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[Qemu-devel] [PATCH] nvme: Fix get/set number of queues feature
From: |
alex |
Subject: |
[Qemu-devel] [PATCH] nvme: Fix get/set number of queues feature |
Date: |
Fri, 5 Dec 2014 14:40:24 +0200 |
From: Alex Friedman <address@hidden>
According to the specification, the low 16 bits should contain the number of
I/O submission queues, and the high 16 bits should contain the number of
I/O completion queues.
Signed-off-by: Alex Friedman <address@hidden>
---
hw/block/nvme.c | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/hw/block/nvme.c b/hw/block/nvme.c
index b6263dc..405cf4f 100644
--- a/hw/block/nvme.c
+++ b/hw/block/nvme.c
@@ -476,7 +476,8 @@ static uint16_t nvme_get_feature(NvmeCtrl *n, NvmeCmd *cmd,
NvmeRequest *req)
switch (dw10) {
case NVME_NUMBER_OF_QUEUES:
- req->cqe.result = cpu_to_le32(n->num_queues);
+ req->cqe.result =
+ cpu_to_le32((n->num_queues - 1) | ((n->num_queues - 1) << 16));
break;
default:
return NVME_INVALID_FIELD | NVME_DNR;
@@ -490,7 +491,8 @@ static uint16_t nvme_set_feature(NvmeCtrl *n, NvmeCmd *cmd,
NvmeRequest *req)
switch (dw10) {
case NVME_NUMBER_OF_QUEUES:
- req->cqe.result = cpu_to_le32(n->num_queues);
+ req->cqe.result =
+ cpu_to_le32((n->num_queues - 1) | ((n->num_queues - 1) << 16));
break;
default:
return NVME_INVALID_FIELD | NVME_DNR;
--
1.9.3
- [Qemu-devel] [PATCH] nvme: Fix get/set number of queues feature,
alex <=