[Qemu-devel] [PATCH v2 08/13] crypto: Audit for read/write 64-bit cleanness

[Eric Blake <eblake@redhat.com>]

The crypto read/write functions do their own fragmentation (because
everything has to go through a bounce buffer); while we could
advertise BLOCK_CRYPTO_MAX_IO_SIZE as our max_transfer (and let the
block layer do our fragmentation for us), I'm instead choosing to
document that this driver is 64-bit clean.

Signed-off-by: Eric Blake <eblake@redhat.com>
---
 block/crypto.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/block/crypto.c b/block/crypto.c
index 33ee01bebd9..259ef2649e1 100644
--- a/block/crypto.c
+++ b/block/crypto.c
@@ -453,6 +453,7 @@ static void block_crypto_refresh_limits(BlockDriverState *bs, Error **errp)
     BlockCrypto *crypto = bs->opaque;
     uint64_t sector_size = qcrypto_block_get_sector_size(crypto->block);
     bs->bl.request_alignment = sector_size; /* No sub-sector I/O */
+    bs->bl.max_transfer = INT64_MAX;
 }


-- 
2.17.2