[GIT PULL] s390 patches for the 6.4 merge window

From: Vasily Gorbik
Date: Sat Apr 29 2023 - 15:17:24 EST

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Hello Linus,

please pull s390 changes for 6.4. There is a stackleak common code change
which allow specifying architecture-specific stackleak poison function
to enable faster implementation. This change has been acked-by Mark Rutland.
https://lore.kernel.org/all/ZDZz8QvPdpGJqMd6@FVFF77S0Q05N/

There are a few small merge conflicts, notably with driver-core and tip
trees. Both have already been pulled, and here are the manual conflict
resolutions:

diff --cc arch/s390/kernel/setup.c
index 4259b6c50516,0903fe356634..fe10da1a271e
--- a/arch/s390/kernel/setup.c
+++ b/arch/s390/kernel/setup.c
@@@ -385,18 -381,13 +381,13 @@@ void stack_free(unsigned long stack
#endif
}

- int __init arch_early_irq_init(void)
-void __init arch_call_rest_init(void)
++void __init __noreturn arch_call_rest_init(void)
{
- unsigned long stack;
-
- stack = __get_free_pages(GFP_KERNEL, THREAD_SIZE_ORDER);
- if (!stack)
- panic("Couldn't allocate async stack");
- S390_lowcore.async_stack = stack + STACK_INIT_OFFSET;
- return 0;
+ smp_reinit_ipl_cpu();
+ rest_init();
}

- void __init __noreturn arch_call_rest_init(void)
+ static unsigned long __init stack_alloc_early(void)
{
unsigned long stack;

diff --cc arch/s390/kernel/topology.c
index 72af753d1bba,e5d6a1c25d13..9fd19530c9a5
--- a/arch/s390/kernel/topology.c
+++ b/arch/s390/kernel/topology.c
@@@ -637,33 -637,14 +637,23 @@@ static struct ctl_table topology_ctl_ta
{ },
};

- static struct ctl_table topology_dir_table[] = {
- {
- .procname = "s390",
- .maxlen = 0,
- .mode = 0555,
- .child = topology_ctl_table,
- },
- { },
- };
-
static int __init topology_init(void)
{
+ struct device *dev_root;
+ int rc = 0;
+
timer_setup(&topology_timer, topology_timer_fn, TIMER_DEFERRABLE);
if (MACHINE_HAS_TOPOLOGY)
set_topology_timer();
else
topology_update_polarization_simple();
- register_sysctl_table(topology_dir_table);
+ register_sysctl("s390", topology_ctl_table);
- return device_create_file(cpu_subsys.dev_root, &dev_attr_dispatching);
+
+ dev_root = bus_get_dev_root(&cpu_subsys);
+ if (dev_root) {
+ rc = device_create_file(dev_root, &dev_attr_dispatching);
+ put_device(dev_root);
+ }
+ return rc;
}
device_initcall(topology_init);
--

Also, a fixup is required for the drivers/s390/crypto/ap_bus.c:

diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c
index 85bb0de15e76..8d6b9a52bf3c 100644
--- a/drivers/s390/crypto/ap_bus.c
+++ b/drivers/s390/crypto/ap_bus.c
@@ -1570,7 +1570,7 @@ static ssize_t bindings_show(const struct bus_type *bus, char *buf)

static BUS_ATTR_RO(bindings);

-static ssize_t features_show(struct bus_type *bus, char *buf)
+static ssize_t features_show(const struct bus_type *bus, char *buf)
{
int n = 0;

--
Besides that auto-merging does well.

