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From: Yangyu Chen <cyy@cyyself.name>
To: linux-riscv@lists.infradead.org
Cc: Charlie Jenkins <charlie@rivosinc.com>,
	Paul Walmsley <paul.walmsley@sifive.com>,
	Palmer Dabbelt <palmer@dabbelt.com>, Guo Ren <guoren@kernel.org>,
	Andy Chiu <andy.chiu@sifive.com>,
	Conor Dooley <conor.dooley@microchip.com>,
	Jisheng Zhang <jszhang@kernel.org>,
	Alexandre Ghiti <alexghiti@rivosinc.com>,
	linux-mm@kvack.org, linux-kselftest@vger.kernel.org,
	linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org,
	Yangyu Chen <cyy@cyyself.name>
Subject: [PATCH v2 2/3] RISC-V: mm: only test mmap without hint
Date: Sun, 21 Jan 2024 05:49:59 +0800	[thread overview]
Message-ID: <tencent_1A8C66C86EE30ADF9160AC36B46314AE5306@qq.com> (raw)
In-Reply-To: <tencent_B2D0435BC011135736262764B511994F4805@qq.com>

The original test from the previous patchset[1] assumes the hint address
on mmap is treated as the upper bound of the return address. As we
reverted this special behavior, this test should be updated to reflect the
change.

[1]. https://lore.kernel.org/linux-riscv/20230809232218.849726-1-charlie@rivosinc.com/

Signed-off-by: Yangyu Chen <cyy@cyyself.name>
---
 .../selftests/riscv/mm/mmap_bottomup.c        | 12 --------
 .../testing/selftests/riscv/mm/mmap_default.c | 12 --------
 tools/testing/selftests/riscv/mm/mmap_test.h  | 30 -------------------
 3 files changed, 54 deletions(-)

diff --git a/tools/testing/selftests/riscv/mm/mmap_bottomup.c b/tools/testing/selftests/riscv/mm/mmap_bottomup.c
index 1757d19ca89b..1ba703d3f552 100644
--- a/tools/testing/selftests/riscv/mm/mmap_bottomup.c
+++ b/tools/testing/selftests/riscv/mm/mmap_bottomup.c
@@ -15,20 +15,8 @@ TEST(infinite_rlimit)
 	do_mmaps(&mmap_addresses);
 
 	EXPECT_NE(MAP_FAILED, mmap_addresses.no_hint);
-	EXPECT_NE(MAP_FAILED, mmap_addresses.on_37_addr);
-	EXPECT_NE(MAP_FAILED, mmap_addresses.on_38_addr);
-	EXPECT_NE(MAP_FAILED, mmap_addresses.on_46_addr);
-	EXPECT_NE(MAP_FAILED, mmap_addresses.on_47_addr);
-	EXPECT_NE(MAP_FAILED, mmap_addresses.on_55_addr);
-	EXPECT_NE(MAP_FAILED, mmap_addresses.on_56_addr);
 
 	EXPECT_GT(1UL << 47, (unsigned long)mmap_addresses.no_hint);
-	EXPECT_GT(1UL << 38, (unsigned long)mmap_addresses.on_37_addr);
-	EXPECT_GT(1UL << 38, (unsigned long)mmap_addresses.on_38_addr);
-	EXPECT_GT(1UL << 38, (unsigned long)mmap_addresses.on_46_addr);
-	EXPECT_GT(1UL << 47, (unsigned long)mmap_addresses.on_47_addr);
-	EXPECT_GT(1UL << 47, (unsigned long)mmap_addresses.on_55_addr);
-	EXPECT_GT(1UL << 56, (unsigned long)mmap_addresses.on_56_addr);
 #endif
 }
 
diff --git a/tools/testing/selftests/riscv/mm/mmap_default.c b/tools/testing/selftests/riscv/mm/mmap_default.c
index c63c60b9397e..f1ac860dcf04 100644
--- a/tools/testing/selftests/riscv/mm/mmap_default.c
+++ b/tools/testing/selftests/riscv/mm/mmap_default.c
@@ -15,20 +15,8 @@ TEST(default_rlimit)
 	do_mmaps(&mmap_addresses);
 
 	EXPECT_NE(MAP_FAILED, mmap_addresses.no_hint);
-	EXPECT_NE(MAP_FAILED, mmap_addresses.on_37_addr);
-	EXPECT_NE(MAP_FAILED, mmap_addresses.on_38_addr);
-	EXPECT_NE(MAP_FAILED, mmap_addresses.on_46_addr);
-	EXPECT_NE(MAP_FAILED, mmap_addresses.on_47_addr);
-	EXPECT_NE(MAP_FAILED, mmap_addresses.on_55_addr);
-	EXPECT_NE(MAP_FAILED, mmap_addresses.on_56_addr);
 
