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Linux/arch/arm64/kernel/vmlinux.lds.S

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Diff markup

Differences between /arch/arm64/kernel/vmlinux.lds.S (Version linux-6.12-rc7) and /arch/alpha/kernel/vmlinux.lds.S (Version linux-6.2.16)


  1 /* SPDX-License-Identifier: GPL-2.0 */              1 /* SPDX-License-Identifier: GPL-2.0 */
  2 /*                                             << 
  3  * ld script to make ARM Linux kernel          << 
  4  * taken from the i386 version by Russell King << 
  5  * Written by Martin Mares <mj@atrey.karlin.mff << 
  6  */                                            << 
  7                                                << 
  8 #include <asm/hyp_image.h>                     << 
  9 #ifdef CONFIG_KVM                              << 
 10 #define HYPERVISOR_EXTABLE                     << 
 11         . = ALIGN(SZ_8);                       << 
 12         __start___kvm_ex_table = .;            << 
 13         *(__kvm_ex_table)                      << 
 14         __stop___kvm_ex_table = .;             << 
 15                                                << 
 16 #define HYPERVISOR_DATA_SECTIONS               << 
 17         HYP_SECTION_NAME(.rodata) : {          << 
 18                 . = ALIGN(PAGE_SIZE);          << 
 19                 __hyp_rodata_start = .;        << 
 20                 *(HYP_SECTION_NAME(.data..ro_a << 
 21                 *(HYP_SECTION_NAME(.rodata))   << 
 22                 . = ALIGN(PAGE_SIZE);          << 
 23                 __hyp_rodata_end = .;          << 
 24         }                                      << 
 25                                                << 
 26 #define HYPERVISOR_PERCPU_SECTION              << 
 27         . = ALIGN(PAGE_SIZE);                  << 
 28         HYP_SECTION_NAME(.data..percpu) : {    << 
 29                 *(HYP_SECTION_NAME(.data..perc << 
 30         }                                      << 
 31                                                << 
 32 #define HYPERVISOR_RELOC_SECTION               << 
 33         .hyp.reloc : ALIGN(4) {                << 
 34                 __hyp_reloc_begin = .;         << 
 35                 *(.hyp.reloc)                  << 
 36                 __hyp_reloc_end = .;           << 
 37         }                                      << 
 38                                                     2 
 39 #define BSS_FIRST_SECTIONS                     !!   3 #define EMITS_PT_NOTE
 40         __hyp_bss_start = .;                   !!   4 #define RO_EXCEPTION_TABLE_ALIGN        16
 41         *(HYP_SECTION_NAME(.bss))              << 
 42         . = ALIGN(PAGE_SIZE);                  << 
 43         __hyp_bss_end = .;                     << 
 44                                                << 
 45 /*                                             << 
 46  * We require that __hyp_bss_start and __bss_s << 
 47  * with an assertion. But the BSS_SECTION macr << 
 48  * between them, which can in some cases cause << 
 49  * work around the issue, force a page alignme << 
 50  */                                            << 
 51 #define SBSS_ALIGN                      PAGE_S << 
 52 #else /* CONFIG_KVM */                         << 
 53 #define HYPERVISOR_EXTABLE                     << 
 54 #define HYPERVISOR_DATA_SECTIONS               << 
 55 #define HYPERVISOR_PERCPU_SECTION              << 
 56 #define HYPERVISOR_RELOC_SECTION               << 
 57 #define SBSS_ALIGN                      0      << 
 58 #endif                                         << 
 59                                                << 
 60 #define RO_EXCEPTION_TABLE_ALIGN        4      << 
 61 #define RUNTIME_DISCARD_EXIT                   << 
 62                                                     5 
 63 #include <asm-generic/vmlinux.lds.h>                6 #include <asm-generic/vmlinux.lds.h>
                                                   >>   7 #include <asm/thread_info.h>
 64 #include <asm/cache.h>                              8 #include <asm/cache.h>
 65 #include <asm/kernel-pgtable.h>                << 
 66 #include <asm/kexec.h>                         << 
 67 #include <asm/memory.h>                        << 
 68 #include <asm/page.h>                               9 #include <asm/page.h>
                                                   >>  10 #include <asm/setup.h>
 69                                                    11 
 70 #include "image.h"                             !!  12 OUTPUT_FORMAT("elf64-alpha")
 71                                                !!  13 OUTPUT_ARCH(alpha)
 72 OUTPUT_ARCH(aarch64)                           !!  14 ENTRY(__start)
 73 ENTRY(_text)                                   !!  15 PHDRS { text PT_LOAD; note PT_NOTE; }
 74                                                << 
 75 jiffies = jiffies_64;                              16 jiffies = jiffies_64;
 76                                                << 
