mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2026-07-23 13:17:34 -04:00
25a01b5155
Pull s390 updates from Alexander Gordeev: - Use CIO device online variable instead of the internal FSM state to determine device availability during purge operations - Remove extra check of task_stack_page() because try_get_task_stack() already takes care of that when reading /proc/<pid>/wchan - Allow user-space to use the new SCLP action qualifier 4 for to provide NVMe SMART log data to the platform. - Send AP CHANGE uevents on successful bind and successful association to notify user-space about SE operations on AP queue devices - Add an s390dbf kernel parameter to configure debug log levels and area sizes during early boot - On arm64 the empty zero page is going to be mapped read-only. Do the same for s390 with an explicit set_memory_ro() call - Improve s390-specific bcr_serialize() and cpu_relax() implementations - Remove all unused variables to avoid allmodconfig W=1 build fails with latest clang-23 - Cleanup default Kconfig values for s390 selftests - Add a s390-tod trace clock to allow comparing trace timestamps between different systems or virtual machines on s390 - Remove the s390 implementation of strlcat() in favor of the generic variant - Make consistent the calling order between page_table_check_pte_clear() and secure page conversion across all code paths - Rearrange some fields within AP and zcrypt structs to reduce memory consumption and unused holes - Shorten GR_NUM and VX_NUM macros and move them to a separate header - Replace __get_free_page() with kmalloc() in few sources - Introduce an infrastructure for more efficient this_cpu operations. Eliminate conditional branches when PREEMPT_NONE is removed - Enable Rust support - Use z10 as minimum architecture level, similar to the boot code, to enforce a defined architecture level set - Improve and convert various mem*() helper functions to C. For that add .noinstr.text section to avoid orphaned warnings from the linker - Fix the function pointer type in __ret_from_fork() to correct the indirect call to match kernel thread return type of int - Revert support for DCACHE_WORD_ACCESS to avoid an endless exception loop on read from donated Ultravisor pages at unaligned addresses * tag 's390-7.2-1' of gitolite.kernel.org:pub/scm/linux/kernel/git/s390/linux: (52 commits) s390: Revert support for DCACHE_WORD_ACCESS s390/process: Fix kernel thread function pointer type s390/tishift: Convert __ashlti3(), __ashrti3(), __lshrti3() to C s390/memmove: Optimize backward copy case s390/string: Convert memset(16|32|64)() to C s390/string: Convert memcpy() to C s390/string: Convert memset() to C s390/string: Convert memmove() to C s390/string: Add -ffreestanding compile option to string.o s390: Add .noinstr.text to boot and purgatory linker scripts s390/purgatory: Enforce z10 minimum architecture level s390: Enable Rust support s390/cmpxchg: Fix KASAN stack-out-of-bounds in atomic helpers rust: helpers: Add memchr wrapper for string operations rust/bindgen_parameters: Mark s390 types as opaque to prevent repr conflicts s390/jump_label: Implement ARCH_STATIC_BRANCH_JUMP_ASM and ARCH_STATIC_BRANCH_ASM macros s390/bug: Provide ARCH_WARN_ASM for Rust WARN/BUG support s390/ap: Fix locking issue in SE bind and associate sysfs functions s390/percpu: Provide arch_this_cpu_write() implementation s390/percpu: Provide arch_this_cpu_read() implementation ...
