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[RFC 3/5] block/nvme: Change size and alignment of queue
From: |
Eric Auger |
Subject: |
[RFC 3/5] block/nvme: Change size and alignment of queue |
Date: |
Thu, 15 Oct 2020 13:52:50 +0200 |
In preparation of 64kB host page support, let's change the size
and alignment of the queue so that the VFIO DMA MAP succeeds.
We align on the host page size.
Signed-off-by: Eric Auger <eric.auger@redhat.com>
---
block/nvme.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/block/nvme.c b/block/nvme.c
index 088ff1825a..cf8ec200af 100644
--- a/block/nvme.c
+++ b/block/nvme.c
@@ -164,9 +164,9 @@ static void nvme_init_queue(BDRVNVMeState *s, NVMeQueue *q,
size_t bytes;
int r;
- bytes = ROUND_UP(nentries * entry_bytes, s->page_size);
+ bytes = ROUND_UP(nentries * entry_bytes, qemu_real_host_page_size);
q->head = q->tail = 0;
- q->queue = qemu_try_memalign(s->page_size, bytes);
+ q->queue = qemu_try_memalign(qemu_real_host_page_size, bytes);
if (!q->queue) {
error_setg(errp, "Cannot allocate queue");
return;
--
2.21.3
[RFC 2/5] block/nvme: Change size and alignment of IDENTIFY response buffer, Eric Auger, 2020/10/15
[RFC 3/5] block/nvme: Change size and alignment of queue,
Eric Auger <=
[RFC 4/5] block/nvme: Change size and alignment of prp_list_pages, Eric Auger, 2020/10/15
[RFC 5/5] block/nvme: Align iov's va and size on host page size, Eric Auger, 2020/10/15
Re: [RFC 0/5] NVMe passthrough: Support 64kB page host, Philippe Mathieu-Daudé, 2020/10/15