 	EXPECT_GT(1UL << 47, (unsigned long)mmap_addresses.no_hint);
-	EXPECT_GT(1UL << 38, (unsigned long)mmap_addresses.on_37_addr);
-	EXPECT_GT(1UL << 38, (unsigned long)mmap_addresses.on_38_addr);
-	EXPECT_GT(1UL << 38, (unsigned long)mmap_addresses.on_46_addr);
-	EXPECT_GT(1UL << 47, (unsigned long)mmap_addresses.on_47_addr);
-	EXPECT_GT(1UL << 47, (unsigned long)mmap_addresses.on_55_addr);
-	EXPECT_GT(1UL << 56, (unsigned long)mmap_addresses.on_56_addr);
 #endif
 }
 
diff --git a/tools/testing/selftests/riscv/mm/mmap_test.h b/tools/testing/selftests/riscv/mm/mmap_test.h
index 2e0db9c5be6c..d2271426288f 100644
--- a/tools/testing/selftests/riscv/mm/mmap_test.h
+++ b/tools/testing/selftests/riscv/mm/mmap_test.h
@@ -10,47 +10,17 @@
 
 struct addresses {
 	int *no_hint;
-	int *on_37_addr;
-	int *on_38_addr;
-	int *on_46_addr;
-	int *on_47_addr;
-	int *on_55_addr;
-	int *on_56_addr;
 };
 
 // Only works on 64 bit
 #if __riscv_xlen == 64
 static inline void do_mmaps(struct addresses *mmap_addresses)
 {
-	/*
-	 * Place all of the hint addresses on the boundaries of mmap
-	 * sv39, sv48, sv57
-	 * User addresses end at 1<<38, 1<<47, 1<<56 respectively
-	 */
-	void *on_37_bits = (void *)(1UL << 37);
-	void *on_38_bits = (void *)(1UL << 38);
-	void *on_46_bits = (void *)(1UL << 46);
-	void *on_47_bits = (void *)(1UL << 47);
-	void *on_55_bits = (void *)(1UL << 55);
-	void *on_56_bits = (void *)(1UL << 56);
-
 	int prot = PROT_READ | PROT_WRITE;
 	int flags = MAP_PRIVATE | MAP_ANONYMOUS;
 
 	mmap_addresses->no_hint =
 		mmap(NULL, 5 * sizeof(int), prot, flags, 0, 0);
-	mmap_addresses->on_37_addr =
-		mmap(on_37_bits, 5 * sizeof(int), prot, flags, 0, 0);
-	mmap_addresses->on_38_addr =
-		mmap(on_38_bits, 5 * sizeof(int), prot, flags, 0, 0);
-	mmap_addresses->on_46_addr =
-		mmap(on_46_bits, 5 * sizeof(int), prot, flags, 0, 0);
-	mmap_addresses->on_47_addr =
-		mmap(on_47_bits, 5 * sizeof(int), prot, flags, 0, 0);
-	mmap_addresses->on_55_addr =
-		mmap(on_55_bits, 5 * sizeof(int), prot, flags, 0, 0);
-	mmap_addresses->on_56_addr =
-		mmap(on_56_bits, 5 * sizeof(int), prot, flags, 0, 0);
 }
 #endif /* __riscv_xlen == 64 */
 
-- 
2.43.0


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  parent reply	other threads:[~2024-01-20 21:50 UTC|newest]

Thread overview: 8+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2024-01-20 21:48 [PATCH v2 0/3] RISC-V: mm: do not treat hint addr on mmap as the upper bound to search Yangyu Chen
2024-01-20 21:49 ` [PATCH v2 1/3] " Yangyu Chen
2024-01-20 21:49 ` Yangyu Chen [this message]
2024-01-20 21:50 ` [PATCH v2 3/3] Documentation: riscv: correct sv57 kernel behavior Yangyu Chen
2024-02-29 12:10 ` [PATCH v2 0/3] RISC-V: mm: do not treat hint addr on mmap as the upper bound to search Yangyu Chen
2024-02-29 19:21   ` Palmer Dabbelt
2024-02-29 20:54     ` Yangyu Chen
2024-03-01 13:02       ` Conor Dooley

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