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| author | Alexandre Ghiti <aghiti@upmem.com> | 2018-12-10 06:21:46 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-03-13 14:02:28 -0700 |
| commit | dc04a00b3cbb89c96e3b5d5ef7b7cb75d1d747ec (patch) | |
| tree | ced86b288e5c3eeeb428cd686f0f16763c6150f3 /arch/riscv/include | |
| parent | f43e42f46aa87bc0507bde9a0cd6ead663ba6a30 (diff) | |
| download | linux-stable-dc04a00b3cbb89c96e3b5d5ef7b7cb75d1d747ec.tar.gz linux-stable-dc04a00b3cbb89c96e3b5d5ef7b7cb75d1d747ec.tar.bz2 linux-stable-dc04a00b3cbb89c96e3b5d5ef7b7cb75d1d747ec.zip | |
riscv: Adjust mmap base address at a third of task size
[ Upstream commit ae662eec8a515ab550524e04c793b5ddf1aae3a1 ]
This ratio is the most used among all other architectures and make
icache_hygiene libhugetlbfs test pass: this test mmap lots of
hugepages whose addresses, without this patch, reach the end of
the process user address space.
Signed-off-by: Alexandre Ghiti <aghiti@upmem.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'arch/riscv/include')
| -rw-r--r-- | arch/riscv/include/asm/processor.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/riscv/include/asm/processor.h b/arch/riscv/include/asm/processor.h index 3fe4af8147d2..c23578a37b44 100644 --- a/arch/riscv/include/asm/processor.h +++ b/arch/riscv/include/asm/processor.h @@ -22,7 +22,7 @@ * This decides where the kernel will search for a free chunk of vm * space during mmap's. */ -#define TASK_UNMAPPED_BASE PAGE_ALIGN(TASK_SIZE >> 1) +#define TASK_UNMAPPED_BASE PAGE_ALIGN(TASK_SIZE / 3) #define STACK_TOP TASK_SIZE #define STACK_TOP_MAX STACK_TOP |