From 0f0ac647fe646529c51b5f5c68221502dc88d239 Mon Sep 17 00:00:00 2001
From: Andrew Waterman <andrew@sifive.com>
Date: Tue, 18 Apr 2017 09:59:04 -0700
Subject: Increase PK stack size to 3% of memory, up to 8 MiB

---
 pk/mmap.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'pk')

diff --git a/pk/mmap.c b/pk/mmap.c
index a063f42..94fecdd 100644
--- a/pk/mmap.c
+++ b/pk/mmap.c
@@ -401,7 +401,7 @@ uintptr_t pk_vm_init()
   current.mmap_max = current.brk_max =
     MIN(DRAM_BASE, mem_size - (first_free_paddr - DRAM_BASE));
 
-  size_t stack_size = RISCV_PGSIZE * 64;
+  size_t stack_size = MIN(mem_pages >> 5, 2048) * RISCV_PGSIZE;
   size_t stack_bottom = __do_mmap(current.mmap_max - stack_size, stack_size, PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE|MAP_ANONYMOUS|MAP_FIXED, 0, 0);
   kassert(stack_bottom != (uintptr_t)-1);
   current.stack_top = stack_bottom + stack_size;
-- 
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