Thank you,
Vasily

The following changes since commit eeac8ede17557680855031c6f305ece2378af326:

Linux 6.3-rc2 (2023-03-12 16:36:44 -0700)

are available in the Git repository at:

git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux.git tags/s390-6.4-1

for you to fetch changes up to 2a405f6bb3a5b2baaa74dfc5aaa0e1b99145bd1b:

s390/stackleak: provide fast __stackleak_poison() implementation (2023-04-20 11:36:35 +0200)

----------------------------------------------------------------
s390 updates for the 6.4 merge window

- Add support for stackleak feature. Also allow specifying
architecture-specific stackleak poison function to enable faster
implementation. On s390, the mvc-based implementation helps decrease
typical overhead from a factor of 3 to just 25%

- Convert all assembler files to use SYM* style macros, deprecating the
ENTRY() macro and other annotations. Select ARCH_USE_SYM_ANNOTATIONS

- Improve KASLR to also randomize module and special amode31 code
base load addresses

- Rework decompressor memory tracking to support memory holes and improve
error handling

- Add support for protected virtualization AP binding

- Add support for set_direct_map() calls

- Implement set_memory_rox() and noexec module_alloc()

- Remove obsolete overriding of mem*() functions for KASAN

- Rework kexec/kdump to avoid using nodat_stack to call purgatory

- Convert the rest of the s390 code to use flexible-array member instead
of a zero-length array

- Clean up uaccess inline asm

- Enable ARCH_HAS_MEMBARRIER_SYNC_CORE

- Convert to using CONFIG_FUNCTION_ALIGNMENT and enable
DEBUG_FORCE_FUNCTION_ALIGN_64B

- Resolve last_break in userspace fault reports

- Simplify one-level sysctl registration

- Clean up branch prediction handling

- Rework CPU counter facility to retrieve available counter sets just
once

- Other various small fixes and improvements all over the code

----------------------------------------------------------------
Al Viro (1):
s390: trim ancient junk from copy_thread()

Alexander Gordeev (5):
s390/kexec: turn DAT mode off immediately before purgatory
s390/kdump: cleanup do_start_kdump() prototype and usage
s390/kdump: fix virtual vs physical address confusion
s390/kdump: rework invocation of DAT-off code
s390/kdump: remove nodat stack restriction for calling nodat functions

Gustavo A. R. Silva (2):
s390/diag: replace zero-length array with flexible-array member
s390/fcx: replace zero-length array with flexible-array member

Harald Freudenberger (15):
s390/zcrypt: make psmid unsigned long instead of long long
s390/zcrypt: rework length information for dqap
s390/zcrypt: replace scnprintf with sysfs_emit
s390/ap: exploit new B bit from QCI config info
s390/ap: introduce new AP bus sysfs attribute features
s390/ap: make tapq gr2 response a struct
s390/ap: filter ap card functions, new queue functions attribute
s390/ap: provide F bit parameter for ap_rapq() and ap_zapq()
s390/ap: new low level inline functions ap_bapq() and ap_aapq()
s390/ap: introduce low frequency polling possibility
s390/ap: implement SE AP bind, unbind and associate
s390/ap: add ap status asynch error support
s390/zcrypt: remove unused ancient padding code
s390/zcrypt: simplify prep of CCA key token
s390/zcrypt: rework arrays with length zero occurrences

