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authorHelge Deller <deller@gmx.de>2023-08-19 00:53:28 +0200
committerHelge Deller <deller@gmx.de>2023-08-22 10:24:46 +0200
commit3033cd4307681c60db6d08f398a64484b36e0b0f (patch)
tree41a33f799e22aef056f347b382a1630a268bfe6e /mm/util.c
parentparisc: Fix /proc/cpuinfo output for lscpu (diff)
downloadlinux-3033cd4307681c60db6d08f398a64484b36e0b0f.tar.xz
linux-3033cd4307681c60db6d08f398a64484b36e0b0f.zip
parisc: Use generic mmap top-down layout and brk randomization
parisc uses a top-down layout by default that exactly fits the generic functions, so get rid of arch specific code and use the generic version by selecting ARCH_WANT_DEFAULT_TOPDOWN_MMAP_LAYOUT. Note that on parisc the stack always grows up and a "unlimited stack" simply means that the value as defined in CONFIG_STACK_MAX_DEFAULT_SIZE_MB should be used. So RLIM_INFINITY is not an indicator to use the legacy memory layout. Signed-off-by: Helge Deller <deller@gmx.de>
Diffstat (limited to 'mm/util.c')
-rw-r--r--mm/util.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/mm/util.c b/mm/util.c
index dd12b9531ac4..881020644497 100644
--- a/mm/util.c
+++ b/mm/util.c
@@ -396,7 +396,10 @@ static int mmap_is_legacy(struct rlimit *rlim_stack)
if (current->personality & ADDR_COMPAT_LAYOUT)
return 1;
- if (rlim_stack->rlim_cur == RLIM_INFINITY)
+ /* On parisc the stack always grows up - so a unlimited stack should
+ * not be an indicator to use the legacy memory layout. */
+ if (rlim_stack->rlim_cur == RLIM_INFINITY &&
+ !IS_ENABLED(CONFIG_STACK_GROWSUP))
return 1;
return sysctl_legacy_va_layout;