tools/testing/vma: add simple test for append_vma_flags()

Add a simple test for append_vma_flags() to assert that it behaves as
expected.

Additionally, include the VMA_REMAP_FLAGS definition in the VMA tests to
allow us to use this value in the testing.

Link: https://lkml.kernel.org/r/eebd946c5325ad7fae93027245a562eb1aeb68a2.1774034900.git.ljs@kernel.org
Signed-off-by: Lorenzo Stoakes (Oracle) <ljs@kernel.org>
Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Alexandre Ghiti <alex@ghiti.fr>
Cc: Al Viro <viro@zeniv.linux.org.uk>
Cc: Anton Ivanov <anton.ivanov@cambridgegreys.com>
Cc: "Borislav Petkov (AMD)" <bp@alien8.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Chengming Zhou <chengming.zhou@linux.dev>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Christian Brauner <brauner@kernel.org>
Cc: David Hildenbrand <david@kernel.org>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Jan Kara <jack@suse.cz>
Cc: Jann Horn <jannh@google.com>
Cc: Johannes Berg <johannes@sipsolutions.net>
Cc: Kees Cook <kees@kernel.org>
Cc: Liam Howlett <liam.howlett@oracle.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Ondrej Mosnacek <omosnace@redhat.com>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Paul Moore <paul@paul-moore.com>
Cc: Pedro Falcato <pfalcato@suse.de>
Cc: Richard Weinberger <richard@nod.at>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Stephen Smalley <stephen.smalley.work@gmail.com>
Cc: Suren Baghdasaryan <surenb@google.com>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vineet Gupta <vgupta@kernel.org>
Cc: Vlastimil Babka (SUSE) <vbabka@kernel.org>
Cc: WANG Xuerui <kernel@xen0n.name>
Cc: Will Deacon <will@kernel.org>
Cc: xu xin <xu.xin16@zte.com.cn>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

authored by

Lorenzo Stoakes (Oracle) and committed by

Andrew Morton 2 months ago b22a48ec e8d464f4

+28

2 changed files

expand all

tools

testing

vma

include

dup.h

tests

vma.c

tools/testing/vma/include/dup.h

··· 345 345 */ 346 346 #define VM_SPECIAL (VM_IO | VM_DONTEXPAND | VM_PFNMAP | VM_MIXEDMAP) 347 347 348 + #define VMA_REMAP_FLAGS mk_vma_flags(VMA_IO_BIT, VMA_PFNMAP_BIT, \ 349 + VMA_DONTEXPAND_BIT, VMA_DONTDUMP_BIT) 350 + 348 351 #define DEFAULT_MAP_WINDOW ((1UL << 47) - PAGE_SIZE) 349 352 #define TASK_SIZE_LOW DEFAULT_MAP_WINDOW 350 353 #define TASK_SIZE_MAX DEFAULT_MAP_WINDOW

+25

tools/testing/vma/tests/vma.c

··· 555 555 return true; 556 556 } 557 557 558 + /* Ensure append_vma_flags() acts as expected. */ 559 + static bool test_append_vma_flags(void) 560 + { 561 + vma_flags_t flags = append_vma_flags(VMA_REMAP_FLAGS, VMA_READ_BIT, 562 + VMA_WRITE_BIT 563 + #if NUM_VMA_FLAG_BITS > 64 564 + , 64, 65 565 + #endif 566 + ); 567 + 568 + ASSERT_FLAGS_SAME(&flags, VMA_IO_BIT, VMA_PFNMAP_BIT, 569 + VMA_DONTEXPAND_BIT, VMA_DONTDUMP_BIT, VMA_READ_BIT, 570 + VMA_WRITE_BIT 571 + #if NUM_VMA_FLAG_BITS > 64 572 + , 64, 65 573 + #endif 574 + ); 575 + 576 + flags = append_vma_flags(EMPTY_VMA_FLAGS, VMA_READ_BIT, VMA_WRITE_BIT); 577 + ASSERT_FLAGS_SAME(&flags, VMA_READ_BIT, VMA_WRITE_BIT); 578 + 579 + return true; 580 + } 581 + 558 582 static void run_vma_tests(int *num_tests, int *num_fail) 559 583 { 560 584 TEST(copy_vma); ··· 593 569 TEST(vma_flags_empty); 594 570 TEST(vma_flags_diff); 595 571 TEST(vma_flags_and); 572 + TEST(append_vma_flags); 596 573 }

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