Heiko Carstens (66):
s390: update defconfigs
s390/bp: add missing BPENTER to program check handler
s390/bp: remove TIF_ISOLATE_BP
s390/bp: remove s390_isolate_bp_guest()
s390/bp: remove __bpon()
s390/setup: always inline gen_lpswe()
Merge branch 'decompressor-memory-tracking' into features
s390: make use of CONFIG_FUNCTION_ALIGNMENT
s390/ftrace: move hotpatch trampolines to mcount.S
s390/expoline: use __ALIGN instead of open coded .align
s390/vdso: use __ALIGN instead of open coded .align
s390: enable DEBUG_FORCE_FUNCTION_ALIGN_64B
s390/mm: make use of atomic_fetch_xor()
s390: enable ARCH_HAS_MEMBARRIER_SYNC_CORE
s390/uaccess: add missing earlyclobber annotations to __clear_user()
s390/uaccess: use symbolic names for inline assembly operands
s390/uaccess: remove unused label in inline assemblies
s390/uaccess: rename/sort labels in inline assemblies
s390/uaccess: sort EX_TABLE list for inline assemblies
s390/uaccess: rename tmp1 and tmp2 variables
s390/uaccess: get rid of not needed local variable
s390/uaccess: remove extra blank line
s390/dumpstack: simplify in stack logic code
s390/stack: use STACK_INIT_OFFSET where possible
s390/stack: set lowcore kernel stack pointer early
s390: use init_thread_union aka initial stack for the first process
s390/stacktrace: remove call_on_stack_noreturn()
s390: remove arch_early_irq_init()
s390: move on_thread_stack() to processor.h
s390: enable HAVE_ARCH_STACKLEAK
s390/checksum: always use cksm instruction
s390/checksum: remove not needed uaccess.h include
s390/kaslr: provide kaslr_enabled() function
s390/kaslr: randomize module base load address
s390/mm: implement set_memory_rox()
s390/mm: implement set_memory_rwnx()
s390/mm: use set_memory_*() helpers instead of open coding
s390/ftrace: do not assume module_alloc() returns executable memory
s390/module: create module allocations without exec permissions
s390/mm: rename POPULATE_ONE2ONE to POPULATE_DIRECT
s390/mm: fix direct map accounting
s390/debug: replace zero-length array with flexible-array member
s390/sclp: replace zero-length array with flexible-array member
s390/cio: replace zero-length array with flexible-array member
s390/kasan: remove override of mem*() functions
s390/lib: use SYM* macros instead of ENTRY(), etc.
s390/amode31: use SYM* macros instead of ENTRY(), etc.
s390/crypto,chacha: use SYM* macros instead of ENTRY(), etc.
s390/crc32be: use SYM* macros instead of ENTRY(), etc.
s390/crc32le: use SYM* macros instead of ENTRY(), etc.
s390/mcount: use SYM* macros instead of ENTRY(), etc.
s390/earlypgm: use SYM* macros instead of ENTRY(), etc.
s390/head64: use SYM* macros instead of ENTRY(), etc.
s390/reipl: use SYM* macros instead of ENTRY(), etc.
s390/kprobes: use SYM* macros instead of ENTRY(), etc.
s390/purgatory: use SYM* macros instead of ENTRY(), etc.
s390/entry: use SYM* macros instead of ENTRY(), etc.
s390/relocate_kernel: use SYM* macros instead of ENTRY(), etc.
s390/relocate_kernel: adjust indentation
s390/mm: use BIT macro to generate SET_MEMORY bit masks
s390/mm: enable ARCH_HAS_SET_DIRECT_MAP
s390: wire up memfd_secret system call
s390/mm: use VM_FLUSH_RESET_PERMS in module_alloc()
s390: select ARCH_USE_SYM_ANNOTATIONS
stackleak: allow to specify arch specific stackleak poison function
s390/stackleak: provide fast __stackleak_poison() implementation

Ilya Leoshkevich (1):
s390/dumpstack: resolve userspace last_break

Lizhe (1):
s390/vfio-ap: remove redundant driver match function

Luis Chamberlain (6):
s390: simplify one-level sysctl registration for topology_ctl_table
s390: simplify one-level syctl registration for s390dbf_table
s390: simplify one-level sysctl registration for appldata_table
s390: simplify one level sysctl registration for cmm_table
s390: simplify one-level sysctl registration for page_table_sysctl
s390: simplify dynamic sysctl registration for appldata_register_ops

Marc Hartmayer (1):
s390/boot: improve install.sh script

Nico Boehr (1):
s390/ipl: fix physical-virtual confusion for diag308

Niklas Schnelle (4):
PCI: s390: Fix use-after-free of PCI resources with per-function hotplug
s390/pci: only add specific device in zpci_bus_scan_device()
s390/pci: remove redundant pci_bus_add_devices() on new bus
s390/pci: clean up left over special treatment for function zero

Sven Schnelle (1):
s390/ipl: add missing intersection check to ipl_report handling

