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| author | Klaus Jensen <k.jensen@samsung.com> | 2020-07-06 08:12:55 +0200 |
|---|---|---|
| committer | Klaus Jensen <k.jensen@samsung.com> | 2020-09-02 08:48:50 +0200 |
| commit | d21d37f5ab8c439ea183d8b04c469823d3b0b5ef (patch) | |
| tree | 38604fc9e36a5c8604014745275d84a7654c7a67 | |
| parent | 46ac29c38bb45184db71dfbfbf5a31b3c12dbe29 (diff) | |
| download | focaccia-qemu-d21d37f5ab8c439ea183d8b04c469823d3b0b5ef.tar.gz focaccia-qemu-d21d37f5ab8c439ea183d8b04c469823d3b0b5ef.zip | |
hw/block/nvme: flush write cache when disabled
If the write cache is disabled with a Set Features command, flush it if currently enabled. Signed-off-by: Klaus Jensen <k.jensen@samsung.com> Reviewed-by: Dmitry Fomichev <dmitry.fomichev@wdc.com> Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com> Message-Id: <20200706061303.246057-11-its@irrelevant.dk>
| -rw-r--r-- | hw/block/nvme.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/hw/block/nvme.c b/hw/block/nvme.c index 41a15da3f6..298b250199 100644 --- a/hw/block/nvme.c +++ b/hw/block/nvme.c @@ -1181,6 +1181,10 @@ static uint16_t nvme_set_feature(NvmeCtrl *n, NvmeCmd *cmd, NvmeRequest *req) break; case NVME_VOLATILE_WRITE_CACHE: + if (!(dw11 & 0x1) && blk_enable_write_cache(n->conf.blk)) { + blk_flush(n->conf.blk); + } + blk_set_enable_write_cache(n->conf.blk, dw11 & 1); break; case NVME_NUMBER_OF_QUEUES: |