Commit Graph

5 Commits

Author SHA1 Message Date
Linus Torvalds
ad0bf4eb91 s390 updates for the 5.7 merge window
- Update maintainers. Niklas Schnelle takes over zpci and Vineeth Vijayan
   common io code.
 
 - Extend cpuinfo to include topology information.
 
 - Add new extended counters for IBM z15 and sampling buffer allocation
   rework in perf code.
 
 - Add control over zeroing out memory during system restart.
 
 - CCA protected key block version 2 support and other fixes/improvements
   in crypto code.
 
 - Convert to new fallthrough; annotations.
 
 - Replace zero-length arrays with flexible-arrays.
 
 - QDIO debugfs and other small improvements.
 
 - Drop 2-level paging support optimization for compat tasks. Varios
   mm cleanups.
 
 - Remove broken and unused hibernate / power management support.
 
 - Remove fake numa support which does not bring any benefits.
 
 - Exclude offline CPUs from CPU topology masks to be more consistent
   with other architectures.
 
 - Prevent last branching instruction address leaking to userspace.
 
 - Other small various fixes and improvements all over the code.
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Merge tag 's390-5.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 updates from Vasily Gorbik:

 - Update maintainers. Niklas Schnelle takes over zpci and Vineeth
   Vijayan common io code.

 - Extend cpuinfo to include topology information.

 - Add new extended counters for IBM z15 and sampling buffer allocation
   rework in perf code.

 - Add control over zeroing out memory during system restart.

 - CCA protected key block version 2 support and other
   fixes/improvements in crypto code.

 - Convert to new fallthrough; annotations.

 - Replace zero-length arrays with flexible-arrays.

 - QDIO debugfs and other small improvements.

 - Drop 2-level paging support optimization for compat tasks. Varios mm
   cleanups.

 - Remove broken and unused hibernate / power management support.

 - Remove fake numa support which does not bring any benefits.

 - Exclude offline CPUs from CPU topology masks to be more consistent
   with other architectures.

 - Prevent last branching instruction address leaking to userspace.

 - Other small various fixes and improvements all over the code.

* tag 's390-5.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (57 commits)
  s390/mm: cleanup init_new_context() callback
  s390/mm: cleanup virtual memory constants usage
  s390/mm: remove page table downgrade support
  s390/qdio: set qdio_irq->cdev at allocation time
  s390/qdio: remove unused function declarations
  s390/ccwgroup: remove pm support
  s390/ap: remove power management code from ap bus and drivers
  s390/zcrypt: use kvmalloc instead of kmalloc for 256k alloc
  s390/mm: cleanup arch_get_unmapped_area() and friends
  s390/ism: remove pm support
  s390/cio: use fallthrough;
  s390/vfio: use fallthrough;
  s390/zcrypt: use fallthrough;
  s390: use fallthrough;
  s390/cpum_sf: Fix wrong page count in error message
  s390/diag: fix display of diagnose call statistics
  s390/ap: Remove ap device suspend and resume callbacks
  s390/pci: Improve handling of unset UID
  s390/pci: Fix zpci_alloc_domain() over allocation
  s390/qdio: pass ISC as parameter to chsc_sadc()
  ...
2020-04-04 09:45:50 -07:00
Harald Freudenberger
34515df25d s390/zcrypt: use kvmalloc instead of kmalloc for 256k alloc
Tests showed that it may happen that a 256k kmalloc may fail
due to a temporary shortage on 256k slab entries.

The find functions for cca and ep11 use a 256k array to fetch the
states of all possible crypto cards and their domains in one
piece. With the patch now kvmalloc is used to allocate this
temporary memory as there is no need to have this memory area
physical continuously.

Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2020-03-27 10:22:47 +01:00
Geert Uytterhoeven
05ccaca003 s390/pkey/zcrypt: spelling s/crytp/crypt/
Fix typos in a comments.

Link: https://lkml.kernel.org/r/20200212084622.9219-1-geert+renesas@glider.be
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2020-02-17 18:01:57 +01:00
Harald Freudenberger
55d0a513a0 s390/pkey/zcrypt: Support EP11 AES secure keys
Extend the low level ep11 misc functions implementation by
several functions to support EP11 key objects for paes and pkey:
- EP11 AES secure key generation
- EP11 AES secure key generation from given clear key value
- EP11 AES secure key blob check
- findcard function returns list of apqns based on given criterias
- EP11 AES secure key derive to CPACF protected key

Extend the pkey module to be able to generate and handle EP11
secure keys and also use them as base for deriving protected
keys for CPACF usage. These ioctls are extended to support
EP11 keys: PKEY_GENSECK2, PKEY_CLR2SECK2, PKEY_VERIFYKEY2,
PKEY_APQNS4K, PKEY_APQNS4KT, PKEY_KBLOB2PROTK2.

Additionally the 'clear key' token to protected key now uses
an EP11 card if the other ways (via PCKMO, via CCA) fail.

The PAES cipher implementation needed a new upper limit for
the max key size, but is now also working with EP11 keys.

Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2020-01-30 13:07:56 +01:00
Harald Freudenberger
7384eb725e s390/zcrypt: add new low level ep11 functions support file
This patch introduces two new files which provide some
low level functions to interact with EP11 crypto cards:

ep11_get_card_info() sends an EP11 query module info CPRB to the
  addressed card, processes the returning reply and exposes some of
  the information returned in the new ep11_card_info struct.

ep11_get_domain_info() sends an EP11 query domain info CPRB to the
  addressed card/queue, processes the returning reply and exposes some
  of the information returned in the new ep11_domain_info struct.

Signed-off-by: Harald Freudenberger <freude@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
2020-01-30 13:07:55 +01:00