson       2005-06-21  4333  
24669e58477e27 Aneesh Kumar K.V   2012-07-31 @4334  void __unmap_hugepage_range(struct mmu_gather *tlb, struct vm_area_struct *vma,
24669e58477e27 Aneesh Kumar K.V   2012-07-31  4335  			    unsigned long start, unsigned long end,
24669e58477e27 Aneesh Kumar K.V   2012-07-31  4336  			    struct page *ref_page)
63551ae0feaaa2 David Gibson       2005-06-21  4337  {
63551ae0feaaa2 David Gibson       2005-06-21  4338  	struct mm_struct *mm = vma->vm_mm;
63551ae0feaaa2 David Gibson       2005-06-21  4339  	unsigned long address;
c7546f8f03f5a4 David Gibson       2005-08-05  4340  	pte_t *ptep;
63551ae0feaaa2 David Gibson       2005-06-21  4341  	pte_t pte;
cb900f41215447 Kirill A. Shutemov 2013-11-14  4342  	spinlock_t *ptl;
63551ae0feaaa2 David Gibson       2005-06-21  4343  	struct page *page;
a5516438959d90 Andi Kleen         2008-07-23  4344  	struct hstate *h = hstate_vma(vma);
a5516438959d90 Andi Kleen         2008-07-23  4345  	unsigned long sz = huge_page_size(h);
ac46d4f3c43241 Jérôme Glisse      2018-12-28  4346  	struct mmu_notifier_range range;
a5516438959d90 Andi Kleen         2008-07-23  4347  
63551ae0feaaa2 David Gibson       2005-06-21  4348  	WARN_ON(!is_vm_hugetlb_page(vma));
a5516438959d90 Andi Kleen         2008-07-23  4349  	BUG_ON(start & ~huge_page_mask(h));
a5516438959d90 Andi Kleen         2008-07-23  4350  	BUG_ON(end & ~huge_page_mask(h));
63551ae0feaaa2 David Gibson       2005-06-21  4351  
07e326610e5634 Aneesh Kumar K.V   2016-12-12  4352  	/*
07e326610e5634 Aneesh Kumar K.V   2016-12-12  4353  	 * This is a hugetlb vma, all the pte entries should point
07e326610e5634 Aneesh Kumar K.V   2016-12-12  4354  	 * to huge page.
07e326610e5634 Aneesh Kumar K.V   2016-12-12  4355  	 */
ed6a79352cad00 Peter Zijlstra     2018-08-31  4356  	tlb_change_page_size(tlb, sz);
24669e58477e27 Aneesh Kumar K.V   2012-07-31  4357  	tlb_start_vma(tlb, vma);
dff11abe280b47 Mike Kravetz       2018-10-05  4358  
dff11abe280b47 Mike Kravetz       2018-10-05  4359  	/*
dff11abe280b47 Mike Kravetz       2018-10-05  4360  	 * If sharing possible, alert mmu notifiers of worst case.
dff11abe280b47 Mike Kravetz       2018-10-05  4361  	 */
6f4f13e8d9e27c Jérôme Glisse      2019-05-13  4362  	mmu_notifier_range_init(&range, MMU_NOTIFY_UNMAP, 0, vma, mm, start,
6f4f13e8d9e27c Jérôme Glisse      2019-05-13  4363  				end);
ac46d4f3c43241 Jérôme Glisse      2018-12-28  4364  	adjust_range_if_pmd_sharing_possible(vma, &range.start, &range.end);
ac46d4f3c43241 Jérôme Glisse      2018-12-28  4365  	mmu_notifier_invalidate_range_start(&range);
569f48b85813f0 Hillf Danton       2014-12-10  4366  	address = start;
569f48b85813f0 Hillf Danton       2014-12-10  4367  	for (; address < end; address += sz) {
7868a2087ec13e Punit Agrawal      2017-07-06  4368  		ptep = huge_pte_offset(mm, address, sz);
c7546f8f03f5a4 David Gibson       2005-08-05  4369  		if (!ptep)
c7546f8f03f5a4 David Gibson       2005-08-05  4370  			continue;
c7546f8f03f5a4 David Gibson       2005-08-05  4371  
cb900f41215447 Kirill A. Shutemov 2013-11-14  4372  		ptl = huge_pte_lock(h, mm, ptep);
34ae204f18519f Mike Kravetz       2020-08-11  4373  		if (huge_pmd_unshare(mm, vma, &address, ptep)) {
31d49da5ad0172 Aneesh Kumar K.V   2016-07-26  4374  			spin_unlock(ptl);
dff11abe280b47 Mike Kravetz       2018-10-05  4375  			/*
dff11abe280b47 Mike Kravetz       2018-10-05  4376  			 * We just unmapped a page of PMDs by clearing a PUD.
