Merge tag 's390-5.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 updates from Heiko Carstens:

 - Make use of the IBM z16 processor activity instrumentation facility
   to count cryptography operations: add a new PMU device driver so that
   perf can make use of this.

 - Add new IBM z16 extended counter set to cpumf support.

 - Add vdso randomization support.

 - Add missing KCSAN instrumentation to barriers and spinlocks, which
   should make s390's KCSAN support complete.

 - Add support for IPL-complete-control facility: notify the hypervisor
   that kexec finished work and the kernel starts.

 - Improve error logging for PCI.

 - Various small changes to workaround llvm's integrated assembler
   limitations, and one bug, to make it finally possible to compile the
   kernel with llvm's integrated assembler. This also requires to raise
   the minimum clang version to 14.0.0.

 - Various other small enhancements, bug fixes, and cleanups all over
   the place.

* tag 's390-5.19-1' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux: (48 commits)
  s390/head: get rid of 31 bit leftovers
  scripts/min-tool-version.sh: raise minimum clang version to 14.0.0 for s390
  s390/boot: do not emit debug info for assembly with llvm's IAS
  s390/boot: workaround llvm IAS bug
  s390/purgatory: workaround llvm's IAS limitations
  s390/entry: workaround llvm's IAS limitations
  s390/alternatives: remove padding generation code
  s390/alternatives: provide identical sized orginal/alternative sequences
  s390/cpumf: add new extended counter set for IBM z16
  s390/preempt: disable __preempt_count_add() optimization for PROFILE_ALL_BRANCHES
  s390/stp: clock_delta should be signed
  s390/stp: fix todoff size
  s390/pai: add support for cryptography counters
  entry: Rename arch_check_user_regs() to arch_enter_from_user_mode()
  s390/compat: cleanup compat_linux.h header file
  s390/entry: remove broken and not needed code
  s390/boot: convert parmarea to C
  s390/boot: convert initial lowcore to C
  s390/ptrace: move short psw definitions to ptrace header file
  s390/head: initialize all new psws
  ...

1 files changed, 9 insertions, 5 deletions

diff --git a/arch/s390/include/asm/entry-common.h b/arch/s390/include/asm/entry-common.h
index 2f0a1cacdf85..000de2b1e67a 100644
--- a/arch/s390/include/asm/entry-common.h
+++ b/arch/s390/include/asm/entry-common.h
@@ -9,19 +9,21 @@
 #include <linux/uaccess.h>
 #include <asm/timex.h>
 #include <asm/fpu/api.h>
+#include <asm/pai.h>
 
 #define ARCH_EXIT_TO_USER_MODE_WORK (_TIF_GUARDED_STORAGE | _TIF_PER_TRAP)
 
 void do_per_trap(struct pt_regs *regs);
 
-#ifdef CONFIG_DEBUG_ENTRY
-static __always_inline void arch_check_user_regs(struct pt_regs *regs)
+static __always_inline void arch_enter_from_user_mode(struct pt_regs *regs)
 {
-	debug_user_asce(0);
+	if (IS_ENABLED(CONFIG_DEBUG_ENTRY))
+		debug_user_asce(0);
+
+	pai_kernel_enter(regs);
 }
 
-#define arch_check_user_regs arch_check_user_regs
-#endif /* CONFIG_DEBUG_ENTRY */
+#define arch_enter_from_user_mode arch_enter_from_user_mode
 
 static __always_inline void arch_exit_to_user_mode_work(struct pt_regs *regs,
 							unsigned long ti_work)
@@ -44,6 +46,8 @@ static __always_inline void arch_exit_to_user_mode(void)
 
 	if (IS_ENABLED(CONFIG_DEBUG_ENTRY))
 		debug_user_asce(1);
+
+	pai_kernel_exit(current_pt_regs());
 }
 
 #define arch_exit_to_user_mode arch_exit_to_user_mode