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| author |  Harald Freudenberger <freude@linux.ibm.com>
| 2020-09-15 17:01:58 +0200 |
|---|---|---|
| committer |  Vasily Gorbik <gor@linux.ibm.com>
| 2020-09-17 14:11:03 +0200 |
| commit | 52f72feba9dbe4fac848ae0d90bc0b85b17f91bc (patch) | |
| tree | cd865598198e7b09a7ed99196062689700f43d60 /drivers/s390/crypto/ap_debug.h | |
| parent | s390/kasan: support protvirt with 4-level paging (diff) | |
| download | linux-52f72feba9dbe4fac848ae0d90bc0b85b17f91bc.tar.gz linux-52f72feba9dbe4fac848ae0d90bc0b85b17f91bc.tar.bz2 linux-52f72feba9dbe4fac848ae0d90bc0b85b17f91bc.zip | |
s390/zcrypt: remove set_fs() invocation in zcrypt device driver
This patch reworks the zcrypt device driver so that the set_fs()
invocation is not needed any more. Instead there is a new flag bool
userspace passed through all the functions which tells if the pointer
arguments are userspace or kernelspace. Together with the two new
inline functions z_copy_from_user() and z_copy_to_user() which either
invoke copy_from_user (userspace is true) or memcpy (userspace is
false) the zcrypt dd and the AP bus now has no requirement for
the set_fs() functionality any more.
Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Reviewed-by: Ingo Franzki <ifranzki@linux.ibm.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'drivers/s390/crypto/ap_debug.h')
0 files changed, 0 insertions, 0 deletions