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/linux-6.8/arch/arm64/include/asm/stacktrace/
Dnvhe.h1 /* SPDX-License-Identifier: GPL-2.0-only */
7 * 1) Non-protected nVHE mode - the host can directly access the
12 * 2) pKVM (protected nVHE) mode - the host cannot directly access
24 * kvm_nvhe_unwind_init() - Start an unwind from the given nVHE HYP fp and pc
28 * @pc : program counter at which to start the unwinding.
32 unsigned long pc) in kvm_nvhe_unwind_init() argument
36 state->fp = fp; in kvm_nvhe_unwind_init()
37 state->pc = pc; in kvm_nvhe_unwind_init()
42 * Conventional (non-protected) nVHE HYP stack unwinder
44 * In non-protected mode, the unwinding is done from kernel proper context
/linux-6.8/arch/arm64/kvm/hyp/nvhe/
Dstacktrace.c1 // SPDX-License-Identifier: GPL-2.0-only
18 * hyp_prepare_backtrace - Prepare non-protected nVHE backtrace.
21 * @pc : program counter at which to start the unwinding.
23 * Save the information needed by the host to unwind the non-protected
26 static void hyp_prepare_backtrace(unsigned long fp, unsigned long pc) in hyp_prepare_backtrace() argument
31 stacktrace_info->stack_base = (unsigned long)(params->stack_hyp_va - PAGE_SIZE); in hyp_prepare_backtrace()
32 stacktrace_info->overflow_stack_base = (unsigned long)this_cpu_ptr(overflow_stack); in hyp_prepare_backtrace()
33 stacktrace_info->fp = fp; in hyp_prepare_backtrace()
34 stacktrace_info->pc = pc; in hyp_prepare_backtrace()
56 unsigned long high = params->stack_hyp_va; in stackinfo_get_hyp()
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/linux-6.8/Documentation/admin-guide/
Drtc.rst8 the local time zone or daylight savings time -- unless they dual boot
9 with MS-Windows -- but will instead be set to Coordinated Universal Time
12 The newest non-PC hardware tends to just count seconds, like the time(2)
16 Linux has two largely-compatible userspace RTC API families you may
19 * /dev/rtc ... is the RTC provided by PC compatible systems,
20 so it's not very portable to non-x86 systems.
25 Programmers need to understand that the PC/AT functionality is not
30 IRQ, so they can't all issue alarms; and where standard PC RTCs can
35 Old PC/AT-Compatible driver: /dev/rtc
36 --------------------------------------
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/linux-6.8/arch/arm/boot/dts/allwinner/
Dsun8i-h3-orangepi-pc-plus.dts4 * This file is dual-licensed: you can use it either under the terms
43 /* The Orange Pi PC Plus is an extended version of the regular PC */
44 #include "sun8i-h3-orangepi-pc.dts"
47 model = "Xunlong Orange Pi PC Plus";
48 compatible = "xunlong,orangepi-pc-plus", "allwinner,sun8i-h3";
51 /* ethernet0 is the H3 emac, defined in sun8i-h3.dtsi */
57 vmmc-supply = <&reg_vcc3v3>;
58 bus-width = <4>;
59 non-removable;
64 * alias for it (which e.g. makes u-boot set a mac-address).
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/linux-6.8/arch/arm64/include/asm/
Dpreempt.h1 /* SPDX-License-Identifier: GPL-2.0 */
13 return READ_ONCE(current_thread_info()->preempt.count); in preempt_count()
16 static inline void preempt_count_set(u64 pc) in preempt_count_set() argument
19 WRITE_ONCE(current_thread_info()->preempt.count, pc); in preempt_count_set()
23 task_thread_info(p)->preempt_count = FORK_PREEMPT_COUNT; \
27 task_thread_info(p)->preempt_count = PREEMPT_DISABLED; \
32 current_thread_info()->preempt.need_resched = 0; in set_preempt_need_resched()
37 current_thread_info()->preempt.need_resched = 1; in clear_preempt_need_resched()
42 return !current_thread_info()->preempt.need_resched; in test_preempt_need_resched()
47 u32 pc = READ_ONCE(current_thread_info()->preempt.count); in __preempt_count_add() local
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/linux-6.8/arch/m68k/q40/
DREADME6 available from this place or http://ftp.uni-erlangen.de/pub/unix/Linux/680x0/q40/
13 is not implemented - do not try it! (See below)
15 For a list of kernel command-line options read the documentation for the
22 poll the floppy for this reason - something that can't be done in Linux.
