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[v3,19/30] target/s390x: fix adj_len_to_page

Message ID 20170531220129.27724-20-aurelien@aurel32.net
State New
Headers show

Commit Message

Aurelien Jarno May 31, 2017, 10:01 p.m. UTC 
adj_len_to_page doesn't return the correct result when the address
is already page aligned and the length is bigger than a page. Fix that.

Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
---
 target/s390x/mem_helper.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)
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Patch

diff --git a/target/s390x/mem_helper.c b/target/s390x/mem_helper.c
index aaa347c121..6dfa087ff1 100644
--- a/target/s390x/mem_helper.c
+++ b/target/s390x/mem_helper.c
@@ -61,7 +61,7 @@  static inline uint32_t adj_len_to_page(uint32_t len, uint64_t addr)
 {
 #ifndef CONFIG_USER_ONLY
     if ((addr & ~TARGET_PAGE_MASK) + len - 1 >= TARGET_PAGE_SIZE) {
-        return -addr & ~TARGET_PAGE_MASK;
+        return -(addr | TARGET_PAGE_MASK);
     }
 #endif
     return len;