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authorLinus Torvalds <torvalds@linux-foundation.org>2016-12-12 14:20:14 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2016-12-12 14:20:14 -0800
commitef486c599a1f20c465ea196cd2019474708fbe52 (patch)
treefac86dc07b629d39977be00a4a2747a4a5788509
parent5fc0363d439ff15d2b9b1a5abe8265fa17512975 (diff)
parent990e9dc381e6999a0eba8ebaf8747daaa8c58337 (diff)
downloadop-kernel-dev-ef486c599a1f20c465ea196cd2019474708fbe52.zip
op-kernel-dev-ef486c599a1f20c465ea196cd2019474708fbe52.tar.gz
Merge branch 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 cleanups from Ingo Molnar: "Two cleanups in the LDT handling code, by Dan Carpenter and Thomas Gleixner" * 'x86-cleanups-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/ldt: Make all size computations unsigned x86/ldt: Make a size argument unsigned
-rw-r--r--arch/x86/events/core.c2
-rw-r--r--arch/x86/include/asm/mmu_context.h2
-rw-r--r--arch/x86/kernel/ldt.c12
3 files changed, 8 insertions, 8 deletions
diff --git a/arch/x86/events/core.c b/arch/x86/events/core.c
index 7fe88bb..f1c2258 100644
--- a/arch/x86/events/core.c
+++ b/arch/x86/events/core.c
@@ -2303,7 +2303,7 @@ valid_user_frame(const void __user *fp, unsigned long size)
static unsigned long get_segment_base(unsigned int segment)
{
struct desc_struct *desc;
- int idx = segment >> 3;
+ unsigned int idx = segment >> 3;
if ((segment & SEGMENT_TI_MASK) == SEGMENT_LDT) {
#ifdef CONFIG_MODIFY_LDT_SYSCALL
diff --git a/arch/x86/include/asm/mmu_context.h b/arch/x86/include/asm/mmu_context.h
index 8e0a9fe..306c7e12 100644
--- a/arch/x86/include/asm/mmu_context.h
+++ b/arch/x86/include/asm/mmu_context.h
@@ -47,7 +47,7 @@ struct ldt_struct {
* allocations, but it's not worth trying to optimize.
*/
struct desc_struct *entries;
- int size;
+ unsigned int size;
};
/*
diff --git a/arch/x86/kernel/ldt.c b/arch/x86/kernel/ldt.c
index 6707039..f09df2f 100644
--- a/arch/x86/kernel/ldt.c
+++ b/arch/x86/kernel/ldt.c
@@ -34,10 +34,10 @@ 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;
+ unsigned int alloc_size;
if (size > LDT_ENTRIES)
return NULL;
@@ -207,11 +207,11 @@ static int read_default_ldt(void __user *ptr, unsigned long bytecount)
static int write_ldt(void __user *ptr, unsigned long bytecount, int oldmode)
{
struct mm_struct *mm = current->mm;
+ struct ldt_struct *new_ldt, *old_ldt;
+ unsigned int oldsize, newsize;
+ struct user_desc ldt_info;
struct desc_struct ldt;
int error;
- struct user_desc ldt_info;
- int oldsize, newsize;
- struct ldt_struct *new_ldt, *old_ldt;
error = -EINVAL;
if (bytecount != sizeof(ldt_info))
@@ -249,7 +249,7 @@ static int write_ldt(void __user *ptr, unsigned long bytecount, int oldmode)
old_ldt = mm->context.ldt;
oldsize = old_ldt ? old_ldt->size : 0;
- newsize = max((int)(ldt_info.entry_number + 1), oldsize);
+ newsize = max(ldt_info.entry_number + 1, oldsize);
error = -ENOMEM;
new_ldt = alloc_ldt_struct(newsize);
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