From: Samuel Liao <samuell...@tencent.com>
commit fbe06b7bae7c9cf6ab05168fce5ee93b2f4bae7c broken the mtrr_cleanup
due to return incorrect merged range. this patch remove the empty range
by swapping with the last.
Error messages:
Jun 9 14:06:18 kernel: [ 0.000000] *BAD*gran_size: 64K chunk_size: 64K
num_reg: 4 lose cover RAM: -0G
Jun 9 14:06:18 kernel: [ 0.000000] *BAD*gran_size: 64K chunk_size: 128K
num_reg: 4 lose cover RAM: -0G
Jun 9 14:06:18 kernel: [ 0.000000] *BAD*gran_size: 64K chunk_size: 256K
num_reg: 4 lose cover RAM: -0G
Jun 9 14:06:18 kernel: [ 0.000000] *BAD*gran_size: 64K chunk_size: 512K
num_reg: 4 lose cover RAM: -0G
Signed-off-by: Samuel Liao <samuell...@tencent.com>
---
kernel/range.c | 15 ++++++++++----
1 file changed, 11 insertions(+), 4 deletions(-)
diff --git a/kernel/range.c b/kernel/range.c
index eb911db..b723697 100644
--- a/kernel/range.c
+++ b/kernel/range.c
@@ -48,11 +48,18 @@ int add_range_with_merge(struct range *range, int az, int
nr_range,
final_start = min(range[i].start, start);
final_end = max(range[i].end, end);
+ if (final_start == range[i].start && final_end == range[i].end)
+ return nr_range;
+
/* clear it and add it back for further merge */
- range[i].start = 0;
- range[i].end = 0;
- return add_range_with_merge(range, az, nr_range,
- final_start, final_end);
+ nr_range -= 1;
+ if (i != nr_range) {
+ range[i].start = range[nr_range].start;
+ range[i].end = range[nr_range].end;
+ }
+ range[nr_range].start = 0;
+ range[nr_range].end = 0;
+ i = -1;
}
/* Need to add it: */
--
1.8.2.1
--
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