dff11abe280b47 Mike Kravetz       2018-10-05  4377  			 * The caller's TLB flush range should cover this area.
dff11abe280b47 Mike Kravetz       2018-10-05  4378  			 */
31d49da5ad0172 Aneesh Kumar K.V   2016-07-26  4379  			continue;
31d49da5ad0172 Aneesh Kumar K.V   2016-07-26  4380  		}
39dde65c9940c9 Kenneth W Chen     2006-12-06  4381  
6629326b89b6e6 Hillf Danton       2012-03-23  4382  		pte = huge_ptep_get(ptep);
31d49da5ad0172 Aneesh Kumar K.V   2016-07-26  4383  		if (huge_pte_none(pte)) {
31d49da5ad0172 Aneesh Kumar K.V   2016-07-26  4384  			spin_unlock(ptl);
31d49da5ad0172 Aneesh Kumar K.V   2016-07-26  4385  			continue;
31d49da5ad0172 Aneesh Kumar K.V   2016-07-26  4386  		}
6629326b89b6e6 Hillf Danton       2012-03-23  4387  
6629326b89b6e6 Hillf Danton       2012-03-23  4388  		/*
9fbc1f635fd0bd Naoya Horiguchi    2015-02-11  4389  		 * Migrating hugepage or HWPoisoned hugepage is already
9fbc1f635fd0bd Naoya Horiguchi    2015-02-11  4390  		 * unmapped and its refcount is dropped, so just clear pte here.
6629326b89b6e6 Hillf Danton       2012-03-23  4391  		 */
9fbc1f635fd0bd Naoya Horiguchi    2015-02-11  4392  		if (unlikely(!pte_present(pte))) {
9386fac34c7cbe Punit Agrawal      2017-07-06  4393  			huge_pte_clear(mm, address, ptep, sz);
31d49da5ad0172 Aneesh Kumar K.V   2016-07-26  4394  			spin_unlock(ptl);
31d49da5ad0172 Aneesh Kumar K.V   2016-07-26  4395  			continue;
8c4894c6bc790d Naoya Horiguchi    2012-12-12  4396  		}
6629326b89b6e6 Hillf Danton       2012-03-23  4397  
6629326b89b6e6 Hillf Danton       2012-03-23  4398  		page = pte_page(pte);
04f2cbe35699d2 Mel Gorman         2008-07-23  4399  		/*
04f2cbe35699d2 Mel Gorman         2008-07-23  4400  		 * If a reference page is supplied, it is because a specific
04f2cbe35699d2 Mel Gorman         2008-07-23  4401  		 * page is being unmapped, not a range. Ensure the page we
04f2cbe35699d2 Mel Gorman         2008-07-23  4402  		 * are about to unmap is the actual page of interest.
