[merged mm-nonmm-stable] powerpc-crash-preserve-user-specified-memory-limit.patch removed from -mm tree

[merged mm-nonmm-stable] powerpc-crash-preserve-user-specified-memory-limit.patch removed from -mm tree

[Andrew Morton]

The quilt patch titled
     Subject: powerpc/crash: preserve user-specified memory limit
has been removed from the -mm tree.  Its filename was
     powerpc-crash-preserve-user-specified-memory-limit.patch

This patch was dropped because it was merged into the mm-nonmm-stable branch
of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

------------------------------------------------------
From: Sourabh Jain <sourabhjain@linux.ibm.com>
Subject: powerpc/crash: preserve user-specified memory limit
Date: Fri, 31 Jan 2025 17:08:28 +0530

Commit 59d58189f3d9 ("crash: fix crash memory reserve exceed system memory
bug") fails crashkernel parsing if the crash size is found to be higher
than system RAM, which makes the memory_limit adjustment code ineffective
due to an early exit from reserve_crashkernel().

Regardless lets not violate the user-specified memory limit by adjusting
it.  Remove this adjustment to ensure all reservations stay within the
limit.  Commit f94f5ac07983 ("powerpc/fadump: Don't update the
user-specified memory limit") did the same for fadump.

Link: https://lkml.kernel.org/r/20250131113830.925179-6-sourabhjain@linux.ibm.com
Signed-off-by: Sourabh Jain <sourabhjain@linux.ibm.com>
Reviewed-by: Mahesh Salgaonkar <mahesh@linux.ibm.com>
Acked-by: Hari Bathini <hbathini@linux.ibm.com>
Cc: Baoquan he <bhe@redhat.com>
Cc: Madhavan Srinivasan <maddy@linux.ibm.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 arch/powerpc/kexec/core.c |    8 --------
 1 file changed, 8 deletions(-)

--- a/arch/powerpc/kexec/core.c~powerpc-crash-preserve-user-specified-memory-limit
+++ a/arch/powerpc/kexec/core.c
@@ -128,14 +128,6 @@ void __init reserve_crashkernel(void)
 		return;
 	}
 
-	/* Crash kernel trumps memory limit */
-	if (memory_limit && memory_limit <= crashk_res.end) {
-		memory_limit = crashk_res.end + 1;
-		total_mem_sz = memory_limit;
-		printk("Adjusted memory limit for crashkernel, now 0x%llx\n",
-		       memory_limit);
-	}
-
 	printk(KERN_INFO "Reserving %ldMB of memory at %ldMB "
 			"for crashkernel (System RAM: %ldMB)\n",
 			(unsigned long)(crash_size >> 20),
_

Patches currently in -mm which might be from sourabhjain@linux.ibm.com are