4.19-stable patches

added patches:
	mm-memory_hotplug-use-unsigned-long-for-pfn-in-zone_for_pfn_range.patch

diff --git a/queue-4.19/mm-memory_hotplug-use-unsigned-long-for-pfn-in-zone_for_pfn_range.patch b/queue-4.19/mm-memory_hotplug-use-unsigned-long-for-pfn-in-zone_for_pfn_range.patch
new file mode 100644 (file)
index 0000000..83572b8
--- /dev/null
+++ b/queue-4.19/mm-memory_hotplug-use-unsigned-long-for-pfn-in-zone_for_pfn_range.patch
@@ -0,0 +1,125 @@
+From 7cf209ba8a86410939a24cb1aeb279479a7e0ca6 Mon Sep 17 00:00:00 2001
+From: David Hildenbrand <david@redhat.com>
+Date: Tue, 7 Sep 2021 19:54:59 -0700
+Subject: mm/memory_hotplug: use "unsigned long" for PFN in zone_for_pfn_range()
+
+From: David Hildenbrand <david@redhat.com>
+
+commit 7cf209ba8a86410939a24cb1aeb279479a7e0ca6 upstream.
+
+Patch series "mm/memory_hotplug: preparatory patches for new online policy and memory"
+
+These are all cleanups and one fix previously sent as part of [1]:
+[PATCH v1 00/12] mm/memory_hotplug: "auto-movable" online policy and memory
+groups.
+
+These patches make sense even without the other series, therefore I pulled
+them out to make the other series easier to digest.
+
+[1] https://lkml.kernel.org/r/20210607195430.48228-1-david@redhat.com
+
+This patch (of 4):
+
+Checkpatch complained on a follow-up patch that we are using "unsigned"
+here, which defaults to "unsigned int" and checkpatch is correct.
+
+As we will search for a fitting zone using the wrong pfn, we might end
+up onlining memory to one of the special kernel zones, such as ZONE_DMA,
+which can end badly as the onlined memory does not satisfy properties of
+these zones.
+
+Use "unsigned long" instead, just as we do in other places when handling
+PFNs.  This can bite us once we have physical addresses in the range of
+multiple TB.
+
+Link: https://lkml.kernel.org/r/20210712124052.26491-2-david@redhat.com
+Fixes: e5e689302633 ("mm, memory_hotplug: display allowed zones in the preferred ordering")
+Signed-off-by: David Hildenbrand <david@redhat.com>
+Reviewed-by: Pankaj Gupta <pankaj.gupta@ionos.com>
+Reviewed-by: Muchun Song <songmuchun@bytedance.com>
+Reviewed-by: Oscar Salvador <osalvador@suse.de>
+Cc: David Hildenbrand <david@redhat.com>
+Cc: Vitaly Kuznetsov <vkuznets@redhat.com>
+Cc: "Michael S. Tsirkin" <mst@redhat.com>
+Cc: Jason Wang <jasowang@redhat.com>
+Cc: Pankaj Gupta <pankaj.gupta.linux@gmail.com>
+Cc: Wei Yang <richard.weiyang@linux.alibaba.com>
+Cc: Michal Hocko <mhocko@kernel.org>
+Cc: Dan Williams <dan.j.williams@intel.com>
+Cc: Anshuman Khandual <anshuman.khandual@arm.com>
+Cc: Dave Hansen <dave.hansen@linux.intel.com>
+Cc: Vlastimil Babka <vbabka@suse.cz>
+Cc: Mike Rapoport <rppt@kernel.org>
+Cc: "Rafael J. Wysocki" <rjw@rjwysocki.net>
+Cc: Len Brown <lenb@kernel.org>
+Cc: Pavel Tatashin <pasha.tatashin@soleen.com>
+Cc: Heiko Carstens <hca@linux.ibm.com>
+Cc: Michael Ellerman <mpe@ellerman.id.au>
+Cc: Catalin Marinas <catalin.marinas@arm.com>
+Cc: virtualization@lists.linux-foundation.org
+Cc: Andy Lutomirski <luto@kernel.org>
+Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.ibm.com>
+Cc: Anton Blanchard <anton@ozlabs.org>
+Cc: Ard Biesheuvel <ardb@kernel.org>
+Cc: Baoquan He <bhe@redhat.com>
+Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
+Cc: Borislav Petkov <bp@alien8.de>
+Cc: Christian Borntraeger <borntraeger@de.ibm.com>
+Cc: Christophe Leroy <christophe.leroy@c-s.fr>
+Cc: Dave Jiang <dave.jiang@intel.com>
+Cc: "H. Peter Anvin" <hpa@zytor.com>
+Cc: Ingo Molnar <mingo@redhat.com>
+Cc: Jia He <justin.he@arm.com>
+Cc: Joe Perches <joe@perches.com>
+Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
+Cc: Laurent Dufour <ldufour@linux.ibm.com>
+Cc: Michel Lespinasse <michel@lespinasse.org>
+Cc: Nathan Lynch <nathanl@linux.ibm.com>
+Cc: Nicholas Piggin <npiggin@gmail.com>
+Cc: Paul Mackerras <paulus@samba.org>
+Cc: Peter Zijlstra <peterz@infradead.org>
+Cc: Pierre Morel <pmorel@linux.ibm.com>
+Cc: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
+Cc: Rich Felker <dalias@libc.org>
+Cc: Scott Cheloha <cheloha@linux.ibm.com>
+Cc: Sergei Trofimovich <slyfox@gentoo.org>
+Cc: Thiago Jung Bauermann <bauerman@linux.ibm.com>
+Cc: Thomas Gleixner <tglx@linutronix.de>
+Cc: Vasily Gorbik <gor@linux.ibm.com>
+Cc: Vishal Verma <vishal.l.verma@intel.com>
+Cc: Will Deacon <will@kernel.org>
+Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
+Cc: <stable@vger.kernel.org>
+Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
+Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
+Signed-off-by: David Hildenbrand <david@redhat.com>
+Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
+---
+ include/linux/memory_hotplug.h |    4 ++--
+ mm/memory_hotplug.c            |    4 ++--
+ 2 files changed, 4 insertions(+), 4 deletions(-)
+
+--- a/include/linux/memory_hotplug.h
++++ b/include/linux/memory_hotplug.h
+@@ -344,6 +344,6 @@ extern struct page *sparse_decode_mem_ma
+                                         unsigned long pnum);
+ extern bool allow_online_pfn_range(int nid, unsigned long pfn, unsigned long nr_pages,
+               int online_type);
+-extern struct zone *zone_for_pfn_range(int online_type, int nid, unsigned start_pfn,
+-              unsigned long nr_pages);
++extern struct zone *zone_for_pfn_range(int online_type, int nid,
++              unsigned long start_pfn, unsigned long nr_pages);
+ #endif /* __LINUX_MEMORY_HOTPLUG_H */
+--- a/mm/memory_hotplug.c
++++ b/mm/memory_hotplug.c
+@@ -783,8 +783,8 @@ static inline struct zone *default_zone_
+       return movable_node_enabled ? movable_zone : kernel_zone;
+ }
+ 
+-struct zone * zone_for_pfn_range(int online_type, int nid, unsigned start_pfn,
+-              unsigned long nr_pages)
++struct zone *zone_for_pfn_range(int online_type, int nid,
++              unsigned long start_pfn, unsigned long nr_pages)
+ {
+       if (online_type == MMOP_ONLINE_KERNEL)
+               return default_kernel_zone_for_pfn(nid, start_pfn, nr_pages);

diff --git a/queue-4.19/series b/queue-4.19/series
index b4ad1c516c60e349751075da2b60e7916792f563..fff0f211b68c269979327b86ef3245efff4a8916 100644 (file)
--- a/queue-4.19/series
+++ b/queue-4.19/series
@@ -270,3 +270,4 @@ tcp-fix-tp-undo_retrans-accounting-in-tcp_sacktag_one.patch
 qed-handle-management-fw-error.patch
 ibmvnic-check-failover_pending-in-login-response.patch
 net-hns3-pad-the-short-tunnel-frame-before-sending-to-hardware.patch
+mm-memory_hotplug-use-unsigned-long-for-pfn-in-zone_for_pfn_range.patch