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Howlett" , Vlastimil Babka , Jann Horn , Pedro Falcato , Mike Rapoport , Suren Baghdasaryan , Kees Cook , linux-mm@kvack.org, linux-kernel@vger.kernel.org, Vineet Gupta , Russell King , Catalin Marinas , Will Deacon , Brian Cain , Huacai Chen , WANG Xuerui , Thomas Bogendoerfer , Dinh Nguyen , Madhavan Srinivasan , Michael Ellerman , Nicholas Piggin , Christophe Leroy , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Christian Borntraeger , Sven Schnelle , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , x86@kernel.org, "H . Peter Anvin" , Richard Weinberger , Anton Ivanov , Johannes Berg , Alexander Viro , Christian Brauner , Jan Kara , Xu Xin , Chengming Zhou , Michal Hocko , Paul Moore , Stephen Smalley , Ondrej Mosnacek , linux-snps-arc@lists.infradead.org, linux-arm-kernel@lists.infradead.org, linux-hexagon@vger.kernel.org, loongarch@lists.linux.dev, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-um@lists.infradead.org, linux-fsdevel@vger.kernel.org, selinux@vger.kernel.org Subject: [PATCH v4 12/25] tools/testing/vma: test that legacy flag helpers work correctly Date: Fri, 20 Mar 2026 19:38:29 +0000 Message-ID: <3374e50053adb65818fde948ae3488e1e29ae8b1.1774034900.git.ljs@kernel.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Stat-Signature: 4yztug7dmpkzj1zhako3so14kgjsgid5 X-Rspamd-Queue-Id: 04C98C000F X-Rspamd-Server: rspam03 X-HE-Tag: 1774035554-960608 X-HE-Meta: U2FsdGVkX1/UjqH2IGRZY8mcYLNd2+9noMx4GuPZ1gd5Xt81dNYNjO/djQe8CaWrAtXlm2uN3Flf29EbcW3q+6iBPK2QFdYCFwBN3P5uoILBJ8W6FMW6117HR1hbXnfg9EpnSL4nnxDY4RKSrK+NBuIj/x5qkPJvJ5Zv/OhvPv6zV9TU1Ss8N355HUrj2uW4oKsm/9gq6m5Eeejs0tyAYNrqhpvR2vaa44htSLiZTmngxlIJFykDzIcJhI+NfytRY6OY1eJ3XIVjy3ozsMyQgD4OIbhokkYwH0LcaZ/Qvajag1v15Je6KFsPnRdE+uJehiygJ6sZP4acHmTOQ3A+i9Lo4rxKgQZu5BC5H6pcoLBvoymdsCT6Knu3rJp0PkTbhVA6gazU/vIF0UL2E73H4zQufDS9oY6YP5m/FqAgH7mFEYjBTDf8n9D5q7B0ZSvResmHogcE4yy0n8FTCfX1WbB/5K+0YQ4OfSC7jddIWG2l9VLIOGsnhvOFl701fMMuniarFE+ma/2C6/Ln9LiyF2dPDEnG83B3WTwEvJKkz9XixW9wCwWono3397ybPixiKyjDmo8tTHf/gbOWqBRkTGTuQRbtXqaeUmCFu9Vr6v4pkn/x/v9D+UW9Iu+mzAvUo3qfePohpcowjg9nUtVj03HRpdEHn2q+sDek6NrcRAF6Y3UUjYQkqf3QmZ4mGej82hRW4tq0jwHjCTr9sRTZDb5X1Duf64BPUmzqgt0Qc+/78pMNaChj12pQLig/lVIY6gZUdLYguITqY8vfuSCYJOwtuwaiM6xdxgrjcZGxOJ1Gu0BXW5FQHIuPOakmv6SQeCs2gHnCnhln4XzQUVaEHSk+tDNggs5XuSdueTGcJTAszPQ+tasNbHIt7KVg86YsLrqAKfejM6ew91/wRr99v8PaWbfrzKldfUFFKaDtv5AX/TvKixwybTu2PnnwC8VGo11VgUgiAPjeeEty0oa W0hqFLGW PUcT4r0hIao5+bh40vJE6Dx8YKsMUbdsr1NWlQnfLwbOqwhAnCu5sWexC9WlLrm4pJDY9ZSmVIgOtv4sBW4hbq+x2gec2GnQT3q8f3d2IbWx+T1ScHhS3MPwiPxa5lwv0ZCaOWdyhhXVxCMXtWzQVa+XbI9bN5meSa1hfF2N5i6Cuzrm1KhLeZSl/OUoRxTVW1F2b0Gb/pKnYNV2zG9rOzeAfQ+8pqirCGO/bP3UIoEwmeLxAapA2spfNjy0iRwltdrpl472eR7yO5vPfeQryRKoHj7Cr9lQDvtyfuoMCrcZ7NnHNcn+Da8HxFA== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Update the existing compare_legacy_flags() predicate function to assert that legacy_to_vma_flags() and vma_flags_to_legacy() behave as expected. Signed-off-by: Lorenzo Stoakes (Oracle) --- tools/testing/vma/tests/vma.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/tools/testing/vma/tests/vma.c b/tools/testing/vma/tests/vma.c index 98e465fb1bf2..1fae25170ff7 100644 --- a/tools/testing/vma/tests/vma.c +++ b/tools/testing/vma/tests/vma.c @@ -5,6 +5,7 @@ static bool compare_legacy_flags(vm_flags_t legacy_flags, vma_flags_t flags) const unsigned long legacy_val = legacy_flags; /* The lower word should contain the precise same value. */ const unsigned long flags_lower = flags.__vma_flags[0]; + vma_flags_t converted_flags; #if NUM_VMA_FLAG_BITS > BITS_PER_LONG int i; @@ -17,6 +18,11 @@ static bool compare_legacy_flags(vm_flags_t legacy_flags, vma_flags_t flags) static_assert(sizeof(legacy_flags) == sizeof(unsigned long)); + /* Assert that legacy flag helpers work correctly. */ + converted_flags = legacy_to_vma_flags(legacy_flags); + ASSERT_FLAGS_SAME_MASK(&converted_flags, flags); + ASSERT_EQ(vma_flags_to_legacy(flags), legacy_flags); + return legacy_val == flags_lower; } -- 2.53.0