 77 #define HYPERVISOR_TEXT                        << 
 78         . = ALIGN(PAGE_SIZE);                  << 
 79         __hyp_idmap_text_start = .;            << 
 80         *(.hyp.idmap.text)                     << 
 81         __hyp_idmap_text_end = .;              << 
 82         __hyp_text_start = .;                  << 
 83         *(.hyp.text)                           << 
 84         HYPERVISOR_EXTABLE                     << 
 85         . = ALIGN(PAGE_SIZE);                  << 
 86         __hyp_text_end = .;                    << 
 87                                                << 
 88 #define IDMAP_TEXT                             << 
 89         . = ALIGN(SZ_4K);                      << 
 90         __idmap_text_start = .;                << 
 91         *(.idmap.text)                         << 
 92         __idmap_text_end = .;                  << 
 93                                                << 
 94 #ifdef CONFIG_HIBERNATION                      << 
 95 #define HIBERNATE_TEXT                         << 
 96         ALIGN_FUNCTION();                      << 
 97         __hibernate_exit_text_start = .;       << 
 98         *(.hibernate_exit.text)                << 
 99         __hibernate_exit_text_end = .;         << 
100 #else                                          << 
101 #define HIBERNATE_TEXT                         << 
102 #endif                                         << 
103                                                << 
104 #ifdef CONFIG_KEXEC_CORE                       << 
105 #define KEXEC_TEXT                             << 
106         ALIGN_FUNCTION();                      << 
107         __relocate_new_kernel_start = .;       << 
108         *(.kexec_relocate.text)                << 
109         __relocate_new_kernel_end = .;         << 
110 #else                                          << 
111 #define KEXEC_TEXT                             << 
112 #endif                                         << 
113                                                << 
114 #ifdef CONFIG_UNMAP_KERNEL_AT_EL0              << 
115 #define TRAMP_TEXT                             << 
116         . = ALIGN(PAGE_SIZE);                  << 
117         __entry_tramp_text_start = .;          << 
118         *(.entry.tramp.text)                   << 
119         . = ALIGN(PAGE_SIZE);                  << 
120         __entry_tramp_text_end = .;            << 
121         *(.entry.tramp.rodata)                 << 
122 #else                                          << 
123 #define TRAMP_TEXT                             << 
124 #endif                                         << 
125                                                << 
126 #ifdef CONFIG_UNWIND_TABLES                    << 
127 #define UNWIND_DATA_SECTIONS                   << 
128         .eh_frame : {                          << 
129                 __pi___eh_frame_start = .;     << 
130                 *(.eh_frame)                   << 
131                 __pi___eh_frame_end = .;       << 
132         }                                      << 
133 #else                                          << 
134 #define UNWIND_DATA_SECTIONS                   << 
135 #endif                                         << 
136                                                << 
137 /*                                             << 
138  * The size of the PE/COFF section that covers << 
139  * runs from _stext to _edata, must be a round << 
140  * FileAlignment, which we set to its minimum  << 
141  * itself is 4 KB aligned, so padding out _eda << 
142  * boundary should be sufficient.              << 
143  */                                            << 
144 PECOFF_FILE_ALIGNMENT = 0x200;                 << 
145                                                << 
146 #ifdef CONFIG_EFI                              << 
147 #define PECOFF_EDATA_PADDING    \              << 
148         .pecoff_edata_padding : { BYTE(0); . = << 
149 #else                                          << 
150 #define PECOFF_EDATA_PADDING                   << 
151 #endif                                         << 
152                                                << 
153 SECTIONS                                           17 SECTIONS
154 {                                                  18 {
155         /*                                     !!  19 #ifdef CONFIG_ALPHA_LEGACY_START_ADDRESS
156          * XXX: The linker does not define how !!  20         . = 0xfffffc0000310000;
157          * assigned to input sections when the !!  21 #else
158          * matching the same input section nam !!  22         . = 0xfffffc0001010000;
159          * order of matching.                  << 
160          */                                    << 
161         DISCARDS                               << 
162         /DISCARD/ : {                          << 
163                 *(.interp .dynamic)            << 
164                 *(.dynsym .dynstr .hash .gnu.h << 
