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| author | Klaus Jensen | 2020-06-09 21:03:32 +0200 |
|---|---|---|
| committer | Kevin Wolf | 2020-06-17 14:53:40 +0200 |
| commit | 6a25a4b42e24df515e0e9a6b65683e500c66de73 (patch) | |
| tree | 3eb51f0adfc56c593398b97512a9e3b583a4dec9 /hw/block/nvme.h | |
| parent | hw/block/nvme: Verify msix_vector_use() returned value (diff) | |
| download | qemu-6a25a4b42e24df515e0e9a6b65683e500c66de73.tar.gz qemu-6a25a4b42e24df515e0e9a6b65683e500c66de73.tar.xz qemu-6a25a4b42e24df515e0e9a6b65683e500c66de73.zip | |
hw/block/nvme: add msix_qsize parameter
Decouple the requested maximum number of ioqpairs (param max_ioqpairs)
from the number of MSI-X interrupt vectors by introducing a new
msix_qsize parameter and initialize MSI-X with that. This allows
emulating a device that has fewer vectors than I/O queue pairs and also
allows more than 2048 queue pairs. To keep the device behaving as
previously, use a msix_qsize default of 65 (default max_ioqpairs + 1).
This decoupling was actually suggested by Maxim some time ago in a
slightly different context, so adding a Suggested-by.
Suggested-by: Maxim Levitsky <mlevitsk@redhat.com>
Signed-off-by: Klaus Jensen <k.jensen@samsung.com>
Message-Id: <20200609190333.59390-22-its@irrelevant.dk>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Diffstat (limited to 'hw/block/nvme.h')
| -rw-r--r-- | hw/block/nvme.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/hw/block/nvme.h b/hw/block/nvme.h index 61dd9b23b8..1d30c0bca2 100644 --- a/hw/block/nvme.h +++ b/hw/block/nvme.h @@ -7,6 +7,7 @@ typedef struct NvmeParams { char *serial; uint32_t num_queues; /* deprecated since 5.1 */ uint32_t max_ioqpairs; + uint16_t msix_qsize; uint32_t cmb_size_mb; } NvmeParams; |