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Sun, 18 Jan 2026 05:51:33 -0800 (PST) Received: from localhost ([2407:cdc0:b010::101]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-352677ec701sm9206524a91.5.2026.01.18.05.51.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 18 Jan 2026 05:51:32 -0800 (PST) From: zishun yi To: shuah@kernel.org Cc: vivek.kasireddy@intel.com, akpm@linux-foundation.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, richard.weiyang@gmail.com, reddybalavignesh9979@gmail.com, zishun yi Subject: [PATCH v1] selftests: udmabuf: fix hugepage size calculation Date: Sun, 18 Jan 2026 21:51:26 +0800 Message-ID: <20260118135126.102472-1-zishun.yi.dev@gmail.com> X-Mailer: git-send-email 2.52.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" udmabuf's test 6 and 7 is intended to verify the behavior of 2MB huge pages= migration, but the helper function still calculates the size using standard (4KB) page= s. Signed-off-by: zishun yi --- tools/testing/selftests/drivers/dma-buf/udmabuf.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/tools/testing/selftests/drivers/dma-buf/udmabuf.c b/tools/test= ing/selftests/drivers/dma-buf/udmabuf.c index d78aec662586..8887fb9b79df 100644 --- a/tools/testing/selftests/drivers/dma-buf/udmabuf.c +++ b/tools/testing/selftests/drivers/dma-buf/udmabuf.c @@ -69,7 +69,7 @@ static int create_udmabuf_list(int devfd, int memfd, off6= 4_t memfd_size) for (i =3D 0; i < NUM_ENTRIES; i++) { list->list[i].memfd =3D memfd; list->list[i].offset =3D i * (memfd_size / NUM_ENTRIES); - list->list[i].size =3D getpagesize() * NUM_PAGES; + list->list[i].size =3D page_size * NUM_PAGES; } =20 list->count =3D NUM_ENTRIES; @@ -115,8 +115,8 @@ static int compare_chunks(void *addr1, void *addr2, off= 64_t memfd_size) while (i < NUM_ENTRIES) { off =3D i * (memfd_size / NUM_ENTRIES); for (j =3D 0; j < NUM_PAGES; j++, k++) { - char1 =3D *((char *)addr1 + off + (j * getpagesize())); - char2 =3D *((char *)addr2 + (k * getpagesize())); + char1 =3D *((char *)addr1 + off + (j * page_size)); + char2 =3D *((char *)addr2 + (k * page_size)); if (char1 !=3D char2) { ret =3D -1; goto err; @@ -126,7 +126,7 @@ static int compare_chunks(void *addr1, void *addr2, off= 64_t memfd_size) } err: munmap(addr1, memfd_size); - munmap(addr2, NUM_ENTRIES * NUM_PAGES * getpagesize()); + munmap(addr2, NUM_ENTRIES * NUM_PAGES * page_size); return ret; } =20 @@ -240,7 +240,7 @@ int main(int argc, char *argv[]) addr1 =3D mmap_fd(memfd, size); write_to_memfd(addr1, size, 'a'); buf =3D create_udmabuf_list(devfd, memfd, size); - addr2 =3D mmap_fd(buf, NUM_PAGES * NUM_ENTRIES * getpagesize()); + addr2 =3D mmap_fd(buf, NUM_PAGES * NUM_ENTRIES * page_size); write_to_memfd(addr1, size, 'b'); ret =3D compare_chunks(addr1, addr2, size); if (ret < 0) @@ -256,7 +256,7 @@ int main(int argc, char *argv[]) size =3D MEMFD_SIZE * page_size; memfd =3D create_memfd_with_seals(size, true); buf =3D create_udmabuf_list(devfd, memfd, size); - addr2 =3D mmap_fd(buf, NUM_PAGES * NUM_ENTRIES * getpagesize()); + addr2 =3D mmap_fd(buf, NUM_PAGES * NUM_ENTRIES * page_size); addr1 =3D mmap_fd(memfd, size); write_to_memfd(addr1, size, 'a'); write_to_memfd(addr1, size, 'b'); --=20 2.52.0