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| author | Eric Auger <eric.auger@redhat.com> | 2020-10-29 10:33:02 +0100 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2020-11-03 19:06:22 +0000 |
| commit | f8fd3ebac358c187d0aba7f922450ed6addf41a8 (patch) | |
| tree | e55b27f32a77644035eb7f9439df3e82c238f4af /block/nvme.c | |
| parent | 2387aaced7209872238eaf594997009cffd5501d (diff) | |
| download | qemu-f8fd3ebac358c187d0aba7f922450ed6addf41a8.zip qemu-f8fd3ebac358c187d0aba7f922450ed6addf41a8.tar.gz qemu-f8fd3ebac358c187d0aba7f922450ed6addf41a8.tar.bz2 | |
block/nvme: Change size and alignment of prp_list_pages
In preparation of 64kB host page support, let's change the size
and alignment of the prp_list_pages so that the VFIO DMA MAP succeeds
with 64kB host page size. We align on the host page size.
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Eric Auger <eric.auger@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Tested-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20201029093306.1063879-22-philmd@redhat.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Tested-by: Eric Auger <eric.auger@redhat.com>
Diffstat (limited to 'block/nvme.c')
| -rw-r--r-- | block/nvme.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/block/nvme.c b/block/nvme.c index 4a8589d..e807dd5 100644 --- a/block/nvme.c +++ b/block/nvme.c @@ -215,6 +215,7 @@ static NVMeQueuePair *nvme_create_queue_pair(BDRVNVMeState *s, int i, r; NVMeQueuePair *q; uint64_t prp_list_iova; + size_t bytes; q = g_try_new0(NVMeQueuePair, 1); if (!q) { @@ -222,19 +223,19 @@ static NVMeQueuePair *nvme_create_queue_pair(BDRVNVMeState *s, } trace_nvme_create_queue_pair(idx, q, size, aio_context, event_notifier_get_fd(s->irq_notifier)); - q->prp_list_pages = qemu_try_memalign(s->page_size, - s->page_size * NVME_NUM_REQS); + bytes = QEMU_ALIGN_UP(s->page_size * NVME_NUM_REQS, + qemu_real_host_page_size); + q->prp_list_pages = qemu_try_memalign(qemu_real_host_page_size, bytes); if (!q->prp_list_pages) { goto fail; } - memset(q->prp_list_pages, 0, s->page_size * NVME_NUM_REQS); + memset(q->prp_list_pages, 0, bytes); qemu_mutex_init(&q->lock); q->s = s; q->index = idx; qemu_co_queue_init(&q->free_req_queue); q->completion_bh = aio_bh_new(aio_context, nvme_process_completion_bh, q); - r = qemu_vfio_dma_map(s->vfio, q->prp_list_pages, - s->page_size * NVME_NUM_REQS, + r = qemu_vfio_dma_map(s->vfio, q->prp_list_pages, bytes, false, &prp_list_iova); if (r) { goto fail; |