165         }                                      << 
166                                                << 
167         . = KIMAGE_VADDR;                      << 
168                                                << 
169         .head.text : {                         << 
170                 _text = .;                     << 
171                 HEAD_TEXT                      << 
172         }                                      << 
173         .text : ALIGN(SEGMENT_ALIGN) {  /* Rea << 
174                 _stext = .;             /* Tex << 
175                         IRQENTRY_TEXT          << 
176                         SOFTIRQENTRY_TEXT      << 
177                         ENTRY_TEXT             << 
178                         TEXT_TEXT              << 
179                         SCHED_TEXT             << 
180                         LOCK_TEXT              << 
181                         KPROBES_TEXT           << 
182                         HYPERVISOR_TEXT        << 
183                         *(.gnu.warning)        << 
184         }                                      << 
185                                                << 
186         . = ALIGN(SEGMENT_ALIGN);              << 
187         _etext = .;                     /* End << 
188                                                << 
189         /* everything from this point to __ini << 
190         RO_DATA(PAGE_SIZE)                     << 
191                                                << 
192         HYPERVISOR_DATA_SECTIONS               << 
193                                                << 
194         .got : { *(.got) }                     << 
195         /*                                     << 
196          * Make sure that the .got.plt is eith << 
197          * contains only the lazy dispatch ent << 
198          */                                    << 
199         .got.plt : { *(.got.plt) }             << 
200         ASSERT(SIZEOF(.got.plt) == 0 || SIZEOF << 
201                "Unexpected GOT/PLT entries det << 
202                                                << 
203         /* code sections that are never execut << 
204         .rodata.text : {                       << 
205                 TRAMP_TEXT                     << 
206                 HIBERNATE_TEXT                 << 
207                 KEXEC_TEXT                     << 
208                 IDMAP_TEXT                     << 
209                 . = ALIGN(PAGE_SIZE);          << 
210         }                                      << 
211                                                << 
212         idmap_pg_dir = .;                      << 
213         . += PAGE_SIZE;                        << 
214                                                << 
215 #ifdef CONFIG_UNMAP_KERNEL_AT_EL0              << 
216         tramp_pg_dir = .;                      << 
217         . += PAGE_SIZE;                        << 
218 #endif                                             23 #endif
219                                                    24 
220         reserved_pg_dir = .;                   !!  25         _text = .;      /* Text and read-only data */
221         . += PAGE_SIZE;                        !!  26         .text : {
222                                                !!  27                 HEAD_TEXT
223         swapper_pg_dir = .;                    !!  28                 TEXT_TEXT
224         . += PAGE_SIZE;                        !!  29                 SCHED_TEXT
225                                                !!  30                 CPUIDLE_TEXT
226         . = ALIGN(SEGMENT_ALIGN);              !!  31                 LOCK_TEXT
227         __init_begin = .;                      !!  32                 *(.fixup)
228         __inittext_begin = .;                  !!  33                 *(.gnu.warning)
229                                                !!  34         } :text
230         INIT_TEXT_SECTION(8)                   !!  35         swapper_pg_dir = SWAPPER_PGD;
231                                                !!  36         _etext = .;     /* End of text section */
232         __exittext_begin = .;                  !!  37 
233         .exit.text : {                         !!  38         RO_DATA(4096)
234                 EXIT_TEXT                      !!  39 
235         }                                      !!  40         /* Will be freed after init */
236         __exittext_end = .;                    !!  41         __init_begin = ALIGN(PAGE_SIZE);
237                                                !!  42         INIT_TEXT_SECTION(PAGE_SIZE)
238         . = ALIGN(4);                          !!  43         INIT_DATA_SECTION(16)
239         .altinstructions : {                   << 
240                 __alt_instructions = .;        << 
241                 *(.altinstructions)            << 
242                 __alt_instructions_end = .;    << 
243         }                                      << 
