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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 v3 12/23] tools/testing/vma: test that legacy flag helpers work correctly Date: Wed, 18 Mar 2026 15:50:23 +0000 Message-ID: <4bbead202fcd419239913a61de769b209aa298fd.1773846935.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-Rspamd-Queue-Id: 88C0AA0015 X-Stat-Signature: ugo4sdbo96xo4o7xw6kw53q5jmjsmeji X-Rspam-User: X-Rspamd-Server: rspam05 X-HE-Tag: 1773849075-918909 X-HE-Meta: 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 Lmh2hBJl xCCZeWmRqz5YvPsiFSFE+joHoL104sGgidWf83O8OmTYSmzbH9ocJSyEm4CeB5xePmLglVuUowABZGmCmuoFWdVAahUhwarVUsSqykpKU0IdG0KkvMHw7ELc0hdOIyFtrd7ffY4Hf4UIF6o8Or8sB5oT4lHG1v2GB2oNXf26g6jyNpms/DTL+CilM0c/5/jGpy9ghtTck3i6eiX7h80b6XU0IscwueSVIIl7pHAFdsDqEsl70s2x9xAxldobUkBUCMaNtLxOt5PC5QZO0IG0SsQa+ClDt5EEbnGeSN6QtwZZXw/M= 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