27 drivers/char/q40_keyb.c # use PC keymaps for national keyboards
28 serial.c # normal PC driver - any speed
33 block/floppy.c # normal PC driver, DMA emu in asm/floppy.h
43 Various other PC drivers can be enabled simply by adding them to
56 requested - SRAM must start with '%LX$' signature to do this. '-d' option
61 only the penguin - and shell prompt if it gets that far..
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/linux-6.8/arch/sh/kernel/
Dtraps_32.c1 // SPDX-License-Identifier: GPL-2.0
9 * Copyright (C) 2002 - 2010 Paul Mundt
98 * - note that PC _may not_ point to the faulting instruction
100 * - return 0 if emulation okay, -EFAULT on existential error
111 rn = &regs->regs[index]; in handle_unaligned_ins()
114 rm = &regs->regs[index]; in handle_unaligned_ins()
125 ret = -EFAULT; in handle_unaligned_ins()
131 srcu += regs->regs[0]; in handle_unaligned_ins()
136 dst += 4-count; in handle_unaligned_ins()
138 if (ma->from(dst, srcu, count)) in handle_unaligned_ins()
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Dtraps.c1 // SPDX-License-Identifier: GPL-2.0
37 printk("Process: %s (pid: %d, stack limit = %p)\n", current->comm, in die()
41 dump_mem("Stack: ", KERN_DEFAULT, regs->regs[15], in die()
71 * - userspace errors just cause EFAULT to be returned, resulting in SEGV
72 * - kernel/userspace interfaces cause a jump to an appropriate handler
73 * - other kernel errors are bad
79 fixup = search_exception_tables(regs->pc); in die_if_no_fixup()
81 regs->pc = fixup->fixup; in die_if_no_fixup()
93 unsigned long bugaddr = regs->pc; in handle_BUG()
102 if (bug->flags & BUGFLAG_UNWINDER) in handle_BUG()
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/linux-6.8/tools/perf/util/
Ddwarf-aux.h1 /* SPDX-License-Identifier: GPL-2.0-or-later */
5 * dwarf-aux.h : libdw auxiliary interfaces
32 /* Get the lowest PC in DIE (including range list) */
47 /* Get callsite line number of inline-function instance */
81 /* Search a non-inlined function including given address */
85 /* Search a non-inlined function with tail call at given address */
136 int die_get_scopes(Dwarf_Die *cu_die, Dwarf_Addr pc, Dwarf_Die **scopes);
144 Dwarf_Die *die_find_variable_by_reg(Dwarf_Die *sc_die, Dwarf_Addr pc, int reg,
148 Dwarf_Die *die_find_variable_by_addr(Dwarf_Die *sc_die, Dwarf_Addr pc,
158 return -ENOTSUP; in die_get_var_range()
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Ddwarf-aux.c1 // SPDX-License-Identifier: GPL-2.0-or-later
3 * dwarf-aux.c : libdw auxiliary interfaces
11 #include "dwarf-aux.h"
16 * cu_find_realpath - Find the realpath of the target file
47 * cu_get_comp_dir - Get the path of compilation directory
76 l = 0; u = nlines - 1; in cu_getsrc_die()
78 n = u - (u - l) / 2; in cu_getsrc_die()
83 u = n - 1; in cu_getsrc_die()
89 line = dwarf_onesrcline(lines, --l); in cu_getsrc_die()
108 * cu_find_lineinfo - Get a line number and file name for given address
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/linux-6.8/arch/arm/boot/compressed/
Dhead.S1 /* SPDX-License-Identifier: GPL-2.0-only */
5 * Copyright (C) 1996-2002 Russell King
12 #include "efi-header.S"
20 AR_CLASS( .arch armv7-a )
21 M_CLASS( .arch armv7-m )
101 kputc #'-'
105 kputc #'-'
110 kputc #'-'
154 * in little-endian form.
209 AR_CLASS( sub pc, pc, #3 ) @ A/R: switch to Thumb2 mode
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/linux-6.8/fs/udf/
Dsymlink.c1 // SPDX-License-Identifier: GPL-2.0-only
6 * Symlink handling routines for the OSTA-UDF(tm) filesystem.
