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Subject[tip:x86/cleanups] x86/ldt: Make a size argument unsigned
Commit-ID:  296dc5806de57dc84fce000d60fc201ba40f96e8
Author: Dan Carpenter <>
AuthorDate: Thu, 8 Dec 2016 13:56:03 +0300
Committer: Thomas Gleixner <>
CommitDate: Sat, 10 Dec 2016 00:24:39 +0100

x86/ldt: Make a size argument unsigned

My static checker complains that we put an upper bound on the "size"
argument but not a lower bound. The checker is not smart enough to know
the possible ranges of "old_mm->context.ldt->size" from
init_new_context_ldt() so it thinks maybe it could be negative.

Let's make it unsigned to silence the warning and future proof the code
a bit.

Signed-off-by: Dan Carpenter <>
Acked-by: Andy Lutomirski <>
Cc: Dave Hansen <>
Cc: Andrey Ryabinin <>
Cc: Andrew Morton <>
Signed-off-by: Thomas Gleixner <>

arch/x86/kernel/ldt.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/x86/kernel/ldt.c b/arch/x86/kernel/ldt.c
index 6707039..e25b668 100644
--- a/arch/x86/kernel/ldt.c
+++ b/arch/x86/kernel/ldt.c
@@ -34,7 +34,7 @@ static void flush_ldt(void *current_mm)

/* The caller must call finalize_ldt_struct on the result. LDT starts zeroed. */
-static struct ldt_struct *alloc_ldt_struct(int size)
+static struct ldt_struct *alloc_ldt_struct(unsigned int size)
struct ldt_struct *new_ldt;
int alloc_size;
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