From: Martin Fernandez <martin.fernandez@eclypsium.com>
To: linux-kernel@vger.kernel.org, linux-efi@vger.kernel.org,
platform-driver-x86@vger.kernel.org, linux-mm@kvack.org
Cc: tglx@linutronix.de, mingo@redhat.com, bp@alien8.de,
dave.hansen@linux.intel.com, x86@kernel.org, hpa@zytor.com,
ardb@kernel.org, dvhart@infradead.org, andy@infradead.org,
gregkh@linuxfoundation.org, rafael@kernel.org, rppt@kernel.org,
akpm@linux-foundation.org, daniel.gutson@eclypsium.com,
hughsient@gmail.com, alex.bazhaniuk@eclypsium.com,
alison.schofield@intel.com,
Martin Fernandez <martin.fernandez@eclypsium.com>
Subject: [PATCH v3 2/5] mm/mmzone: Tag pg_data_t with crypto capabilities
Date: Fri, 3 Dec 2021 16:21:45 -0300 [thread overview]
Message-ID: <20211203192148.585399-3-martin.fernandez@eclypsium.com> (raw)
In-Reply-To: <20211203192148.585399-1-martin.fernandez@eclypsium.com>
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
next prev parent reply other threads:[~2021-12-03 19:23 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-12-03 19:21 [PATCH v3 0/5] x86: Show in sysfs if a memory node is able to do encryption Martin Fernandez
2021-12-03 19:21 ` [PATCH v3 1/5] mm/memblock: Tag memblocks with crypto capabilities Martin Fernandez
2021-12-03 19:21 ` Martin Fernandez [this message]
2021-12-03 19:21 ` [PATCH v3 3/5] Tag e820_entry " Martin Fernandez
2021-12-04 8:21 ` Greg KH
2021-12-04 16:05 ` Mike Rapoport
2021-12-03 19:21 ` [PATCH v3 4/5] x86/efi: Tag e820_entries as crypto capable from EFI memmap Martin Fernandez
2021-12-03 19:21 ` [PATCH v3 5/5] drivers/node: Show in sysfs node's crypto capabilities Martin Fernandez
2021-12-04 8:22 ` Greg KH
2021-12-04 16:35 ` Martin Fernandez
2021-12-04 17:22 ` Greg KH
2021-12-04 18:03 ` Martin Fernandez
2021-12-05 6:04 ` [PATCH v3 0/5] x86: Show in sysfs if a memory node is able to do encryption Mike Rapoport
2021-12-06 19:58 ` Richard Hughes
2021-12-07 7:25 ` Mike Rapoport
2021-12-07 19:45 ` Martin Fernandez
2021-12-07 19:52 ` Dave Hansen
2021-12-07 20:06 ` Mike Rapoport
2021-12-07 20:13 ` Dave Hansen
2021-12-08 14:05 ` Richard Hughes
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