From: Peter Xu <peterx@redhat.com>
To: linux-kernel@vger.kernel.org, linux-mm@kvack.org
Cc: Mike Rapoport <rppt@linux.vnet.ibm.com>,
peterx@redhat.com, Andrew Morton <akpm@linux-foundation.org>,
Mike Kravetz <mike.kravetz@oracle.com>,
Jerome Glisse <jglisse@redhat.com>,
Miaohe Lin <linmiaohe@huawei.com>,
Nadav Amit <nadav.amit@gmail.com>,
Hugh Dickins <hughd@google.com>,
Matthew Wilcox <willy@infradead.org>,
Jason Gunthorpe <jgg@ziepe.ca>,
"Kirill A . Shutemov" <kirill@shutemov.name>,
Andrea Arcangeli <aarcange@redhat.com>,
Axel Rasmussen <axelrasmussen@google.com>
Subject: [PATCH v3 27/27] userfaultfd/selftests: Enable uffd-wp for shmem/hugetlbfs
Date: Thu, 27 May 2021 16:23:48 -0400 [thread overview]
Message-ID: <20210527202348.32406-1-peterx@redhat.com> (raw)
In-Reply-To: <20210527201927.29586-1-peterx@redhat.com>
After we added support for shmem and hugetlbfs, we can turn uffd-wp test on
always now.
Define HUGETLB_EXPECTED_IOCTLS to avoid using UFFD_API_RANGE_IOCTLS_BASIC,
because UFFD_API_RANGE_IOCTLS_BASIC is normally a superset of capabilities,
while the test may not satisfy them all. E.g., when hugetlb registered without
minor mode, then we need to explicitly remove _UFFDIO_CONTINUE. Same thing to
uffd-wp, as we'll need to explicitly remove _UFFDIO_WRITEPROTECT if not
registered with uffd-wp.
For the long term, we may consider dropping UFFD_API_* macros completely from
uapi/linux/userfaultfd.h header files, because it may cause kernel header
update to easily break userspace.
Signed-off-by: Peter Xu <peterx@redhat.com>
---
tools/testing/selftests/vm/userfaultfd.c | 9 +++++----
1 file changed, 5 insertions(+), 4 deletions(-)
diff --git a/tools/testing/selftests/vm/userfaultfd.c b/tools/testing/selftests/vm/userfaultfd.c
index e363bdaff59d..015f2df8ece4 100644
--- a/tools/testing/selftests/vm/userfaultfd.c
+++ b/tools/testing/selftests/vm/userfaultfd.c
@@ -80,7 +80,7 @@ static int test_type;
static volatile bool test_uffdio_copy_eexist = true;
static volatile bool test_uffdio_zeropage_eexist = true;
/* Whether to test uffd write-protection */
-static bool test_uffdio_wp = false;
+static bool test_uffdio_wp = true;
/* Whether to test uffd minor faults */
static bool test_uffdio_minor = false;
@@ -320,6 +320,9 @@ struct uffd_test_ops {
(1 << _UFFDIO_ZEROPAGE) | \
(1 << _UFFDIO_WRITEPROTECT))
+#define HUGETLB_EXPECTED_IOCTLS ((1 << _UFFDIO_WAKE) | \
+ (1 << _UFFDIO_COPY))
+
static struct uffd_test_ops anon_uffd_test_ops = {
.expected_ioctls = ANON_EXPECTED_IOCTLS,
.allocate_area = anon_allocate_area,
@@ -335,7 +338,7 @@ static struct uffd_test_ops shmem_uffd_test_ops = {
};
static struct uffd_test_ops hugetlb_uffd_test_ops = {
- .expected_ioctls = UFFD_API_RANGE_IOCTLS_BASIC & ~(1 << _UFFDIO_CONTINUE),
+ .expected_ioctls = HUGETLB_EXPECTED_IOCTLS,
.allocate_area = hugetlb_allocate_area,
.release_pages = hugetlb_release_pages,
.alias_mapping = hugetlb_alias_mapping,
@@ -1580,8 +1583,6 @@ static void set_test_type(const char *type)
if (!strcmp(type, "anon")) {
test_type = TEST_ANON;
uffd_test_ops = &anon_uffd_test_ops;
- /* Only enable write-protect test for anonymous test */
- test_uffdio_wp = true;
} else if (!strcmp(type, "hugetlb")) {
test_type = TEST_HUGETLB;
uffd_test_ops = &hugetlb_uffd_test_ops;
--
2.31.1
next prev parent reply other threads:[~2021-05-27 20:23 UTC|newest]
Thread overview: 60+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-05-27 20:19 [PATCH v3 00/27] userfaultfd-wp: Support shmem and hugetlbfs Peter Xu
2021-05-27 20:19 ` [PATCH v3 01/27] mm/shmem: Unconditionally set pte dirty in mfill_atomic_install_pte Peter Xu
2021-05-27 20:19 ` [PATCH v3 02/27] shmem/userfaultfd: Take care of UFFDIO_COPY_MODE_WP Peter Xu