04f2cbe35699d2 Mel Gorman         2008-07-23  4403  		 */
04f2cbe35699d2 Mel Gorman         2008-07-23  4404  		if (ref_page) {
31d49da5ad0172 Aneesh Kumar K.V   2016-07-26  4405  			if (page != ref_page) {
31d49da5ad0172 Aneesh Kumar K.V   2016-07-26  4406  				spin_unlock(ptl);
31d49da5ad0172 Aneesh Kumar K.V   2016-07-26  4407  				continue;
31d49da5ad0172 Aneesh Kumar K.V   2016-07-26  4408  			}
04f2cbe35699d2 Mel Gorman         2008-07-23  4409  			/*
04f2cbe35699d2 Mel Gorman         2008-07-23  4410  			 * Mark the VMA as having unmapped its page so that
04f2cbe35699d2 Mel Gorman         2008-07-23  4411  			 * future faults in this VMA will fail rather than
04f2cbe35699d2 Mel Gorman         2008-07-23  4412  			 * looking like data was lost
04f2cbe35699d2 Mel Gorman         2008-07-23  4413  			 */
04f2cbe35699d2 Mel Gorman         2008-07-23  4414  			set_vma_resv_flags(vma, HPAGE_RESV_UNMAPPED);
04f2cbe35699d2 Mel Gorman         2008-07-23  4415  		}
04f2cbe35699d2 Mel Gorman         2008-07-23  4416  
c7546f8f03f5a4 David Gibson       2005-08-05  4417  		pte = huge_ptep_get_and_clear(mm, address, ptep);
b528e4b6405b9f Aneesh Kumar K.V   2016-12-12  4418  		tlb_remove_huge_tlb_entry(h, tlb, ptep, address);
106c992a5ebef2 Gerald Schaefer    2013-04-29  4419  		if (huge_pte_dirty(pte))
6649a3863232eb Ken Chen           2007-02-08  4420  			set_page_dirty(page);
9e81130b7ce230 Hillf Danton       2012-03-21  4421  
5d317b2b653659 Naoya Horiguchi    2015-11-05  4422  		hugetlb_count_sub(pages_per_huge_page(h), mm);
d281ee61451835 Kirill A. Shutemov 2016-01-15  4423  		page_remove_rmap(page, true);
31d49da5ad0172 Aneesh Kumar K.V   2016-07-26  4424  
cb900f41215447 Kirill A. Shutemov 2013-11-14  4425  		spin_unlock(ptl);
e77b0852b551ff Aneesh Kumar K.V   2016-07-26  4426  		tlb_remove_page_size(tlb, page, huge_page_size(h));
24669e58477e27 Aneesh Kumar K.V   2012-07-31  4427  		/*
31d49da5ad0172 Aneesh Kumar K.V   2016-07-26  4428  		 * Bail out after unmapping reference page if supplied
24669e58477e27 Aneesh Kumar K.V   2012-07-31  4429  		 */
31d49da5ad0172 Aneesh Kumar K.V   2016-07-26  4430  		if (ref_page)
31d49da5ad0172 Aneesh Kumar K.V   2016-07-26  4431  			break;
fe1668ae5bf014 Kenneth W Chen     2006-10-04  4432  	}
ac46d4f3c43241 Jérôme Glisse      2018-12-28  4433  	mmu_notifier_invalidate_range_end(&range);
24669e58477e27 Aneesh Kumar K.V   2012-07-31  4434  	tlb_end_vma(tlb, vma);
^1da177e4c3f41 Linus Torvalds     2005-04-16  4435  }
63551ae0feaaa2 David Gibson       2005-06-21  4436  

---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org

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  parent reply	other threads:[~2021-07-15  8:10 UTC|newest]

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-07-14 22:20 [PATCH v4 00/26] userfaultfd-wp: Support shmem and hugetlbfs Peter Xu
2021-07-14 22:20 ` [PATCH v4 01/26] mm/shmem: Unconditionally set pte dirty in mfill_atomic_install_pte Peter Xu
