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-rw-r--r--tools/xentrace/xentrace.c10
1 files changed, 5 insertions, 5 deletions
diff --git a/tools/xentrace/xentrace.c b/tools/xentrace/xentrace.c
index 6291cde033..8812bfdf3b 100644
--- a/tools/xentrace/xentrace.c
+++ b/tools/xentrace/xentrace.c
@@ -63,7 +63,7 @@ typedef struct settings_st {
} settings_t;
struct t_struct {
- struct t_info *t_info; /* Structure with information about individual buffers */
+ const struct t_info *t_info; /* Structure with information about individual buffers */
struct t_buf **meta; /* Pointers to trace buffer metadata */
unsigned char **data; /* Pointers to trace buffer data areas */
};
@@ -475,9 +475,8 @@ static struct t_struct *map_tbufs(unsigned long tbufs_mfn, unsigned int num,
int i;
/* Map t_info metadata structure */
- tbufs.t_info = xc_map_foreign_range(xc_handle, DOMID_XEN,
- tinfo_size, PROT_READ | PROT_WRITE,
- tbufs_mfn);
+ tbufs.t_info = xc_map_foreign_range(xc_handle, DOMID_XEN, tinfo_size,
+ PROT_READ, tbufs_mfn);
if ( tbufs.t_info == 0 )
{
@@ -503,7 +502,8 @@ static struct t_struct *map_tbufs(unsigned long tbufs_mfn, unsigned int num,
for(i=0; i<num; i++)
{
- uint32_t *mfn_list = ((uint32_t *)tbufs.t_info) + tbufs.t_info->mfn_offset[i];
+ const uint32_t *mfn_list = (const uint32_t *)tbufs.t_info
+ + tbufs.t_info->mfn_offset[i];
int j;
xen_pfn_t pfn_list[tbufs.t_info->tbuf_size];