linux.git/arch/s390/include/uapi/asm, branch v6.5

s390/ptrace: add missing linux/const.h include

2023-08-01T14:47:03+00:00

Adrian Reber reported the following CRIU build bug after
commit b8af5999779d ("s390/ptrace: make all psw related
defines also available for asm"):

compel/arch/s390/src/lib/infect.c: In function 'arch_can_dump_task':
compel/arch/s390/src/lib/infect.c:523:25: error: 'UL' undeclared (first use in this function)
  523 |         if (psw->mask & PSW_MASK_RI) {
      |                         ^~~~~~~~~~~

Add the missing linux/const.h include to fix this.

Reported-by: Adrian Reber 
Closes: https://bugzilla.redhat.com/show_bug.cgi?id=2225745
Link: https://github.com/checkpoint-restore/criu/pull/2232
Tested-by: Adrian Reber 
Fixes: b8af5999779d ("s390/ptrace: make all psw related defines also available for asm")
Link: https://lore.kernel.org/r/20230731183926.330932-1-hca@linux.ibm.com
Signed-off-by: Heiko Carstens

Merge tag 's390-6.5-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

2023-07-06T20:18:30+00:00

Pull more s390 updates from Alexander Gordeev:

 - Fix virtual vs physical address confusion in vmem_add_range() and
   vmem_remove_range() functions

 - Include  instead of  and 
   throughout s390 code

 - Make all PSW related defines also available for assembler files.
   Remove PSW_DEFAULT_KEY define from uapi for that

 - When adding an undefined symbol the build still succeeds, but
   userspace crashes trying to execute VDSO, because the symbol is not
   resolved. Add undefined symbols check to prevent that

 - Use kvmalloc_array() instead of kzalloc() for allocaton of 256k
   memory when executing s390 crypto adapter IOCTL

 - Add -fPIE flag to prevent decompressor misaligned symbol build error
   with clang

 - Use .balign instead of .align everywhere. This is a no-op for s390,
   but with this there no mix in using .align and .balign anymore

 - Filter out -mno-pic-data-is-text-relative flag when compiling kernel
   to prevent VDSO build error

 - Rework entering of DAT-on mode on CPU restart to use PSW_KERNEL_BITS
   mask directly

 - Do not retry administrative requests to some s390 crypto cards, since
   the firmware assumes replay attacks

 - Remove most of the debug code, which is build in when kernel config
   option CONFIG_ZCRYPT_DEBUG is enabled

 - Remove CONFIG_ZCRYPT_MULTIDEVNODES kernel config option and switch
   off the multiple devices support for the s390 zcrypt device driver

 - With the conversion to generic entry machine checks are accounted to
   the current context instead of irq time. As result, the STCKF
   instruction at the beginning of the machine check handler and the
   lowcore member are no longer required, therefore remove it

 - Fix various typos found with codespell

 - Minor cleanups to CPU-measurement Counter and Sampling Facilities
   code

 - Revert patch that removes VMEM_MAX_PHYS macro, since it causes a
   regression

* tag 's390-6.5-2' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (25 commits)
  Revert "s390/mm: get rid of VMEM_MAX_PHYS macro"
  s390/cpum_sf: remove check on CPU being online
  s390/cpum_sf: handle casts consistently
  s390/cpum_sf: remove unnecessary debug statement
  s390/cpum_sf: remove parameter in call to pr_err
  s390/cpum_sf: simplify function setup_pmu_cpu
  s390/cpum_cf: remove unneeded debug statements
  s390/entry: remove mcck clock
  s390: fix various typos
  s390/zcrypt: remove ZCRYPT_MULTIDEVNODES kernel config option
  s390/zcrypt: do not retry administrative requests
  s390/zcrypt: cleanup some debug code
  s390/entry: rework entering DAT-on mode on CPU restart
  s390/mm: fence off VM macros from asm and linker
  s390: include linux/io.h instead of asm/io.h
  s390/ptrace: make all psw related defines also available for asm
  s390/ptrace: remove PSW_DEFAULT_KEY from uapi
  s390/vdso: filter out mno-pic-data-is-text-relative cflag
  s390: consistently use .balign instead of .align
  s390/decompressor: fix misaligned symbol build error
  ...

Merge tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm

2023-07-03T22:32:22+00:00

Pull kvm updates from Paolo Bonzini:
 "ARM64:

   - Eager page splitting optimization for dirty logging, optionally
     allowing for a VM to avoid the cost of hugepage splitting in the
     stage-2 fault path.

   - Arm FF-A proxy for pKVM, allowing a pKVM host to safely interact
     with services that live in the Secure world. pKVM intervenes on
     FF-A calls to guarantee the host doesn't misuse memory donated to
     the hyp or a pKVM guest.