142 lines
3.6 KiB
C
142 lines
3.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_S390_BUG_H
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#define _ASM_S390_BUG_H
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#include <linux/compiler.h>
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#include <linux/const.h>
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#include <linux/stringify.h>
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#define MONCODE_BUG _AC(0, U)
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#define MONCODE_BUG_ARG _AC(1, U)
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#ifndef __ASSEMBLER__
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#if defined(CONFIG_BUG) && defined(CONFIG_CC_HAS_ASM_IMMEDIATE_STRINGS)
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#ifdef CONFIG_DEBUG_BUGVERBOSE
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#define __BUG_ENTRY_VERBOSE(file, line) \
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" .long " file " - . # bug_entry::file\n" \
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" .short " line " # bug_entry::line\n"
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#else
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#define __BUG_ENTRY_VERBOSE(file, line)
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#endif
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#ifdef CONFIG_DEBUG_BUGVERBOSE_DETAILED
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#define WARN_CONDITION_STR(cond_str) cond_str
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#else
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#define WARN_CONDITION_STR(cond_str) ""
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#endif
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#define __BUG_ENTRY(format, file, line, flags, size) \
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" .section __bug_table,\"aw\"\n" \
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"1: .long 0b - . # bug_entry::bug_addr\n"\
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" .long " format " - . # bug_entry::format\n" \
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__BUG_ENTRY_VERBOSE(file, line) \
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" .short "flags" # bug_entry::flags\n" \
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" .org 1b+"size"\n" \
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" .previous"
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#define __BUG_ASM(cond_str, flags) \
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do { \
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asm_inline volatile("\n" \
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"0: mc %[monc](%%r0),0\n" \
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__BUG_ENTRY("%[frmt]", "%[file]", "%[line]", \
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"%[flgs]", "%[size]") \
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: \
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: [monc] "i" (MONCODE_BUG), \
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[frmt] "i" (WARN_CONDITION_STR(cond_str)), \
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[file] "i" (__FILE__), \
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[line] "i" (__LINE__), \
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[flgs] "i" (flags), \
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[size] "i" (sizeof(struct bug_entry))); \
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} while (0)
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#define BUG() \
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do { \
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__BUG_ASM("", 0); \
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unreachable(); \
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} while (0)
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#define __WARN_FLAGS(cond_str, flags) \
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do { \
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__BUG_ASM(cond_str, BUGFLAG_WARNING | (flags)); \
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} while (0)
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#define __WARN_bug_entry(flags, format) \
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({ \
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struct bug_entry *bug; \
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\
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asm_inline volatile("\n" \
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"0: larl %[bug],1f\n" \
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__BUG_ENTRY("%[frmt]", "%[file]", "%[line]", \
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"%[flgs]", "%[size]") \
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: [bug] "=d" (bug) \
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: [frmt] "i" (format), \
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[file] "i" (__FILE__), \
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[line] "i" (__LINE__), \
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[flgs] "i" (flags), \
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[size] "i" (sizeof(struct bug_entry))); \
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bug; \
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})
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/*
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* Variable Argument List (va_list) as defined in ELF Application
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* Binary Interface s390x Supplement documentation.
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*/
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struct arch_va_list {
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long __gpr;
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long __fpr;
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void *__overflow_arg_area;
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void *__reg_save_area;
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};
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struct bug_entry;
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struct pt_regs;
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void *__warn_args(struct arch_va_list *args, struct pt_regs *regs);
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void __WARN_trap(struct bug_entry *bug, ...);
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#define __WARN_print_arg(flags, format, arg...) \
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do { \
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int __flags = (flags) | BUGFLAG_WARNING | BUGFLAG_ARGS; \
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\
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__WARN_trap(__WARN_bug_entry(__flags, format), ## arg); \
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/* prevent tail-call optimization */ \
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asm(""); \
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} while (0)
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#define __WARN_printf(taint, fmt, arg...) \
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__WARN_print_arg(BUGFLAG_TAINT(taint), fmt, ## arg)
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#define WARN_ONCE(cond, format, arg...) \
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({ \
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int __ret_warn_on = !!(cond); \
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\
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if (unlikely(__ret_warn_on)) { \
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__WARN_print_arg(BUGFLAG_ONCE|BUGFLAG_TAINT(TAINT_WARN),\
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format, ## arg); \
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} \
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__ret_warn_on; \
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})
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#define HAVE_ARCH_BUG
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#define HAVE_ARCH_BUG_FORMAT
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#define HAVE_ARCH_BUG_FORMAT_ARGS
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#define ARCH_WARN_ASM(file, line, flags, size) \
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".section .rodata.str,\"aMS\",@progbits,1\n" \
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"9:\n" \
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".asciz \"\"\n" /* Empty string for compatibility */ \
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".previous\n" \
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"0:\n" \
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__stringify(mc 0(%r0),0) "\n" \
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__BUG_ENTRY("9b", file, line, flags, size)
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#define ARCH_WARN_REACHABLE
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#endif /* CONFIG_BUG && CONFIG_CC_HAS_ASM_IMMEDIATE_STRINGS */
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#endif /* __ASSEMBLER__ */
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#include <asm-generic/bug.h>
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#endif /* _ASM_S390_BUG_H */
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