Thomas Richter (7):
s390/cpum_sf: remove flag PERF_CPUM_SF_FULL_BLOCKS
s390/cpum_cf: log bad return code of function cfset_all_copy
s390/cpum_cf: remove unnecessary copy_from_user call
s390/cpum_cf: simplify pr_err() statement in cpumf_pmu_enable/disable
s390/cpum_cf: introduce static CPU counter facility information
s390/cpum_cf: provide counter number to validate_ctr_version()
s390/cpum_cf: remove function validate_ctr_auth() by inline code

Vasily Gorbik (12):
s390/boot: remove non-functioning image bootable check
s390/boot: rename mem_detect to physmem_info
s390/boot: rework decompressor reserved tracking
s390/mm,pageattr: allow KASAN shadow memory
s390/kasan: move shadow mapping to decompressor
Merge branch 'uaccess-inline-asm-cleanup' into features
s390/entry: rely on long-displacement facility
s390: make extables read-only
s390/boot: do not change default_lma
s390/boot: pin amode31 default lma
s390/kaslr: generalize and improve random base distribution
s390/kaslr: randomize amode31 base address

Yu Zhe (1):
s390/zcrypt: remove unnecessary (void *) conversions

.../sched/membarrier-sync-core/arch-support.txt | 4 +-
arch/s390/Kconfig | 10 +-
arch/s390/appldata/appldata_base.c | 32 +-
arch/s390/boot/Makefile | 2 +-
arch/s390/boot/boot.h | 42 ++-
arch/s390/boot/install.sh | 8 +-
arch/s390/boot/ipl_parm.c | 6 +-
arch/s390/boot/ipl_report.c | 100 ++---
arch/s390/boot/kaslr.c | 171 +++++----
arch/s390/boot/mem_detect.c | 191 ----------
arch/s390/boot/pgm_check_info.c | 7 +-
arch/s390/boot/physmem_info.c | 328 +++++++++++++++++
arch/s390/boot/startup.c | 129 ++++---
arch/s390/boot/vmem.c | 284 +++++++++++---
arch/s390/boot/vmlinux.lds.S | 2 +
arch/s390/configs/debug_defconfig | 13 +-
arch/s390/configs/defconfig | 12 +-
arch/s390/configs/zfcpdump_defconfig | 2 +-
arch/s390/crypto/chacha-s390.S | 47 +--
arch/s390/crypto/crc32be-vx.S | 17 +-
arch/s390/crypto/crc32le-vx.S | 30 +-
arch/s390/include/asm/ap.h | 152 ++++++--
arch/s390/include/asm/checksum.h | 10 +-
arch/s390/include/asm/diag.h | 2 +-
arch/s390/include/asm/entry-common.h | 5 -
arch/s390/include/asm/fcx.h | 2 +-
arch/s390/include/asm/kasan.h | 31 +-
arch/s390/include/asm/linkage.h | 2 +-
arch/s390/include/asm/mem_detect.h | 117 ------
arch/s390/include/asm/nospec-insn.h | 3 +-
arch/s390/include/asm/perf_event.h | 2 -
arch/s390/include/asm/pgtable.h | 2 +-
arch/s390/include/asm/physmem_info.h | 171 +++++++++
arch/s390/include/asm/processor.h | 46 ++-
arch/s390/include/asm/set_memory.h | 36 +-
arch/s390/include/asm/setup.h | 20 +-
arch/s390/include/asm/stacktrace.h | 52 ++-
arch/s390/include/asm/string.h | 15 +-
arch/s390/include/asm/thread_info.h | 10 +-
arch/s390/kernel/debug.c | 14 +-
arch/s390/kernel/dumpstack.c | 46 ++-
arch/s390/kernel/early.c | 23 +-
