linux.git/arch/s390/hypfs, branch master

[tree-wide] finally take no_llseek out

2024-09-27T15:18:43+00:00

no_llseek had been defined to NULL two years ago, in commit 868941b14441
("fs: remove no_llseek")

To quote that commit,

  At -rc1 we'll need do a mechanical removal of no_llseek -

  git grep -l -w no_llseek | grep -v porting.rst | while read i; do
	sed -i '/\/d' $i
  done

  would do it.

Unfortunately, that hadn't been done.  Linus, could you do that now, so
that we could finally put that thing to rest? All instances are of the
form
	.llseek = no_llseek,
so it's obviously safe.

Signed-off-by: Al Viro 
Signed-off-by: Linus Torvalds

s390/hypfs: Remove obsoleted declaration for hypfs_dbfs_exit

2024-08-29T20:56:34+00:00

The hypfs_dbfs_exit() have been removed since
commit 3325b4d85799 ("s390/hypfs: factor out filesystem code"),
and now it is useless, so remove it.

Signed-off-by: Gaosheng Cui 
Acked-by: Vasily Gorbik 
Signed-off-by: Vasily Gorbik

s390/hypfs_diag: Remove unused dentry variable

2024-08-29T20:56:33+00:00

Remove leftover dentry variable after hypfs refactoring.

Before 2fcb3686e160, hypfs_diag.c and other hypfs files were using
debugfs_create_file() explicitly for creating debugfs files and
were storing the returned pointer.

After the refactor, common debugfs file operations and also the
related dentry pointers have been moved into hypfs_dbfs.c and
redefined as new common mechanisms.
Therefore the dentry variable and the debugfs_remove() function
calls in hypfs_diag.c are now redundant.

Current code is not effected since the dentry pointer in
hypfs_diag is implicitly assigned to NULL and debugfs_remove()
returns without an error if the passed pointer is NULL.

Acked-by: Alexander Gordeev 
Signed-off-by: Mete Durlu 
Signed-off-by: Vasily Gorbik

s390/hypfs_diag: Diag204 busy loop

2024-07-10T17:50:45+00:00

When diag204 busy-indiciation facility is installed and diag204 is
returning busy, hypfs diag204 handler now does an interruptable busy
wait until diag204 is no longer busy. If there is a signal pending, call
would be restarted with -ERESTARTSYSCALL, except for fatal signals.

Acked-by: Heiko Carstens 
Reviewed-by: Tobias Huschle 
Signed-off-by: Mete Durlu 
Signed-off-by: Vasily Gorbik

s390/hypfs_sprp: remove unneeded DMA zone allocation

2024-02-09T12:58:14+00:00

Remove GFP_DMA flag when allocating memory to be used for diagnose 304.
Diagnose 304 can access memory beyond the DMA zone.

Suggested-by: Alexander Gordeev 
Reviewed-by: Alexander Gordeev 
Signed-off-by: Heiko Carstens

s390/hypfs_diag0c: fix virtual vs physical address confusion

2024-02-09T12:58:13+00:00

Add missing virt_to_phys() translation to diag0c(). This doesn't fix a
bug since virtual and physical addresses are currently the same.

Reviewed-by: Alexander Gordeev 
Signed-off-by: Heiko Carstens

s390/hypfs_sprp: fix virtual vs physical address confusion

2024-02-09T12:58:13+00:00

Add missing virt_to_phys() translation to __hypfs_sprp_diag304().
This doesn't fix a bug since virtual and physical addresses are
currently the same.

Reviewed-by: Alexander Gordeev 
Signed-off-by: Heiko Carstens

hypfs: convert to new timestamp accessors

2023-10-18T11:26:15+00:00

Convert to using the new inode timestamp accessor functions.

Signed-off-by: Jeff Layton 
Link: https://lore.kernel.org/r/20231004185347.80880-2-jlayton@kernel.org
Signed-off-by: Christian Brauner

Merge tag 's390-6.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

2023-08-29T00:22:39+00:00

Pull s390 updates from Heiko Carstens:

 - Add vfio-ap support to pass-through crypto devices to secure
   execution guests

 - Add API ordinal 6 support to zcrypt_ep11misc device drive, which is
   required to handle key generate and key derive (e.g. secure key to
   protected key) correctly

 - Add missing secure/has_secure sysfs files for the case where it is
   not possible to figure where a system has been booted from. Existing
   user space relies on that these files are always present

 - Fix DCSS block device driver list corruption, caused by incorrect
   error handling

 - Convert virt_to_pfn() and pfn_to_virt() from defines to static inline
   functions to enforce type checking

 - Cleanups, improvements, and minor fixes to the kernel mapping setup

 - Fix various virtual vs physical address confusions

 - Move pfault code to separate file, since it has nothing to do with
   regular fault handling

 - Move s390 documentation to Documentation/arch/ like it has been done
   for other architectures already

 - Add HAVE_FUNCTION_GRAPH_RETVAL support

 - Factor out the s390_hypfs filesystem and add a new config option for
   it. The filesystem is deprecated and as soon as all users are gone it
   can be removed some time in the not so near future

 - Remove support for old CEX2 and CEX3 crypto cards from zcrypt device
   driver

 - Add support for user-defined certificates: receive user-defined
   certificates with a diagnose call and provide them via 'cert_store'
   keyring to user space

 - Couple of other small fixes and improvements all over the place

* tag 's390-6.6-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (66 commits)
  s390/pci: use builtin_misc_device macro to simplify the code
  s390/vfio-ap: make sure nib is shared
  KVM: s390: export kvm_s390_pv*_is_protected functions
  s390/uv: export uv_pin_shared for direct usage
  s390/vfio-ap: check for TAPQ response codes 0x35 and 0x36
  s390/vfio-ap: handle queue state change in progress on reset
  s390/vfio-ap: use work struct to verify queue reset
  s390/vfio-ap: store entire AP queue status word with the queue object
  s390/vfio-ap: remove upper limit on wait for queue reset to complete
  s390/vfio-ap: allow deconfigured queue to be passed through to a guest
  s390/vfio-ap: wait for response code 05 to clear on queue reset
  s390/vfio-ap: clean up irq resources if possible
  s390/vfio-ap: no need to check the 'E' and 'I' bits in APQSW after TAPQ
  s390/ipl: refactor deprecated strncpy
  s390/ipl: fix virtual vs physical address confusion
  s390/zcrypt_ep11misc: support API ordinal 6 with empty pin-blob
  s390/paes: fix PKEY_TYPE_EP11_AES handling for secure keyblobs
  s390/pkey: fix PKEY_TYPE_EP11_AES handling for sysfs attributes
  s390/pkey: fix PKEY_TYPE_EP11_AES handling in PKEY_VERIFYKEY2 IOCTL
  s390/pkey: fix PKEY_TYPE_EP11_AES handling in PKEY_KBLOB2PROTK[23]
  ...

s390/hypfs: stop using ENOSYS error code

2023-07-24T10:12:24+00:00

ENOSYS should only be returned to userspace when a syscall
is not implemented. The only known user, 'hyptop' is not explicitely
checking for -ENOSYS, therefore use EOPNOTSUPP instead. It is very
unlikely that there are other users, so this change should have no
impact on userspace.

Signed-off-by: Sven Schnelle 
Acked-by: Heiko Carstens 
Signed-off-by: Heiko Carstens