   - Support for running the split hypervisor with VHE enabled, known as
     'hVHE' mode. This is extremely useful for testing the split
     hypervisor on VHE-only systems, and paves the way for new use cases
     that depend on having two TTBRs available at EL2.

   - Generalized framework for configurable ID registers from userspace.
     KVM/arm64 currently prevents arbitrary CPU feature set
     configuration from userspace, but the intent is to relax this
     limitation and allow userspace to select a feature set consistent
     with the CPU.

   - Enable the use of Branch Target Identification (FEAT_BTI) in the
     hypervisor.

   - Use a separate set of pointer authentication keys for the
     hypervisor when running in protected mode, as the host is untrusted
     at runtime.

   - Ensure timer IRQs are consistently released in the init failure
     paths.

   - Avoid trapping CTR_EL0 on systems with Enhanced Virtualization
     Traps (FEAT_EVT), as it is a register commonly read from userspace.

   - Erratum workaround for the upcoming AmpereOne part, which has
     broken hardware A/D state management.

  RISC-V:

   - Redirect AMO load/store misaligned traps to KVM guest

   - Trap-n-emulate AIA in-kernel irqchip for KVM guest

   - Svnapot support for KVM Guest

  s390:

   - New uvdevice secret API

   - CMM selftest and fixes

   - fix racy access to target CPU for diag 9c

  x86:

   - Fix missing/incorrect #GP checks on ENCLS

   - Use standard mmu_notifier hooks for handling APIC access page

   - Drop now unnecessary TR/TSS load after VM-Exit on AMD

   - Print more descriptive information about the status of SEV and
     SEV-ES during module load

   - Add a test for splitting and reconstituting hugepages during and
     after dirty logging

   - Add support for CPU pinning in demand paging test

   - Add support for AMD PerfMonV2, with a variety of cleanups and minor
     fixes included along the way

   - Add a "nx_huge_pages=never" option to effectively avoid creating NX
     hugepage recovery threads (because nx_huge_pages=off can be toggled
     at runtime)

   - Move handling of PAT out of MTRR code and dedup SVM+VMX code

   - Fix output of PIC poll command emulation when there's an interrupt

   - Add a maintainer's handbook to document KVM x86 processes,
     preferred coding style, testing expectations, etc.

   - Misc cleanups, fixes and comments

  Generic:

   - Miscellaneous bugfixes and cleanups

  Selftests:

   - Generate dependency files so that partial rebuilds work as
     expected"

* tag 'for-linus' of git://git.kernel.org/pub/scm/virt/kvm/kvm: (153 commits)
  Documentation/process: Add a maintainer handbook for KVM x86
  Documentation/process: Add a label for the tip tree handbook's coding style
  KVM: arm64: Fix misuse of KVM_ARM_VCPU_POWER_OFF bit index
  RISC-V: KVM: Remove unneeded semicolon
  RISC-V: KVM: Allow Svnapot extension for Guest/VM
  riscv: kvm: define vcpu_sbi_ext_pmu in header
  RISC-V: KVM: Expose IMSIC registers as attributes of AIA irqchip
  RISC-V: KVM: Add in-kernel virtualization of AIA IMSIC
  RISC-V: KVM: Expose APLIC registers as attributes of AIA irqchip
  RISC-V: KVM: Add in-kernel emulation of AIA APLIC
  RISC-V: KVM: Implement device interface for AIA irqchip
  RISC-V: KVM: Skeletal in-kernel AIA irqchip support
  RISC-V: KVM: Set kvm_riscv_aia_nr_hgei to zero
  RISC-V: KVM: Add APLIC related defines
  RISC-V: KVM: Add IMSIC related defines
  RISC-V: KVM: Implement guest external interrupt line management
  KVM: x86: Remove PRIx* definitions as they are solely for user space
  s390/uv: Update query for secret-UVCs
  s390/uv: replace scnprintf with sysfs_emit
  s390/uvdevice: Add 'Lock Secret Store' UVC
  ...

s390: fix various typos

2023-07-03T09:19:42+00:00

Fix various typos found with codespell.

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

s390/ptrace: make all psw related defines also available for asm

2023-07-03T09:19:39+00:00

Use the _AC() macro to make all psw related defines also available for
assembler files.

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

s390/ptrace: remove PSW_DEFAULT_KEY from uapi

2023-07-03T09:19:39+00:00

Move PSW_DEFAULT_KEY from uapi/asm/ptrace.h to asm/ptrace.h. This is
possible, since it depends on PAGE_DEFAULT_ACC which is not part of
uapi. Or in other words: this define cannot be used without error.

Therefore remove it from uapi.