9 * (C) 1998-2001 Ben Fennema
31 struct pathComponent *pc; in udf_pc_to_char() local
37 tolen--; in udf_pc_to_char()
39 pc = (struct pathComponent *)(from + elen); in udf_pc_to_char()
41 switch (pc->componentType) { in udf_pc_to_char()
47 if (pc->lengthComponentIdent > 0) { in udf_pc_to_char()
48 elen += pc->lengthComponentIdent; in udf_pc_to_char()
54 return -ENAMETOOLONG; in udf_pc_to_char()
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/linux-6.8/arch/m68k/kernel/
Dhead.S1 /* SPDX-License-Identifier: GPL-2.0-or-later
2 ** -*- mode: asm -*-
4 ** head.S -- This file contains the initial boot code for the
20 ** ++ Bjoern & Roman: ATARI-68040 support for the Medusa
23 ** Magnum- and FX-alternate ram
26 ** for linux-2.1.115
49 * 1) Remove register dependency through-out the file.
57 * write-ups on the structure of the file, and the features of the
61 * ------------------
70 * actual per-machine specific code very simple.
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/linux-6.8/tools/include/uapi/linux/
Dperf_event.h1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
5 * Copyright (C) 2008-2009, Thomas Gleixner <tglx@linutronix.de>
6 * Copyright (C) 2008-2011, Red Hat, Inc., Ingo Molnar
7 * Copyright (C) 2008-2011, Red Hat, Inc., Peter Zijlstra
13 * For licencing details see kernel-base/COPYING
23 * User-space ABI bits:
37 PERF_TYPE_MAX, /* non-ABI */
75 PERF_COUNT_HW_MAX, /* non-ABI */
81 * { L1-D, L1-I, LLC, ITLB, DTLB, BPU, NODE } x
94 PERF_COUNT_HW_CACHE_MAX, /* non-ABI */
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/linux-6.8/include/uapi/linux/
Dperf_event.h1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
5 * Copyright (C) 2008-2009, Thomas Gleixner <tglx@linutronix.de>
6 * Copyright (C) 2008-2011, Red Hat, Inc., Ingo Molnar
7 * Copyright (C) 2008-2011, Red Hat, Inc., Peter Zijlstra
13 * For licencing details see kernel-base/COPYING
23 * User-space ABI bits:
37 PERF_TYPE_MAX, /* non-ABI */
75 PERF_COUNT_HW_MAX, /* non-ABI */
81 * { L1-D, L1-I, LLC, ITLB, DTLB, BPU, NODE } x
94 PERF_COUNT_HW_CACHE_MAX, /* non-ABI */
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/linux-6.8/arch/m68k/ifpsp060/src/
Dftest.S3 M68000 Hi-Performance Microprocessor Division
5 Production Release P1.00 -- October 10, 1994
30 set SREGS, -64
31 set IREGS, -128
32 set IFPREGS, -224
33 set SFPREGS, -320
34 set IFPCREGS, -332
35 set SFPCREGS, -344
36 set ICCR, -346
37 set SCCR, -348
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/linux-6.8/arch/arm64/kernel/
Dstacktrace.c1 // SPDX-License-Identifier: GPL-2.0-only
43 unwind_init_common(&state->common); in kunwind_init()
44 state->task = task; in kunwind_init()
50 * The unwind will begin at the PC within the regs.
60 state->common.fp = regs->regs[29]; in kunwind_init_from_regs()
61 state->common.pc = regs->pc; in kunwind_init_from_regs()
77 state->common.fp = (unsigned long)__builtin_frame_address(1); in kunwind_init_from_caller()
78 state->common.pc = (unsigned long)__builtin_return_address(0); in kunwind_init_from_caller()
84 * The unwind will begin at the blocked tasks saved PC (i.e. the caller of
97 state->common.fp = thread_saved_fp(task); in kunwind_init_from_task()
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/linux-6.8/arch/arm/nwfpe/
Dentry.S1 /* SPDX-License-Identifier: GPL-2.0-or-later */
24 strb r8, [r10, #TSK_USED_MATH] @ set current->used_math
27 ldr pc, [r4] @ Call FP emulator entry point
56 until it encounters a non floating point instruction, at which time it
64 #include <asm/asm-offsets.h>
68 mov r4, lr @ save the failure-return addresses
71 ldr r5, [sp, #S_PC] @ get contents of PC;
89 @ increment PC
97 str r5, [sp, #S_PC] @ update PC copy in regs
118 @ Check whether the instruction is a co-processor instruction.
