github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-11-07 06:17:02 +01:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph

kexec_file: remove unused arch_kexec_locate_mem_hole hook

Browse Source 
No architecture provides an implementation of
arch_kexec_locate_mem_hole(). Use kexec_locate_mem_hole() directly
and remove the unused fallback wrapper from the kexec header.

This simplifies the kexec memory allocation path without changing
its behavior. No functional changes intended.

The arch hook was introduced by commit f891f19736 ("kexec_file: Allow
archs to handle special regions while locating memory hole"), and its
last user was removed by commit 6e5250eaa6 ("powerpc/crash: use
generic APIs to locate memory hole for kdump").

Cc: Albert Ou <aou@eecs.berkeley.edu>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Mike Rapoport <rppt@kernel.org>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Pasha Tatashin <pasha.tatashin@soleen.com>
Cc: Paul Walmsley <pjw@kernel.org>
Cc: Pratyush Yadav <pratyush@kernel.org>
Cc: linux-riscv@lists.infradead.org
Cc: kexec@lists.infradead.org
Acked-by: Baoquan He <baoquan.he@linux.dev>
Reviewed-by: Mukesh Pilaniya <mpilaniy@redhat.com>
Signed-off-by: Sourabh Jain <sourabhjain@linux.ibm.com>
Link: https://patch.msgid.link/20260905145835.501635-1-sourabhjain@linux.ibm.com
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
This commit is contained in:
Sourabh Jain 2026-09-05 20:28:35 +05:30 committed by Mike Rapoport (Microsoft)
parent c7add4fee3
commit 06ce2863e7
3 changed files with 2 additions and 17 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/riscv/kernel/kexec_elf.c
View File

@ -91,7 +91,7 @@ static int elf_find_pbase(struct kimage *image, unsigned long kernel_len,
kbuf.memsz = ALIGN(kernel_len, PAGE_SIZE);
kbuf.cma = NULL;
kbuf.top_down = false;
ret = arch_kexec_locate_mem_hole(&kbuf);
ret = kexec_locate_mem_hole(&kbuf);
if (!ret) {
*old_pbase = lowest_paddr;
*new_pbase = kbuf.mem;

15
include/linux/kexec.h
View File

@ -259,21 +259,6 @@ int kexec_kernel_verify_pe_sig(const char *kernel, unsigned long kernel_len);
extern int kexec_add_buffer(struct kexec_buf *kbuf);
int kexec_locate_mem_hole(struct kexec_buf *kbuf);
#ifndef arch_kexec_locate_mem_hole
/**
* arch_kexec_locate_mem_hole - Find free memory to place the segments.
* @kbuf: Parameters for the memory search.
*
* On success, kbuf->mem will have the start address of the memory region found.
*
* Return: 0 on success, negative errno on error.
*/
static inline int arch_kexec_locate_mem_hole(struct kexec_buf *kbuf)
{
return kexec_locate_mem_hole(kbuf);
}
#endif
#ifndef arch_kexec_apply_relocations_add
/*
* arch_kexec_apply_relocations_add - apply relocations of type RELA

2
kernel/kexec_file.c
View File

@ -802,7 +802,7 @@ int kexec_add_buffer(struct kexec_buf *kbuf)
kbuf->cma = NULL;
/* Walk the RAM ranges and allocate a suitable range for the buffer */
ret = arch_kexec_locate_mem_hole(kbuf);
ret = kexec_locate_mem_hole(kbuf);
if (ret)
return ret;