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From: David Hildenbrand <david@redhat.com>
To: linux-kernel@vger.kernel.org
Cc: David Hildenbrand <david@redhat.com>,
Andrew Morton <akpm@linux-foundation.org>,
Mike Rapoport <rppt@kernel.org>, Michal Hocko <mhocko@suse.com>,
Oscar Salvador <osalvador@suse.de>,
Jianyong Wu <Jianyong.Wu@arm.com>,
"Aneesh Kumar K . V" <aneesh.kumar@linux.ibm.com>,
Vineet Gupta <vgupta@kernel.org>,
Geert Uytterhoeven <geert@linux-m68k.org>,
Huacai Chen <chenhuacai@kernel.org>,
Jiaxun Yang <jiaxun.yang@flygoat.com>,
Thomas Bogendoerfer <tsbogend@alpha.franken.de>,
Heiko Carstens <hca@linux.ibm.com>,
Vasily Gorbik <gor@linux.ibm.com>,
Christian Borntraeger <borntraeger@de.ibm.com>,
Eric Biederman <ebiederm@xmission.com>,
Arnd Bergmann <arnd@arndb.de>,
linux-snps-arc@lists.infradead.org, linux-ia64@vger.kernel.org,
linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org,
linux-s390@vger.kernel.org, linux-mm@kvack.org,
kexec@lists.infradead.org
Subject: [PATCH v1 4/4] mm/memory_hotplug: indicate MEMBLOCK_DRIVER_MANAGED with IORESOURCE_SYSRAM_DRIVER_MANAGED
Date: Mon, 27 Sep 2021 17:05:18 +0200 [thread overview]
Message-ID: <20210927150518.8607-5-david@redhat.com> (raw)
In-Reply-To: <20210927150518.8607-1-david@redhat.com>
Let's communicate driver-managed regions to memblock, to properly
teach kexec_file with CONFIG_ARCH_KEEP_MEMBLOCK to not place images on
these memory regions.
Signed-off-by: David Hildenbrand <david@redhat.com>
---
mm/memory_hotplug.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/mm/memory_hotplug.c b/mm/memory_hotplug.c
index 5f873e7f5b29..6d90818d4ce8 100644
--- a/mm/memory_hotplug.c
+++ b/mm/memory_hotplug.c
@@ -1357,6 +1357,7 @@ bool mhp_supports_memmap_on_memory(unsigned long size)
int __ref add_memory_resource(int nid, struct resource *res, mhp_t mhp_flags)
{
struct mhp_params params = { .pgprot = pgprot_mhp(PAGE_KERNEL) };
+ enum memblock_flags memblock_flags = MEMBLOCK_NONE;
struct vmem_altmap mhp_altmap = {};
struct memory_group *group = NULL;
u64 start, size;
@@ -1385,7 +1386,9 @@ int __ref add_memory_resource(int nid, struct resource *res, mhp_t mhp_flags)
mem_hotplug_begin();
if (IS_ENABLED(CONFIG_ARCH_KEEP_MEMBLOCK)) {
- ret = memblock_add_node(start, size, nid, MEMBLOCK_NONE);
+ if (res->flags & IORESOURCE_SYSRAM_DRIVER_MANAGED)
+ memblock_flags = MEMBLOCK_DRIVER_MANAGED;
+ ret = memblock_add_node(start, size, nid, memblock_flags);
if (ret)
goto error_mem_hotplug_end;
}
--
2.31.1
next prev parent reply other threads:[~2021-09-27 15:06 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-09-27 15:05 [PATCH v1 0/4] mm/memory_hotplug: full support for David Hildenbrand
2021-09-27 15:05 ` [PATCH v1 1/4] mm/memory_hotplug: handle memblock_add_node() failures in add_memory_resource() David Hildenbrand
2021-09-27 15:05 ` [PATCH v1 2/4] memblock: allow to specify flags with memblock_add_node() David Hildenbrand
2021-09-27 15:19 ` Geert Uytterhoeven
2021-09-28 9:38 ` Heiko Carstens
2021-09-29 16:25 ` Mike Rapoport
2021-09-29 16:30 ` David Hildenbrand
2021-09-27 15:05 ` [PATCH v1 3/4] memblock: add MEMBLOCK_DRIVER_MANAGED to mimic IORESOURCE_SYSRAM_DRIVER_MANAGED David Hildenbrand
2021-09-29 16:39 ` Mike Rapoport
2021-09-29 16:54 ` David Hildenbrand
2021-09-30 21:21 ` Mike Rapoport
2021-10-01 8:04 ` David Hildenbrand
2021-10-01 14:03 ` Mike Rapoport
2021-09-27 15:05 ` David Hildenbrand [this message]
2021-09-27 15:07 ` [PATCH v1 0/4] mm/memory_hotplug: full support for David Hildenbrand
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