aboutsummaryrefslogtreecommitdiffstats
path: root/arch/x86/mm/kmemcheck/shadow.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/x86/mm/kmemcheck/shadow.c')
-rw-r--r--arch/x86/mm/kmemcheck/shadow.c16
1 files changed, 14 insertions, 2 deletions
diff --git a/arch/x86/mm/kmemcheck/shadow.c b/arch/x86/mm/kmemcheck/shadow.c
index 3f66b82076a3..aec124214d97 100644
--- a/arch/x86/mm/kmemcheck/shadow.c
+++ b/arch/x86/mm/kmemcheck/shadow.c
@@ -125,12 +125,12 @@ void kmemcheck_mark_initialized_pages(struct page *p, unsigned int n)
125 125
126enum kmemcheck_shadow kmemcheck_shadow_test(void *shadow, unsigned int size) 126enum kmemcheck_shadow kmemcheck_shadow_test(void *shadow, unsigned int size)
127{ 127{
128#ifdef CONFIG_KMEMCHECK_PARTIAL_OK
128 uint8_t *x; 129 uint8_t *x;
129 unsigned int i; 130 unsigned int i;
130 131
131 x = shadow; 132 x = shadow;
132 133
133#ifdef CONFIG_KMEMCHECK_PARTIAL_OK
134 /* 134 /*
135 * Make sure _some_ bytes are initialized. Gcc frequently generates 135 * Make sure _some_ bytes are initialized. Gcc frequently generates
136 * code to access neighboring bytes. 136 * code to access neighboring bytes.
@@ -139,13 +139,25 @@ enum kmemcheck_shadow kmemcheck_shadow_test(void *shadow, unsigned int size)
139 if (x[i] == KMEMCHECK_SHADOW_INITIALIZED) 139 if (x[i] == KMEMCHECK_SHADOW_INITIALIZED)
140 return x[i]; 140 return x[i];
141 } 141 }
142
143 return x[0];
142#else 144#else
145 return kmemcheck_shadow_test_all(shadow, size);
146#endif
147}
148
149enum kmemcheck_shadow kmemcheck_shadow_test_all(void *shadow, unsigned int size)
150{
151 uint8_t *x;
152 unsigned int i;
153
154 x = shadow;
155
143 /* All bytes must be initialized. */ 156 /* All bytes must be initialized. */
144 for (i = 0; i < size; ++i) { 157 for (i = 0; i < size; ++i) {
145 if (x[i] != KMEMCHECK_SHADOW_INITIALIZED) 158 if (x[i] != KMEMCHECK_SHADOW_INITIALIZED)
146 return x[i]; 159 return x[i];
147 } 160 }
148#endif
149 161
150 return x[0]; 162 return x[0];
151} 163}