2021-07-14 22:20 ` [PATCH v4 02/26] shmem/userfaultfd: Take care of UFFDIO_COPY_MODE_WP Peter Xu
2021-07-14 22:20 ` [PATCH v4 03/26] mm: Clear vmf->pte after pte_unmap_same() returns Peter Xu
2021-07-14 22:20 ` [PATCH v4 04/26] mm/userfaultfd: Introduce special pte for unmapped file-backed mem Peter Xu
2021-07-14 22:20 ` [PATCH v4 05/26] mm/swap: Introduce the idea of special swap ptes Peter Xu
2021-07-14 22:20 ` [PATCH v4 06/26] shmem/userfaultfd: Handle uffd-wp special pte in page fault handler Peter Xu
2021-07-15  6:20   ` kernel test robot
2021-07-15 18:50     ` Peter Xu
2021-07-14 22:20 ` [PATCH v4 07/26] mm: Drop first_index/last_index in zap_details Peter Xu
2021-07-14 22:20 ` [PATCH v4 08/26] mm: Introduce zap_details.zap_flags Peter Xu
2021-07-14 22:21 ` [PATCH v4 09/26] mm: Introduce ZAP_FLAG_SKIP_SWAP Peter Xu
2021-07-14 22:21 ` [PATCH v4 10/26] shmem/userfaultfd: Persist uffd-wp bit across zapping for file-backed Peter Xu
2021-07-14 22:24 ` [PATCH v4 11/26] shmem/userfaultfd: Allow wr-protect none pte for file-backed mem Peter Xu
2021-07-14 22:24 ` [PATCH v4 12/26] shmem/userfaultfd: Allows file-back mem to be uffd wr-protected on thps Peter Xu
2021-07-14 22:24 ` [PATCH v4 13/26] shmem/userfaultfd: Handle the left-overed special swap ptes Peter Xu
2021-07-14 22:24 ` [PATCH v4 14/26] shmem/userfaultfd: Pass over uffd-wp special swap pte when fork() Peter Xu
2021-07-14 22:24 ` [PATCH v4 15/26] mm/hugetlb: Drop __unmap_hugepage_range definition from hugetlb.h Peter Xu
2021-07-15  5:49   ` kernel test robot
2021-07-15  8:10   ` kernel test robot [this message]
2021-07-15 17:05   ` kernel test robot
2021-07-15 17:05   ` [RFC PATCH] mm/hugetlb: __unmap_hugepage_range() can be static kernel test robot
2021-07-15 18:53     ` Peter Xu
2021-07-14 22:24 ` [PATCH v4 16/26] mm/hugetlb: Introduce huge pte version of uffd-wp helpers Peter Xu
2021-07-14 22:24 ` [PATCH v4 17/26] hugetlb/userfaultfd: Hook page faults for uffd write protection Peter Xu
2021-07-14 22:25 ` [PATCH v4 18/26] hugetlb/userfaultfd: Take care of UFFDIO_COPY_MODE_WP Peter Xu
2021-07-14 22:25 ` [PATCH v4 19/26] hugetlb/userfaultfd: Handle UFFDIO_WRITEPROTECT Peter Xu
2021-07-14 22:25 ` [PATCH v4 20/26] mm/hugetlb: Introduce huge version of special swap pte helpers Peter Xu
2021-07-14 22:25 ` [PATCH v4 21/26] hugetlb/userfaultfd: Handle uffd-wp special pte in hugetlb pf handler Peter Xu
2021-07-14 22:25 ` [PATCH v4 22/26] hugetlb/userfaultfd: Allow wr-protect none ptes Peter Xu
2021-07-14 22:25 ` [PATCH v4 23/26] hugetlb/userfaultfd: Only drop uffd-wp special pte if required Peter Xu
2021-07-14 22:25 ` [PATCH v4 24/26] mm/pagemap: Recognize uffd-wp bit for shmem/hugetlbfs Peter Xu
2021-07-14 22:25 ` [PATCH v4 25/26] mm/userfaultfd: Enable write protection for shmem & hugetlbfs Peter Xu
2021-07-14 22:25 ` [PATCH v4 26/26] userfaultfd/selftests: Enable uffd-wp for shmem/hugetlbfs Peter Xu

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