Contributors: 17
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Benjamin Herrenschmidt |
263 |
41.68% |
2 |
7.41% |
| Christophe Leroy |
148 |
23.45% |
4 |
14.81% |
| Anton Blanchard |
108 |
17.12% |
5 |
18.52% |
| Michael Ellerman |
26 |
4.12% |
2 |
7.41% |
| Nicholas Piggin |
20 |
3.17% |
1 |
3.70% |
| Sergey Senozhatsky |
15 |
2.38% |
1 |
3.70% |
| Jordan Niethe |
11 |
1.74% |
1 |
3.70% |
| Kumar Gala |
11 |
1.74% |
2 |
7.41% |
| Naveen N. Rao |
9 |
1.43% |
1 |
3.70% |
| Rusty Russell |
5 |
0.79% |
1 |
3.70% |
| Michal Suchanek |
4 |
0.63% |
1 |
3.70% |
| Emil Medve |
3 |
0.48% |
1 |
3.70% |
| Jeremy Fitzhardinge |
3 |
0.48% |
1 |
3.70% |
| Thomas Gleixner |
2 |
0.32% |
1 |
3.70% |
| Daniel Axtens |
1 |
0.16% |
1 |
3.70% |
| Robert Jennings |
1 |
0.16% |
1 |
3.70% |
| Linus Torvalds |
1 |
0.16% |
1 |
3.70% |
| Total |
631 |
|
27 |
|
// SPDX-License-Identifier: GPL-2.0-or-later
/* Kernel module help for powerpc.
Copyright (C) 2001, 2003 Rusty Russell IBM Corporation.
Copyright (C) 2008 Freescale Semiconductor, Inc.
*/
#include <linux/elf.h>
#include <linux/moduleloader.h>
#include <linux/err.h>
#include <linux/vmalloc.h>
#include <linux/mm.h>
#include <linux/bug.h>
#include <asm/module.h>
#include <linux/uaccess.h>
#include <asm/firmware.h>
#include <linux/sort.h>
#include <asm/setup.h>
#include <asm/sections.h>
static LIST_HEAD(module_bug_list);
static const Elf_Shdr *find_section(const Elf_Ehdr *hdr,
const Elf_Shdr *sechdrs,
const char *name)
{
char *secstrings;
unsigned int i;
secstrings = (char *)hdr + sechdrs[hdr->e_shstrndx].sh_offset;
for (i = 1; i < hdr->e_shnum; i++)
if (strcmp(secstrings+sechdrs[i].sh_name, name) == 0)
return &sechdrs[i];
return NULL;
}
int module_finalize(const Elf_Ehdr *hdr,
const Elf_Shdr *sechdrs, struct module *me)
{
const Elf_Shdr *sect;
int rc;
rc = module_finalize_ftrace(me, sechdrs);
if (rc)
return rc;
/* Apply feature fixups */
sect = find_section(hdr, sechdrs, "__ftr_fixup");
if (sect != NULL)
do_feature_fixups(cur_cpu_spec->cpu_features,
(void *)sect->sh_addr,
(void *)sect->sh_addr + sect->sh_size);
sect = find_section(hdr, sechdrs, "__mmu_ftr_fixup");
if (sect != NULL)
do_feature_fixups(cur_cpu_spec->mmu_features,
(void *)sect->sh_addr,
(void *)sect->sh_addr + sect->sh_size);
#ifdef CONFIG_PPC64
sect = find_section(hdr, sechdrs, "__fw_ftr_fixup");
if (sect != NULL)
do_feature_fixups(powerpc_firmware_features,
(void *)sect->sh_addr,
(void *)sect->sh_addr + sect->sh_size);
#endif /* CONFIG_PPC64 */
#ifdef CONFIG_PPC64_ELF_ABI_V1
sect = find_section(hdr, sechdrs, ".opd");
if (sect != NULL) {
me->arch.start_opd = sect->sh_addr;
me->arch.end_opd = sect->sh_addr + sect->sh_size;
}
#endif /* CONFIG_PPC64_ELF_ABI_V1 */
#ifdef CONFIG_PPC_BARRIER_NOSPEC
sect = find_section(hdr, sechdrs, "__spec_barrier_fixup");
if (sect != NULL)
do_barrier_nospec_fixups_range(barrier_nospec_enabled,
(void *)sect->sh_addr,
(void *)sect->sh_addr + sect->sh_size);
#endif /* CONFIG_PPC_BARRIER_NOSPEC */
sect = find_section(hdr, sechdrs, "__lwsync_fixup");
if (sect != NULL)
do_lwsync_fixups(cur_cpu_spec->cpu_features,
(void *)sect->sh_addr,
(void *)sect->sh_addr + sect->sh_size);
return 0;
}
static __always_inline void *
__module_alloc(unsigned long size, unsigned long start, unsigned long end, bool nowarn)
{
pgprot_t prot = strict_module_rwx_enabled() ? PAGE_KERNEL : PAGE_KERNEL_EXEC;
gfp_t gfp = GFP_KERNEL | (nowarn ? __GFP_NOWARN : 0);
/*
* Don't do huge page allocations for modules yet until more testing
* is done. STRICT_MODULE_RWX may require extra work to support this
* too.
*/
return __vmalloc_node_range(size, 1, start, end, gfp, prot,
VM_FLUSH_RESET_PERMS,
NUMA_NO_NODE, __builtin_return_address(0));
}
void *module_alloc(unsigned long size)
{
#ifdef MODULES_VADDR
unsigned long limit = (unsigned long)_etext - SZ_32M;
void *ptr = NULL;
BUILD_BUG_ON(TASK_SIZE > MODULES_VADDR);
/* First try within 32M limit from _etext to avoid branch trampolines */
if (MODULES_VADDR < PAGE_OFFSET && MODULES_END > limit)
ptr = __module_alloc(size, limit, MODULES_END, true);
if (!ptr)
ptr = __module_alloc(size, MODULES_VADDR, MODULES_END, false);
return ptr;
#else
return __module_alloc(size, VMALLOC_START, VMALLOC_END, false);
#endif
}