David Hildenbrand e5013f11c6 selftest/mm: ksm_functional_tests: Add PROT_NONE test ... Let's test whether merging and unmerging in PROT_NONE areas works as expected. Pass a page protection to mmap_and_merge_range(), which will trigger an mprotect() after writing to the pages, but before enabling merging. Make sure that unsharing works as expected, by performing a ptrace write (using /proc/self/mem) and by setting MADV_UNMERGEABLE. Note that this implicitly tests that ptrace writes in an inaccessible (PROT_NONE) mapping work as expected. [david@redhat.com: use sizeof(i) in test_prot_none(), per Peter] Link: https://lkml.kernel.org/r/e9cdb144-70c7-6596-2377-e675635c94e0@redhat.com Link: https://lkml.kernel.org/r/20230803143208.383663-8-david@redhat.com Signed-off-by: David Hildenbrand <david@redhat.com> Acked-by: Peter Xu <peterx@redhat.com> Cc: Hugh Dickins <hughd@google.com> Cc: Jason Gunthorpe <jgg@ziepe.ca> Cc: John Hubbard <jhubbard@nvidia.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: liubo <liubo254@huawei.com> Cc: Matthew Wilcox (Oracle) <willy@infradead.org> Cc: Mel Gorman <mgorman@suse.de> Cc: Mel Gorman <mgorman@techsingularity.net> Cc: Paolo Bonzini <pbonzini@redhat.com> Cc: Shuah Khan <shuah@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>		2023-08-21 14:28:42 -07:00
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crypto/chacha20-s390
cxl	tools/testing/cxl: Remove unused SZ_512G macro	2023-07-20 23:35:22 -06:00
fault-injection
ktest
kunit
memblock
nvdimm
radix-tree	merge mm-hotfixes-stable into mm-stable to pick up depended-upon changes	2023-08-21 14:26:20 -07:00
scatterlist
selftests	selftest/mm: ksm_functional_tests: Add PROT_NONE test	2023-08-21 14:28:42 -07:00
vsock