From: Oscar Salvador <osalvador@suse.de>
To: akpm@linux-foundation.org
Cc: david@redhat.com, mhocko@kernel.org,
linux-kernel@vger.kernel.org, linux-mm@kvack.org, vbabka@suse.cz,
pasha.tatashin@soleen.com, Oscar Salvador <osalvador@suse.de>
Subject: [PATCH 3/5] acpi,memhotplug: Enable MHP_MEMMAP_ON_MEMORY when supported
Date: Thu, 17 Dec 2020 14:07:56 +0100 [thread overview]
Message-ID: <20201217130758.11565-4-osalvador@suse.de> (raw)
In-Reply-To: <20201217130758.11565-1-osalvador@suse.de>
Let the caller check whether it can pass MHP_MEMMAP_ON_MEMORY by
checking mhp_supports_memmap_on_memory().
MHP_MEMMAP_ON_MEMORY can only be set in case
ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE is enabled, the architecture supports
altmap, and the range to be added spans a single memory block.
Signed-off-by: Oscar Salvador <osalvador@suse.de>
---
drivers/acpi/acpi_memhotplug.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/drivers/acpi/acpi_memhotplug.c b/drivers/acpi/acpi_memhotplug.c
index b02fd51e5589..8cc195c4c861 100644
--- a/drivers/acpi/acpi_memhotplug.c
+++ b/drivers/acpi/acpi_memhotplug.c
@@ -171,6 +171,7 @@ static int acpi_memory_enable_device(struct acpi_memory_device *mem_device)
acpi_handle handle = mem_device->device->handle;
int result, num_enabled = 0;
struct acpi_memory_info *info;
+ mhp_t mhp_flags = MHP_NONE;
int node;
node = acpi_get_node(handle);
@@ -194,8 +195,10 @@ static int acpi_memory_enable_device(struct acpi_memory_device *mem_device)
if (node < 0)
node = memory_add_physaddr_to_nid(info->start_addr);
+ if (mhp_supports_memmap_on_memory(info->length))
+ mhp_flags |= MHP_MEMMAP_ON_MEMORY;
result = __add_memory(node, info->start_addr, info->length,
- MHP_NONE);
+ mhp_flags);
/*
* If the memory block has been used by the kernel, add_memory()
--
2.26.2
next prev parent reply other threads:[~2020-12-17 13:09 UTC|newest]
Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-12-17 13:07 [PATCH 0/5] Allocate memmap from hotadded memory (per device) Oscar Salvador
2020-12-17 13:07 ` [PATCH 1/5] mm: Introduce ARCH_MHP_MEMMAP_ON_MEMORY_ENABLE Oscar Salvador
2021-01-11 16:52 ` David Hildenbrand
2021-01-12 7:26 ` Oscar Salvador
2021-01-12 10:12 ` David Hildenbrand
2021-01-12 11:17 ` Oscar Salvador
2021-01-12 11:17 ` David Hildenbrand
2020-12-17 13:07 ` [PATCH 2/5] mm,memory_hotplug: Allocate memmap from the added memory range Oscar Salvador
2021-01-18 10:11 ` Oscar Salvador
2021-01-19 13:58 ` David Hildenbrand
2021-01-25 10:39 ` Oscar Salvador
2021-01-25 10:56 ` Oscar Salvador
2021-01-25 11:02 ` David Hildenbrand
2021-01-25 13:36 ` Oscar Salvador
2021-01-25 10:57 ` David Hildenbrand
2021-01-25 11:18 ` Oscar Salvador
2021-01-25 11:23 ` David Hildenbrand
2020-12-17 13:07 ` Oscar Salvador [this message]
2021-01-11 16:53 ` [PATCH 3/5] acpi,memhotplug: Enable MHP_MEMMAP_ON_MEMORY when supported David Hildenbrand
2020-12-17 13:07 ` [PATCH 4/5] powerpc/memhotplug: " Oscar Salvador
2021-01-11 16:55 ` David Hildenbrand
2021-01-12 13:31 ` Oscar Salvador
2020-12-17 13:07 ` [PATCH 5/5] mm,memory_hotplug: Add kernel boot option to enable memmap_on_memory Oscar Salvador
2021-01-11 9:05 ` [PATCH 0/5] Allocate memmap from hotadded memory (per device) Oscar Salvador
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