+ x86-crash-add-x86-crash-hotplug-support-fix.patch added to mm-nonmm-unstable branch

+ x86-crash-add-x86-crash-hotplug-support-fix.patch added to mm-nonmm-unstable branch

[Andrew Morton]

The patch titled
     Subject: x86/crash: correct unused function build error
has been added to the -mm mm-nonmm-unstable branch.  Its filename is
     x86-crash-add-x86-crash-hotplug-support-fix.patch

This patch will shortly appear at
     https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/x86-crash-add-x86-crash-hotplug-support-fix.patch

This patch will later appear in the mm-nonmm-unstable branch at
    git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Before you just go and hit "reply", please:
   a) Consider who else should be cc'ed
   b) Prefer to cc a suitable mailing list as well
   c) Ideally: find the original patch on the mailing list and do a
      reply-to-all to that, adding suitable additional cc's

*** Remember to use Documentation/process/submit-checklist.rst when testing your code ***

The -mm tree is included into linux-next via the mm-everything
branch at git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
and is updated there every 2-3 working days

------------------------------------------------------
From: Eric DeVolder <eric.devolder@oracle.com>
Subject: x86/crash: correct unused function build error
Date: Mon, 21 Aug 2023 14:26:44 -0400

In certain config scenarios, an unused-function build error occurs
relating to prepare_elf_headers(). Correct the ifdef guarding these
functions to eliminate the build error.

Link: https://lkml.kernel.org/r/20230821182644.2143-1-eric.devolder@oracle.com
Signed-off-by: Eric DeVolder <eric.devolder@oracle.com>
Suggested-by: Baoquan He <bhe@redhat.com>
Tested-by: Paul E. McKenney <paulmck@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 arch/x86/kernel/crash.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/arch/x86/kernel/crash.c~x86-crash-add-x86-crash-hotplug-support-fix
+++ a/arch/x86/kernel/crash.c
@@ -158,7 +158,7 @@ void native_machine_crash_shutdown(struc
 	crash_save_cpu(regs, safe_smp_processor_id());
 }
 
-#if defined(CONFIG_KEXEC_FILE) || defined(CONFIG_CRASH_DUMP)
+#if defined(CONFIG_KEXEC_FILE) || defined(CONFIG_CRASH_HOTPLUG)
 static int get_nr_ram_ranges_callback(struct resource *res, void *arg)
 {
 	unsigned int *nr_ranges = arg;
_

Patches currently in -mm which might be from eric.devolder@oracle.com are

crash-move-a-few-code-bits-to-setup-support-of-crash-hotplug.patch
crash-add-generic-infrastructure-for-crash-hotplug-support.patch
kexec-exclude-elfcorehdr-from-the-segment-digest.patch
crash-memory-and-cpu-hotplug-sysfs-attributes.patch
x86-crash-add-x86-crash-hotplug-support.patch
x86-crash-add-x86-crash-hotplug-support-fix.patch
crash-hotplug-support-for-kexec_load.patch
crash-change-crash_prepare_elf64_headers-to-for_each_possible_cpu.patch
x86-crash-optimize-cpu-changes.patch