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| author |  Mike Rapoport (IBM) <rppt@kernel.org>
| 2024-05-05 19:06:19 +0300 |
|---|---|---|
| committer |  Luis Chamberlain <mcgrof@kernel.org>
| 2024-05-14 00:31:43 -0700 |
| commit | f6bec26c0a7364d3506a3e12dab7c228ef32bd65 (patch) | |
| tree | 4686bc944b0452c523664ad70241e3f0a115d12b /arch/loongarch | |
| parent | mm: introduce execmem_alloc() and execmem_free() (diff) | |
| download | linux-f6bec26c0a7364d3506a3e12dab7c228ef32bd65.tar.gz linux-f6bec26c0a7364d3506a3e12dab7c228ef32bd65.tar.bz2 linux-f6bec26c0a7364d3506a3e12dab7c228ef32bd65.zip | |
mm/execmem, arch: convert simple overrides of module_alloc to execmem
Several architectures override module_alloc() only to define address
range for code allocations different than VMALLOC address space.
Provide a generic implementation in execmem that uses the parameters for
address space ranges, required alignment and page protections provided
by architectures.
The architectures must fill execmem_info structure and implement
execmem_arch_setup() that returns a pointer to that structure. This way the
execmem initialization won't be called from every architecture, but rather
from a central place, namely a core_initcall() in execmem.
The execmem provides execmem_alloc() API that wraps __vmalloc_node_range()
with the parameters defined by the architectures. If an architecture does
not implement execmem_arch_setup(), execmem_alloc() will fall back to
module_alloc().
Signed-off-by: Mike Rapoport (IBM) <rppt@kernel.org>
Acked-by: Song Liu <song@kernel.org>
Reviewed-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
Diffstat (limited to 'arch/loongarch')
| -rw-r--r-- | arch/loongarch/kernel/module.c | 19 |
1 files changed, 16 insertions, 3 deletions
diff --git a/arch/loongarch/kernel/module.c b/arch/loongarch/kernel/module.c index c7d0338d12c1..ca6dd7ea1610 100644 --- a/arch/loongarch/kernel/module.c +++ b/arch/loongarch/kernel/module.c @@ -18,6 +18,7 @@ #include <linux/ftrace.h> #include <linux/string.h> #include <linux/kernel.h> +#include <linux/execmem.h> #include <asm/alternative.h> #include <asm/inst.h> #include <asm/unwind.h> @@ -490,10 +491,22 @@ int apply_relocate_add(Elf_Shdr *sechdrs, const char *strtab, return 0; } -void *module_alloc(unsigned long size) +static struct execmem_info execmem_info __ro_after_init; + +struct execmem_info __init *execmem_arch_setup(void) { - return __vmalloc_node_range(size, 1, MODULES_VADDR, MODULES_END, - GFP_KERNEL, PAGE_KERNEL, 0, NUMA_NO_NODE, __builtin_return_address(0)); + execmem_info = (struct execmem_info){ + .ranges = { + [EXECMEM_DEFAULT] = { + .start = MODULES_VADDR, + .end = MODULES_END, + .pgprot = PAGE_KERNEL, + .alignment = 1, + }, + }, + }; + + return &execmem_info; } static void module_init_ftrace_plt(const Elf_Ehdr *hdr, |