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/linux-6.8/arch/powerpc/platforms/
DKconfig.cputype1 # SPDX-License-Identifier: GPL-2.0
7 bool "64-bit kernel"
10 This option selects whether a 32-bit or a 64-bit kernel
282 default "-mtune=power10" if $(cc-option,-mtune=power10)
283 default "-mtune=power9" if $(cc-option,-mtune=power9)
284 default "-mtune=power8" if $(cc-option,-mtune=power8)
366 This option enables kernel support for larger than 32-bit physical
371 is platform-dependent.
387 any affect on a non-altivec cpu (it does, however add code to the
403 VSX (P7 and above), but does not have any affect on a non-VSX
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/linux-6.8/arch/arm/kernel/
Dentry-armv.S1 /* SPDX-License-Identifier: GPL-2.0-only */
3 * linux/arch/arm/kernel/entry-armv.S
6 * ARM700 fix by Matthew Godbolt (linux-user@willothewisp.demon.co.uk)
9 * Low-level vector interface routines
19 #include <asm/glue-df.h>
20 #include <asm/glue-pf.h>
27 #include <asm/uaccess-asm.h>
29 #include "entry-header.S"
74 @ Call the processor-specific abort handler:
76 @ r2 - pt_regs
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/linux-6.8/arch/arm64/boot/dts/rockchip/
Drk3399-roc-pc-mezzanine.dts1 // SPDX-License-Identifier: (GPL-2.0+ OR MIT)
3 * Copyright (c) 2017 T-Chip Intelligent Technology Co., Ltd
7 /dts-v1/;
8 #include "rk3399-roc-pc.dtsi"
11 model = "Firefly ROC-RK3399-PC Mezzanine Board";
12 compatible = "firefly,roc-rk3399-pc-mezzanine", "rockchip,rk3399";
19 poe_12v: poe-12v {
20 compatible = "regulator-fixed";
21 regulator-name = "poe_12v";
22 regulator-always-on;
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/linux-6.8/arch/m68k/ifpsp060/
DCHANGES3 M68000 Hi-Performance Microprocessor Division
5 Production Release P1.00 -- October 10, 1994
31 ---------------------------
42 mode was pre-decrement or post-increment and the address register
49 ---------
56 -------
66 ----
70 ------
71 Upon receiving a non-zero (failing) return value from
72 a {i,d}mem_{read,write}_{byte,word,long}() "call-out",
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/linux-6.8/include/linux/
Dposix-clock.h1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * posix-clock.h - support for dynamic clock devices
13 #include <linux/posix-timers.h>
20 * struct posix_clock_operations - functional interface to the clock
42 int (*clock_adjtime)(struct posix_clock *pc, struct __kernel_timex *tx);
44 int (*clock_gettime)(struct posix_clock *pc, struct timespec64 *ts);
46 int (*clock_getres) (struct posix_clock *pc, struct timespec64 *ts);
48 int (*clock_settime)(struct posix_clock *pc,
69 * struct posix_clock - represents a dynamic posix clock
95 * struct posix_clock_context - represents clock file operations context
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/linux-6.8/arch/sparc/kernel/
Dentry.h1 /* SPDX-License-Identifier: GPL-2.0 */
15 void do_illegal_instruction(struct pt_regs *regs, unsigned long pc,
18 void do_priv_instruction(struct pt_regs *regs, unsigned long pc,
20 void do_memaccess_unaligned(struct pt_regs *regs, unsigned long pc,
22 void do_fpd_trap(struct pt_regs *regs, unsigned long pc,
24 void do_fpe_trap(struct pt_regs *regs, unsigned long pc,
26 void handle_tag_overflow(struct pt_regs *regs, unsigned long pc,
28 void handle_watchpoint(struct pt_regs *regs, unsigned long pc,
30 void handle_reg_access(struct pt_regs *regs, unsigned long pc,
32 void handle_cp_disabled(struct pt_regs *regs, unsigned long pc,
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/linux-6.8/arch/m68k/fpsp040/
Dx_fline.S4 | fpsp_fline --- FPSP handler for fline exception
8 | Next, determine if the instruction is an fmovecr with a non-zero
10 | must be a real F-line exception.
34 | check for unimplemented vector first. Use EXC_VEC-4 because
38 cmpw #UNIMP_VEC,EXC_VEC-4(%a7)
42 | fmovecr with non-zero <ea> handling here
44 subl #4,%a7 |4 accounts for 2-word difference
47 link %a6,#-LOCAL_SIZE
48 fsave -(%a7)
49 moveml %d0-%d1/%a0-%a1,USER_DA(%a6)
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