tree ea4c4a427a4c31bc4071833922e5fdcf2483bd72
parent 24f5bb9f24ad80da6c6f83ba6124b5188c5384b2
parent 64c3431808bdab2ccef97d7a444018c416b080b5
author Linus Torvalds <torvalds@linux-foundation.org> 1710873507 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1710873507 -0700
mergetag object 64c3431808bdab2ccef97d7a444018c416b080b5
 type commit
 tag s390-6.9-2
 tagger Heiko Carstens <hca@linux.ibm.com> 1710855292 +0100
 
 more s390 updates for 6.9 merge window
 
 - Various virtual vs physical address usage fixes
 
 - Add new bitwise types and helper functions and use them in s390 specific
   drivers and code to make it easier to find virtual vs physical address
   usage bugs. Right now virtual and physical addresses are identical for
   s390, except for module, vmalloc, and similar areas. This will be
   changed, hopefully with the next merge window, so that e.g. the kernel
   image and modules will be located close to each other, allowing for
   direct branches and also for some other simplifications.
 
   As a prerequisite this requires to fix all misuses of virtual and
   physical addresses. As it turned out people are so used to the concept
   that virtual and physical addresses are the same, that new bugs got added
   to code which was already fixed. In order to avoid that even more code
   gets merged which adds such bugs add and use new bitwise types, so that
   sparse can be used to find such usage bugs.
 
   Most likely the new types can go away again after some time
 
 - Provide a simple ARCH_HAS_DEBUG_VIRTUAL implementation
 
 - Fix kprobe branch handling: if an out-of-line single stepped relative
   branch instruction has a target address within a certain address area in
   the entry code, the program check handler may incorrectly execute cleanup
   code as if KVM code was executed, leading to crashes
 
 - Fix reference counting of zcrypt card objects
 
 - Various other small fixes and cleanups
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Merge tag 's390-6.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull more s390 updates from Heiko Carstens:

 - Various virtual vs physical address usage fixes

 - Add new bitwise types and helper functions and use them in s390
   specific drivers and code to make it easier to find virtual vs
   physical address usage bugs.

   Right now virtual and physical addresses are identical for s390,
   except for module, vmalloc, and similar areas. This will be changed,
   hopefully with the next merge window, so that e.g. the kernel image
   and modules will be located close to each other, allowing for direct
   branches and also for some other simplifications.

   As a prerequisite this requires to fix all misuses of virtual and
   physical addresses. As it turned out people are so used to the
   concept that virtual and physical addresses are the same, that new
   bugs got added to code which was already fixed. In order to avoid
   that even more code gets merged which adds such bugs add and use new
   bitwise types, so that sparse can be used to find such usage bugs.

   Most likely the new types can go away again after some time

 - Provide a simple ARCH_HAS_DEBUG_VIRTUAL implementation

 - Fix kprobe branch handling: if an out-of-line single stepped relative
   branch instruction has a target address within a certain address area
   in the entry code, the program check handler may incorrectly execute
   cleanup code as if KVM code was executed, leading to crashes

 - Fix reference counting of zcrypt card objects

 - Various other small fixes and cleanups

* tag 's390-6.9-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (41 commits)
  s390/entry: compare gmap asce to determine guest/host fault
  s390/entry: remove OUTSIDE macro
  s390/entry: add CIF_SIE flag and remove sie64a() address check
  s390/cio: use while (i--) pattern to clean up
  s390/raw3270: make class3270 constant
  s390/raw3270: improve raw3270_init() readability
  s390/tape: make tape_class constant
  s390/vmlogrdr: make vmlogrdr_class constant
  s390/vmur: make vmur_class constant
  s390/zcrypt: make zcrypt_class constant
  s390/mm: provide simple ARCH_HAS_DEBUG_VIRTUAL support
  s390/vfio_ccw_cp: use new address translation helpers
  s390/iucv: use new address translation helpers
  s390/ctcm: use new address translation helpers
  s390/lcs: use new address translation helpers
  s390/qeth: use new address translation helpers
  s390/zfcp: use new address translation helpers
  s390/tape: fix virtual vs physical address confusion
  s390/3270: use new address translation helpers
  s390/3215: use new address translation helpers
  ...