Messages in this thread Patch in this message | | | From | Martin Fernandez <> | Subject | [PATCH v4 2/5] mm/mmzone: Tag pg_data_t with crypto capabilities | Date | Thu, 16 Dec 2021 16:22:19 -0300 |
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Add a new member in the pg_data_t struct tell whether the node corresponding to that pg_data_t is able to do hardware memory encryption.
This will be read from sysfs.
Signed-off-by: Martin Fernandez <martin.fernandez@eclypsium.com> --- include/linux/mmzone.h | 3 +++ mm/page_alloc.c | 1 + 2 files changed, 4 insertions(+)
diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h index 58e744b78c2c..1e4f76a19c62 100644 --- a/include/linux/mmzone.h +++ b/include/linux/mmzone.h @@ -870,6 +870,9 @@ typedef struct pglist_data { struct task_struct *kcompactd; bool proactive_compact_trigger; #endif + + bool crypto_capable; + /* * This is a per-node reserve of pages that are not available * to userspace allocations. diff --git a/mm/page_alloc.c b/mm/page_alloc.c index c5952749ad40..8bcbd6fa0089 100644 --- a/mm/page_alloc.c +++ b/mm/page_alloc.c @@ -7592,6 +7592,7 @@ static void __init free_area_init_node(int nid) pgdat->node_id = nid; pgdat->node_start_pfn = start_pfn; pgdat->per_cpu_nodestats = NULL; + pgdat->crypto_capable = memblock_node_is_crypto_capable(nid); pr_info("Initmem setup node %d [mem %#018Lx-%#018Lx]\n", nid, (u64)start_pfn << PAGE_SHIFT, -- 2.30.2
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