Commit dc04a00b authored by Alexandre Ghiti's avatar Alexandre Ghiti Committed by Greg Kroah-Hartman

riscv: Adjust mmap base address at a third of task size

[ Upstream commit ae662eec ]

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: default avatarAlexandre Ghiti <aghiti@upmem.com>
Reviewed-by: default avatarChristoph Hellwig <hch@lst.de>
Signed-off-by: default avatarPalmer Dabbelt <palmer@sifive.com>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent f43e42f4
......@@ -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
......
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