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[PATCH] hw/block/nvme: Simplify timestamp sum
From: |
Philippe Mathieu-Daudé |
Subject: |
[PATCH] hw/block/nvme: Simplify timestamp sum |
Date: |
Fri, 2 Oct 2020 09:57:16 +0200 |
As the 'timestamp' variable is declared as a 48-bit bitfield,
we do not need to wrap the sum result.
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
---
hw/block/nvme.c | 7 +------
1 file changed, 1 insertion(+), 6 deletions(-)
diff --git a/hw/block/nvme.c b/hw/block/nvme.c
index 63078f6009..44fa5b9076 100644
--- a/hw/block/nvme.c
+++ b/hw/block/nvme.c
@@ -1280,12 +1280,7 @@ static inline uint64_t nvme_get_timestamp(const NvmeCtrl
*n)
union nvme_timestamp ts;
ts.all = 0;
-
- /*
- * If the sum of the Timestamp value set by the host and the elapsed
- * time exceeds 2^48, the value returned should be reduced modulo 2^48.
- */
- ts.timestamp = (n->host_timestamp + elapsed_time) & 0xffffffffffff;
+ ts.timestamp = n->host_timestamp + elapsed_time;
/* If the host timestamp is non-zero, set the timestamp origin */
ts.origin = n->host_timestamp ? 0x01 : 0x00;
--
2.26.2
- [PATCH] hw/block/nvme: Simplify timestamp sum,
Philippe Mathieu-Daudé <=