244                                                << 
245         UNWIND_DATA_SECTIONS                   << 
246                                                << 
247         . = ALIGN(SEGMENT_ALIGN);              << 
248         __inittext_end = .;                    << 
249         __initdata_begin = .;                  << 
250                                                << 
251         init_idmap_pg_dir = .;                 << 
252         . += INIT_IDMAP_DIR_SIZE;              << 
253         init_idmap_pg_end = .;                 << 
254                                                << 
255         .init.data : {                         << 
256                 INIT_DATA                      << 
257                 INIT_SETUP(16)                 << 
258                 INIT_CALLS                     << 
259                 CON_INITCALL                   << 
260                 INIT_RAM_FS                    << 
261                 *(.init.altinstructions .init. << 
262         }                                      << 
263         .exit.data : {                         << 
264                 EXIT_DATA                      << 
265         }                                      << 
266                                                << 
267         RUNTIME_CONST_VARIABLES                << 
268                                                << 
269         PERCPU_SECTION(L1_CACHE_BYTES)             44         PERCPU_SECTION(L1_CACHE_BYTES)
270         HYPERVISOR_PERCPU_SECTION              !!  45         /* Align to THREAD_SIZE rather than PAGE_SIZE here so any padding page
271                                                !!  46            needed for the THREAD_SIZE aligned init_task gets freed after init */
272         HYPERVISOR_RELOC_SECTION               !!  47         . = ALIGN(THREAD_SIZE);
273                                                << 
274         .rela.dyn : ALIGN(8) {                 << 
275                 __pi_rela_start = .;           << 
276                 *(.rela .rela*)                << 
277                 __pi_rela_end = .;             << 
278         }                                      << 
279                                                << 
280         .relr.dyn : ALIGN(8) {                 << 
281                 __pi_relr_start = .;           << 
282                 *(.relr.dyn)                   << 
283                 __pi_relr_end = .;             << 
284         }                                      << 
285                                                << 
286         . = ALIGN(SEGMENT_ALIGN);              << 
287         __initdata_end = .;                    << 
288         __init_end = .;                            48         __init_end = .;
                                                   >>  49         /* Freed after init ends here */
289                                                    50 
                                                   >>  51         _sdata = .;     /* Start of rw data section */
290         _data = .;                                 52         _data = .;
291         _sdata = .;                            !!  53         RW_DATA(L1_CACHE_BYTES, PAGE_SIZE, THREAD_SIZE)
292         RW_DATA(L1_CACHE_BYTES, PAGE_SIZE, THR << 
293                                                    54 
294         /*                                     !!  55         .got : {
295          * Data written with the MMU off but r !!  56                 *(.got)
296          * cache lines to be invalidated, disc << 
297          * Granule (CWG) of data from the cach << 
298          * requires this type of maintenance t << 
299          * Granule (CWG) area so the cache mai << 
300          * interfere with adjacent data.       << 
301          */                                    << 
302         .mmuoff.data.write : ALIGN(SZ_2K) {    << 
303                 __mmuoff_data_start = .;       << 
304                 *(.mmuoff.data.write)          << 
305         }                                          57         }
306         . = ALIGN(SZ_2K);                      !!  58         .sdata : {
307         .mmuoff.data.read : {                  !!  59                 *(.sdata)
308                 *(.mmuoff.data.read)           << 
309                 __mmuoff_data_end = .;         << 
310         }                                          60         }
                                                   >>  61         _edata = .;     /* End of data section */
311                                                    62 
312         PECOFF_EDATA_PADDING                   !!  63         BSS_SECTION(0, 0, 0)
313         __pecoff_data_rawsize = ABSOLUTE(. - _ << 
314         _edata = .;                            << 
315                                                << 
316         /* start of zero-init region */        << 
317         BSS_SECTION(SBSS_ALIGN, 0, 0)          << 
318                                                << 