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

Merge tag 'kvm-s390-next-6.5-1' of https://git.kernel.org/pub/scm/linux/kernel/git/kvms390/linux into HEAD

2023-07-01T11:00:11+00:00

* New uvdevice secret API
* New CMM selftest
* cmm fix
* diag 9c racy access of target cpu fix

Merge tag 's390-6.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

2023-06-27T22:49:10+00:00

Pull s390 updates from Alexander Gordeev:

 - Fix the style of protected key API driver source: use x-mas tree for
   all local variable declarations

 - Rework protected key API driver to not use the struct pkey_protkey
   and pkey_clrkey anymore. Both structures have a fixed size buffer,
   but with the support of ECC protected key these buffers are not big
   enough. Use dynamic buffers internally and transparently for
   userspace

 - Add support for a new 'non CCA clear key token' with ECC clear keys
   supported: ECC P256, ECC P384, ECC P521, ECC ED25519 and ECC ED448.
   This makes it possible to derive a protected key from the ECC clear
   key input via PKEY_KBLOB2PROTK3 ioctl, while currently the only way
   to derive is via PCKMO instruction

 - The s390 PMU of PAI crypto and extension 1 NNPA counters use atomic_t
   for reference counting. Replace this with the proper data type
   refcount_t

 - Select ARCH_SUPPORTS_INT128, but limit this to clang for now, since
   gcc generates inefficient code, which may lead to stack overflows

 - Replace one-element array with flexible-array member in struct
   vfio_ccw_parent and refactor the rest of the code accordingly. Also,
   prefer struct_size() over sizeof() open- coded versions

 - Introduce OS_INFO_FLAGS_ENTRY pointing to a flags field and
   OS_INFO_FLAG_REIPL_CLEAR flag that informs a dumper whether the
   system memory should be cleared or not once dumped

 - Fix a hang when a user attempts to remove a VFIO-AP mediated device
   attached to a guest: add VFIO_DEVICE_GET_IRQ_INFO and
   VFIO_DEVICE_SET_IRQS IOCTLs and wire up the VFIO bus driver callback
   to request a release of the device

 - Fix calculation for R_390_GOTENT relocations for modules

 - Allow any user space process with CAP_PERFMON capability read and
   display the CPU Measurement facility counter sets

 - Rework large statically-defined per-CPU cpu_cf_events data structure
   and replace it with dynamically allocated structures created when a
   perf_event_open() system call is invoked or /dev/hwctr device is
   accessed

* tag 's390-6.5-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/cpum_cf: rework PER_CPU_DEFINE of struct cpu_cf_events
  s390/cpum_cf: open access to hwctr device for CAP_PERFMON privileged process
  s390/module: fix rela calculation for R_390_GOTENT
  s390/vfio-ap: wire in the vfio_device_ops request callback
  s390/vfio-ap: realize the VFIO_DEVICE_SET_IRQS ioctl
  s390/vfio-ap: realize the VFIO_DEVICE_GET_IRQ_INFO ioctl
  s390/pkey: add support for ecc clear key
  s390/pkey: do not use struct pkey_protkey
  s390/pkey: introduce reverse x-mas trees
  s390/zcore: conditionally clear memory on reipl
  s390/ipl: add REIPL_CLEAR flag to os_info
  vfio/ccw: use struct_size() helper
  vfio/ccw: replace one-element array with flexible-array member
  s390: select ARCH_SUPPORTS_INT128
  s390/pai_ext: replace atomic_t with refcount_t
  s390/pai_crypto: replace atomic_t with refcount_t

s390/uvdevice: Add 'Lock Secret Store' UVC

2023-06-16T09:08:09+00:00

Userspace can call the Lock Secret Store Ultravisor Call
using IOCTLs on the uvdevice. The Lock Secret Store UV call
disables all additions of secrets for the future.

The uvdevice is merely transporting the request from userspace to the
Ultravisor.

Signed-off-by: Steffen Eiden 
Reviewed-by: Janosch Frank 
Link: https://lore.kernel.org/r/20230615100533.3996107-6-seiden@linux.ibm.com
Signed-off-by: Janosch Frank 
Message-Id: <20230615100533.3996107-6-seiden@linux.ibm.com>

s390/uvdevice: Add 'List Secrets' UVC

2023-06-16T09:08:09+00:00

Userspace can call the List Secrets Ultravisor Call
using IOCTLs on the uvdevice. The List Secrets UV call lists the
identifier of the secrets in the UV secret store.

The uvdevice is merely transporting the request from userspace to
Ultravisor. It's neither checking nor manipulating the request or
response data.

Signed-off-by: Steffen Eiden 
Reviewed-by: Janosch Frank 
Link: https://lore.kernel.org/r/20230615100533.3996107-5-seiden@linux.ibm.com
Signed-off-by: Janosch Frank 
Message-Id: <20230615100533.3996107-5-seiden@linux.ibm.com>