Ything-RepoMirrors/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-01-24 23:16:46 +00:00
Code Issues Packages Projects Releases Wiki Activity

execmem: introduce execmem_alloc_rw()

Browse Source 
Some callers of execmem_alloc() require the memory to be temporarily
writable even when it is allocated from ROX cache.  These callers use
execemem_make_temp_rw() right after the call to execmem_alloc().

Wrap this sequence in execmem_alloc_rw() API.

Link: https://lkml.kernel.org/r/20250713071730.4117334-3-rppt@kernel.org
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Reviewed-by: Daniel Gomez <da.gomez@samsung.com>
Reviewed-by: Petr Pavlu <petr.pavlu@suse.com>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Cc: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Cc: Steven Rostedt (Google) <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
This commit is contained in:
Mike Rapoport (Microsoft)
2025-07-13 10:17:24 +03:00
committed by Andrew Morton
parent fcd90ad31e
commit 838955f64a
4 changed files with 51 additions and 30 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
kernel/module/main.c
View File

@@ -1292,20 +1292,11 @@ static int module_memory_alloc(struct module *mod, enum mod_mem_type type)
else
execmem_type = EXECMEM_MODULE_TEXT;
ptr = execmem_alloc(execmem_type, size);
ptr = execmem_alloc_rw(execmem_type, size);
if (!ptr)
return -ENOMEM;
if (execmem_is_rox(execmem_type)) {
int err = execmem_make_temp_rw(ptr, size);
if (err) {
execmem_free(ptr);
return -ENOMEM;
}
mod->mem[type].is_rox = true;
}
mod->mem[type].is_rox = execmem_is_rox(execmem_type);
/*
* The pointer to these blocks of memory are stored on the module