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nvme: change nvme_passthru_cmd64 to explicitly mark rsvd

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Changing nvme_passthru_cmd64 to add a field: rsvd2. This field is an explicit
marker for the padding space added on certain platforms as a result of the
enlargement of the result field from 32 bit to 64 bits in size, and
fixes differences in struct size when using compat ioctl for 32-bit
binaries on 64-bit architecture.

Fixes: 65e68edce0 ("nvme: allow 64-bit results in passthru commands")
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Charles Machalow <csm10495@gmail.com>
[changelog]
Signed-off-by: Keith Busch <kbusch@kernel.org>
This commit is contained in:
Charles Machalow 2019-11-04 22:15:10 -08:00 committed by Keith Busch
parent 763303a83a
commit 0d6eeb1fd6
1 changed files with 1 additions and 0 deletions
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include/uapi/linux/nvme_ioctl.h
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@ -63,6 +63,7 @@ struct nvme_passthru_cmd64 {
__u32 cdw14;
__u32 cdw15;
__u32 timeout_ms;
__u32 rsvd2;
__u64 result;
};