2021-05-27 20:19 ` [PATCH v3 03/27] mm: Clear vmf->pte after pte_unmap_same() returns Peter Xu
2021-05-27 20:19 ` [PATCH v3 04/27] mm/userfaultfd: Introduce special pte for unmapped file-backed mem Peter Xu
2021-05-28 8:32 ` Alistair Popple
2021-05-28 12:56 ` Peter Xu
2021-06-03 11:53 ` Alistair Popple
2021-06-03 14:51 ` Peter Xu
2021-06-04 0:55 ` Alistair Popple
2021-06-04 3:14 ` Hugh Dickins
2021-06-04 6:16 ` Alistair Popple
2021-06-04 16:01 ` Peter Xu
2021-06-08 13:18 ` Alistair Popple
2021-06-09 13:06 ` Alistair Popple
2021-06-09 14:43 ` Peter Xu
2021-05-27 20:21 ` [PATCH v3 05/27] mm/swap: Introduce the idea of special swap ptes Peter Xu
2021-05-27 20:21 ` [PATCH v3 06/27] shmem/userfaultfd: Handle uffd-wp special pte in page fault handler Peter Xu
2021-06-17 8:59 ` Alistair Popple
2021-06-17 15:10 ` Peter Xu
2021-05-27 20:21 ` [PATCH v3 07/27] mm: Drop first_index/last_index in zap_details Peter Xu
2021-06-21 12:20 ` Alistair Popple
2021-05-27 20:21 ` [PATCH v3 08/27] mm: Introduce zap_details.zap_flags Peter Xu
2021-06-21 12:09 ` Alistair Popple
2021-06-21 16:16 ` Peter Xu
2021-06-22 2:07 ` Alistair Popple
2021-05-27 20:21 ` [PATCH v3 09/27] mm: Introduce ZAP_FLAG_SKIP_SWAP Peter Xu
2021-06-21 12:36 ` Alistair Popple
2021-06-21 16:26 ` Peter Xu
2021-06-22 2:11 ` Alistair Popple
2021-05-27 20:21 ` [PATCH v3 10/27] mm: Pass zap_flags into unmap_mapping_pages() Peter Xu
2021-05-27 20:22 ` [PATCH v3 11/27] shmem/userfaultfd: Persist uffd-wp bit across zapping for file-backed Peter Xu
2021-06-21 8:41 ` Alistair Popple
2021-06-22 0:40 ` Peter Xu
2021-06-22 12:47 ` Alistair Popple
2021-06-22 15:44 ` Peter Xu
2021-06-23 6:04 ` Alistair Popple
2021-06-23 15:31 ` Peter Xu
2021-07-06 5:40 ` Alistair Popple
2021-07-06 15:35 ` Peter Xu
2021-07-08 2:49 ` Alistair Popple
2021-05-27 20:22 ` [PATCH v3 12/27] shmem/userfaultfd: Allow wr-protect none pte for file-backed mem Peter Xu
2021-05-27 20:22 ` [PATCH v3 13/27] shmem/userfaultfd: Allows file-back mem to be uffd wr-protected on thps Peter Xu
2021-05-27 20:22 ` [PATCH v3 14/27] shmem/userfaultfd: Handle the left-overed special swap ptes Peter Xu
2021-05-27 20:22 ` [PATCH v3 15/27] shmem/userfaultfd: Pass over uffd-wp special swap pte when fork() Peter Xu
2021-05-27 20:23 ` [PATCH v3 16/27] mm/hugetlb: Drop __unmap_hugepage_range definition from hugetlb.h Peter Xu
2021-05-27 20:23 ` [PATCH v3 17/27] mm/hugetlb: Introduce huge pte version of uffd-wp helpers Peter Xu
2021-05-27 20:23 ` [PATCH v3 18/27] hugetlb/userfaultfd: Hook page faults for uffd write protection Peter Xu
2021-05-27 20:23 ` [PATCH v3 19/27] hugetlb/userfaultfd: Take care of UFFDIO_COPY_MODE_WP Peter Xu
2021-05-27 20:23 ` [PATCH v3 20/27] hugetlb/userfaultfd: Handle UFFDIO_WRITEPROTECT Peter Xu
2021-05-27 20:23 ` [PATCH v3 21/27] mm/hugetlb: Introduce huge version of special swap pte helpers Peter Xu
2021-05-27 20:23 ` [PATCH v3 22/27] hugetlb/userfaultfd: Handle uffd-wp special pte in hugetlb pf handler Peter Xu
2021-05-27 20:23 ` [PATCH v3 23/27] hugetlb/userfaultfd: Allow wr-protect none ptes Peter Xu
2021-05-27 20:23 ` [PATCH v3 24/27] hugetlb/userfaultfd: Only drop uffd-wp special pte if required Peter Xu
2021-05-27 20:23 ` [PATCH v3 25/27] mm/pagemap: Recognize uffd-wp bit for shmem/hugetlbfs Peter Xu
2021-05-27 20:23 ` [PATCH v3 26/27] mm/userfaultfd: Enable write protection for shmem & hugetlbfs Peter Xu
2021-05-27 20:23 ` Peter Xu [this message]
2021-06-02 14:40 ` [PATCH v3 00/27] userfaultfd-wp: Support shmem and hugetlbfs Peter Xu
2021-06-02 22:36 ` Andrew Morton
2021-06-03 0:09 ` Peter Xu
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