arch/s390/kernel/earlypgm.S | 4 +-
arch/s390/kernel/entry.S | 152 ++++----
arch/s390/kernel/ftrace.c | 22 +-
arch/s390/kernel/head64.S | 14 +-
arch/s390/kernel/ipl.c | 7 +-
arch/s390/kernel/kprobes.c | 2 +-
arch/s390/kernel/kprobes_insn_page.S | 4 +-
arch/s390/kernel/machine_kexec.c | 56 ++-
arch/s390/kernel/mcount.S | 26 +-
arch/s390/kernel/module.c | 29 +-
arch/s390/kernel/perf_cpum_cf.c | 206 +++++------
arch/s390/kernel/perf_cpum_sf.c | 14 +-
arch/s390/kernel/process.c | 10 +-
arch/s390/kernel/processor.c | 18 -
arch/s390/kernel/reipl.S | 10 +-
arch/s390/kernel/relocate_kernel.S | 96 +++--
arch/s390/kernel/setup.c | 152 +++-----
arch/s390/kernel/smp.c | 11 +-
arch/s390/kernel/syscalls/syscall.tbl | 2 +-
arch/s390/kernel/text_amode31.S | 75 ++--
arch/s390/kernel/topology.c | 12 +-
arch/s390/kernel/vdso32/vdso_user_wrapper.S | 3 +-
arch/s390/kernel/vdso64/vdso_user_wrapper.S | 5 +-
arch/s390/kernel/vmlinux.lds.S | 10 +-
arch/s390/lib/mem.S | 28 +-
arch/s390/lib/uaccess.c | 137 +++----
arch/s390/mm/Makefile | 3 -
arch/s390/mm/cmm.c | 12 +-
arch/s390/mm/init.c | 5 +-
arch/s390/mm/kasan_init.c | 301 ---------------
arch/s390/mm/pageattr.c | 94 ++++-
arch/s390/mm/pgalloc.c | 20 +-
arch/s390/mm/vmem.c | 35 +-
arch/s390/pci/pci.c | 39 +-
arch/s390/pci/pci_bus.c | 23 +-
arch/s390/pci/pci_bus.h | 3 +-
arch/s390/purgatory/head.S | 62 +---
arch/s390/purgatory/kexec-purgatory.S | 14 +-
drivers/pci/bus.c | 21 ++
drivers/s390/char/sclp.h | 2 +-
drivers/s390/char/sclp_cmd.c | 2 +-
drivers/s390/char/sclp_early_core.c | 8 +-
drivers/s390/cio/chsc.c | 2 +-
drivers/s390/cio/chsc.h | 2 +-
drivers/s390/crypto/ap_bus.c | 254 +++++++------
drivers/s390/crypto/ap_bus.h | 70 ++--
drivers/s390/crypto/ap_card.c | 23 +-
drivers/s390/crypto/ap_queue.c | 410 +++++++++++++++++----
drivers/s390/crypto/vfio_ap_drv.c | 6 -
drivers/s390/crypto/vfio_ap_ops.c | 16 +-
drivers/s390/crypto/zcrypt_api.c | 60 +--
drivers/s390/crypto/zcrypt_card.c | 6 +-
drivers/s390/crypto/zcrypt_cca_key.h | 37 +-
drivers/s390/crypto/zcrypt_ccamisc.c | 74 ++--
drivers/s390/crypto/zcrypt_cex2c.c | 66 ++--
drivers/s390/crypto/zcrypt_cex4.c | 141 ++++---
drivers/s390/crypto/zcrypt_ep11misc.c | 2 +-
drivers/s390/crypto/zcrypt_msgtype50.c | 15 +-
drivers/s390/crypto/zcrypt_msgtype6.c | 139 +++----
drivers/s390/crypto/zcrypt_queue.c | 4 +-
include/linux/pci.h | 1 +
kernel/stackleak.c | 17 +-
lib/Kconfig.debug | 2 +-
105 files changed, 2831 insertions(+), 2463 deletions(-)
delete mode 100644 arch/s390/boot/mem_detect.c
create mode 100644 arch/s390/boot/physmem_info.c
delete mode 100644 arch/s390/include/asm/mem_detect.h
create mode 100644 arch/s390/include/asm/physmem_info.h
delete mode 100644 arch/s390/mm/kasan_init.c

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