319         . = ALIGN(PAGE_SIZE);                  << 
320         init_pg_dir = .;                       << 
321         . += INIT_DIR_SIZE;                    << 
322         init_pg_end = .;                       << 
323         /* end of zero-init region */          << 
324                                                << 
325         . += SZ_4K;             /* stack for t << 
326         early_init_stack = .;                  << 
327                                                << 
328         . = ALIGN(SEGMENT_ALIGN);              << 
329         __pecoff_data_size = ABSOLUTE(. - __in << 
330         _end = .;                                  64         _end = .;
331                                                    65 
                                                   >>  66         .mdebug 0 : {
                                                   >>  67                 *(.mdebug)
                                                   >>  68         }
                                                   >>  69         .note 0 : {
                                                   >>  70                 *(.note)
                                                   >>  71         }
                                                   >>  72 
332         STABS_DEBUG                                73         STABS_DEBUG
333         DWARF_DEBUG                                74         DWARF_DEBUG
334         ELF_DETAILS                                75         ELF_DETAILS
335                                                    76 
336         HEAD_SYMBOLS                           !!  77         DISCARDS
337                                                << 
338         /*                                     << 
339          * Sections that should stay zero size << 
340          * explicitly check instead of blindly << 
341          */                                    << 
342         .plt : {                               << 
343                 *(.plt) *(.plt.*) *(.iplt) *(. << 
344         }                                      << 
345         ASSERT(SIZEOF(.plt) == 0, "Unexpected  << 
346                                                << 
347         .data.rel.ro : { *(.data.rel.ro) }     << 
348         ASSERT(SIZEOF(.data.rel.ro) == 0, "Une << 
349 }                                                  78 }
350                                                << 
351 #include "image-vars.h"                        << 
352                                                << 
353 /*                                             << 
354  * The HYP init code and ID map text can't be  << 
355  * former is page-aligned, but the latter may  << 
356  * it should also not cross a page boundary.   << 
357  */                                            << 
358 ASSERT(__hyp_idmap_text_end - __hyp_idmap_text << 
359         "HYP init code too big")               << 
360 ASSERT(__idmap_text_end - (__idmap_text_start  << 
361         "ID map text too big or misaligned")   << 
362 #ifdef CONFIG_HIBERNATION                      << 
363 ASSERT(__hibernate_exit_text_end - __hibernate << 
364        "Hibernate exit text is bigger than 4 K << 
365 ASSERT(__hibernate_exit_text_start == swsusp_a << 
366        "Hibernate exit text does not start wit << 
367 #endif                                         << 
368 #ifdef CONFIG_UNMAP_KERNEL_AT_EL0              << 
369 ASSERT((__entry_tramp_text_end - __entry_tramp << 
370         "Entry trampoline text too big")       << 
371 #endif                                         << 
372 #ifdef CONFIG_KVM                              << 
373 ASSERT(__hyp_bss_start == __bss_start, "HYP an << 
374 #endif                                         << 
375 /*                                             << 
376  * If padding is applied before .head.text, vi << 
377  */                                            << 
378 ASSERT(_text == KIMAGE_VADDR, "HEAD is misalig << 
379                                                << 
380 ASSERT(swapper_pg_dir - reserved_pg_dir == RES << 
381        "RESERVED_SWAPPER_OFFSET is wrong!")    << 
382                                                << 
383 #ifdef CONFIG_UNMAP_KERNEL_AT_EL0              << 
384 ASSERT(swapper_pg_dir - tramp_pg_dir == TRAMP_ << 
385        "TRAMP_SWAPPER_OFFSET is wrong!")       << 
386 #endif                                         << 
387                                                << 
388 #ifdef CONFIG_KEXEC_CORE                       << 
389 /* kexec relocation code should fit into one K << 
390 ASSERT(__relocate_new_kernel_end - __relocate_ << 
391        "kexec relocation code is bigger than 4 << 
392 ASSERT(KEXEC_CONTROL_PAGE_SIZE >= SZ_4K, "KEXE << 
393 ASSERT(__relocate_new_kernel_start == arm64_re << 
394        "kexec control page does not start with << 
395 #endif                                         << 
                                                      

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